Mathematics problem solving

1. A pharmacist is interested in whether or not patient satisfaction is related

1. A pharmacist is interested in whether or not patient satisfaction is related in any way to the way that he dresses. On odd numbered days, he dresses very professional; on even …

1. A pharmacist is interested in whether or not patient satisfaction is related

1. A pharmacist is interested in whether or not patient satisfaction is related in any way to the way that he dresses. On odd numbered days, he dresses very professional; on even …

1. A pharmacist measures baseline blood pressure in patients based on one of fiv

1. A pharmacist measures baseline blood pressure in patients based on one of five ethnic groups that make up the population of her clientele. She then measures their blood pressur…

1. A pharmacist measures baseline blood pressure in patients based on one of fiv

1. A pharmacist measures baseline blood pressure in patients based on one of five ethnic groups that make up the population of her clientele. She then measures their blood pressur…

1. A photocathode has a work function of 2.9 eV. It is illuminated with white li

1. A photocathode has a work function of 2.9 eV. It is illuminated with white light that has a continuous wavelength band from 400 nm to 700 nm. What is the wavelength band, in nm…

1. A picket fence is composed of x pickets, eachof which is 1/2 inch wide. If th

1.   A picket fence is composed of x pickets, eachof which is 1/2 inch wide. If there are six inches of which is 1/2inch wide. If there are six inches of space between each pairof…

1. A pizza company wants to know how undergraduate students at a local universit

1. A pizza company wants to know how undergraduate students at a local university feel about their menu options. An employee hands out surveys to 500 students selected at random o…

1. A pizza parlor has 12 different toppings available for its pizza; and 2 of th

1. A pizza parlor has 12 different toppings available for its pizza; and 2 of these toppings are at random, find the probability pepperoni and anchovies. If a customer picks two t…

1. A planet rotates through one complete revolution every 17 hours. Since the ax

1. A planet rotates through one complete revolution every 17 hours. Since the axis of rotation is perpendicular to the equator, you can think of a person standing on the equator a…

1. A point estimate is typically reported with an interval estimate. Why? Using

1. A point estimate is typically reported with an interval estimate. Why? Using only a point estimate is associated with low certainty. The interval estimate gives researchers a h…

1. A poker hand is a 5-card hand dealt randomly from a deck. (a) How many poker

1. A poker hand is a 5-card hand dealt randomly from a deck. (a) How many poker hands contain exactly three hearts? (b) How many poker hands contain at least two kings? 2. Our Xen…

1. A political party sends a mail survey to 1500 randomly selected registered vo

1. A political party sends a mail survey to 1500 randomly selected registered voters in a community. The survey asks respondents to give an opinion about the job performance of th…

1. A political scientist believes that there is a “gender gap” in American votin

1. A political scientist believes that there is a “gender gap” in American voting with women more likely to vote for the Democratic candidate. She therefore interviews a random sa…

1. A politician makes the following claim in a speech: \"Correlation analysis re

1. A politician makes the following claim in a speech: "Correlation analysis research has clearly shown that a lack of education causes people to turn to a life of drugs." What is…

1. A politician makes the following claim in a speech: \"Correlation analysis re

1. A politician makes the following claim in a speech: "Correlation analysis research has clearly shown that a lack of education causes people to turn to a life of drugs." What is…

1. A poll of 275 adults in the Boston area shows that 157 will watch the Super B

1. A poll of 275 adults in the Boston area shows that 157 will watch the Super Bowl (even if the Patriots are not in it). Use this information to construct a 95% confidence interv…

1. A pollution-control inspector suspected that a riverside community was releas

1. A pollution-control inspector suspected that a riverside community was releasing semi-treated sewage into a river and this, as a consequence, was changing the level of dissolve…

1. A polygraph examiner is judging the guilt or innocence of 280 people charged

1. A polygraph examiner is judging the guilt or innocence of 280 people charged with a crime, 140 of whom are known to be innocent and 140 of whom are known to be guilty (but the …

1. A pond contains 5 red fishes and 3 blue fishes. A fisherman caught 6 fishes.

1. A pond contains 5 red fishes and 3 blue fishes. A fisherman caught 6 fishes. Which is more probable, that the fisherman caught 3 red fish or 4 red fish? 2.  An urn contains two…

1. A popular infomercial wants to know the proportion of viewers that prefer gol

1. A popular infomercial wants to know the proportion of viewers that prefer gold to silver jewelry. Viewers are asked to text "gold" or "silver" to a provided number. Seventy-sev…

1. A population of 600 semiconductor wafers contain wafers from the lots. The wa

1. A population of 600 semiconductor wafers contain wafers from the lots. The wafers are categorized by lot and by whether they conform to a thickness specification. The following…

1. A presidential candidate believes that 58% of the voters are supporting him.

1. A presidential candidate believes that 58% of the voters are supporting him. His opponent believes this estimate is too high. State the appropriate null and alternative hypothe…

1. A priori comparisons are which one of the following? A Are planned in advance

1. A priori comparisons are which one of the following? A Are planned in advance of the research B Often arises our of theory and prior research C May be done without examining th…

1. A production manager has data on three machines A, B, and C that indicates 9

1. A production manager has data on three machines A, B, and C that indicates 9 out of 1000 parts from machine A, 16 out of 2000 parts from machine B, and 15 out of 1500 parts fro…

1. A production process is checked periodically by a quality control inspector.

1. A production process is checked periodically by a quality control inspector. The inspector selects simple random samples of 30 finished products and computes the sample mean pr…

1. A professor believes that 40% of Stat students will get 90% or above, 30% wil

1. A professor believes that 40% of Stat students will get 90% or above, 30% will get between 80% and 89.9%, 30% will get 79.9% or below. Is she right at 0.01 level of significanc…

1. A professor offers his 840 students the option of coming to a review session

1. A professor offers his 840 students the option of coming to a review session the day before the final exam. In order to decide whether the review session actually helps student…

1. A psychologist is interested in measuring the quality of the relationship bet

1. A psychologist is interested in measuring the quality of the relationship between mothers and their 1-year-old infants. They start by gathering 50 hours of video recording of e…

1. A psychologist reported in an empirical study that the 95% CI for the mean of

1. A psychologist reported in an empirical study that the 95% CI for the mean of IQ is [97.1, 101.4]. It implies that the population mean of IQ will fall within [97.1, 101.4] 95% …

1. A psychologist tests whether diet and exercise impact weight loss. They are v

1. A psychologist tests whether diet and exercise impact weight loss. They are very interested in whether the effects dieting depend on exercise. They give four groups (N- 20 per …

1. A public agency is interested in learning more about the residents of retirem

1. A public agency is interested in learning more about the residents of retirement homes in the province of Ontario. A not up-to-date list of 1000 retirement homes in Ontario is …

1. A published report of a repeated-measures research study includes the followi

1. A published report of a repeated-measures research study includes the following             description of the statistical analysis. “The results show significant differences a…

1. A quality control engineer is in charge of testing whether or not 90% of the

1. A quality control engineer is in charge of testing whether or not 90% of the DVD players produced by his company conform to specifications. To do this, the engineer randomly se…

1. A quality control manager thinks that there is a higher defective rate on the

1. A quality control manager thinks that there is a higher defective rate on the production line than the advertised value of p = 0.025. She does a hypothesis test with a signific…

1. A quality control manager thinks that there is a higher defective rate on the

1. A quality control manager thinks that there is a higher defective rate on the production line than the advertised value of p = 0.025. She does a hypothesis test with a signific…

1. A quality control manager wished to estimate the population mean weight of a

1. A quality control manager wished to estimate the population mean weight of a particular type of coffee can. A sample of 144 cans of coffee yielded a sample mean weight of 16 ou…

1. A radiator is turned on, causing the room in which it\'s in to warm up. The t

1. A radiator is turned on, causing the room in which it's in to warm up. The temperature (measured in Celsius) T = T(x,t) at a given point in the room depends on two things: the …

1. A random number generator is used to select a number from 1 to 500 ?(inclusiv

1. A random number generator is used to select a number from 1 to 500 ?(inclusively). What is the probability of selecting the number 595 ? What is the probability? 2.Identify the…

1. A random sample is obtained from a normal population with variance 2 = 625, a

1. A random sample is obtained from a normal population with variance 2 = 625, and the sample mean is computed. Test the null hypothesis H0: = 100 versus the alternative hypothesi…

1. A random sample is selected and a confidence interval is calculated to estima

1. A random sample is selected and a confidence interval is calculated to estimate a parameter. If the confidence level is increased, then the width of the confidence interval wil…

1. A random sample of 15 values of PAR (photosynthetically active radiation) wer

1.              A random sample of 15 values of PAR (photosynthetically active radiation) were taken at noon in a certain forest (in moles per meter2 per second) :                …

1. A random sample of 300 shoppers was selected to estimate the proportion of cu

1. A random sample of 300 shoppers was selected to estimate the proportion of customers satisfied with the floor displays of merchandise throughout the store. What is the maximum …

1. A random sample of 328 medical doctors showed that 171 have a solo practice.

1. A random sample of 328 medical doctors showed that 171 have a solo practice. a. Let P represent the proportion of all medical doctors who have a solo practice. Find a point est…

1. A random sample of 384 people in a mid-sized city (city one) revealed 112 ind

1. A random sample of 384 people in a mid-sized city (city one) revealed 112 individuals who worked at more than one job. A second random sample of 432 workers from another mid-si…

1. A random sample of 4,000 U.S. citizens was asked their opinion concerning gun

1. A random sample of 4,000 U.S. citizens was asked their opinion concerning gun control. A total of 2,600 of the 4,000 citizens in the sample stated that they are in favor of gun…

1. A random sample of 45 door-to-door encyclopedia salespersons were asked how l

1. A random sample of 45 door-to-door encyclopedia salespersons were asked how long on average they were able to talk to the potential customer. Their answers revealed a mean of 8…

1. A random sample of 49 California college students found that the amount of mo

1. A random sample of 49 California college students found that the amount of money they spent annually on textbooks had a mean of $898 with a standard deviation of $265. (a) Make…

1. A random sample of 55 trading days is taken and the volume of a particular st

1. A random sample of 55 trading days is taken and the volume of a particular stock is recorded. A 95% confidence interval for m is calculated to be (35.01, 44.53). Which of the f…

1. A random sample of 64 cell phone users showed that they paid an average of $1

1. A random sample of 64 cell phone users showed that they paid an average of $110 per month with a standard deviation of $12 for their cell phone service. Make a 95% confidence i…

1. A random sample of Sinister residents are examined and their waist sizes are

1. A random sample of Sinister residents are examined and their waist sizes are shown below 38 39 40 37 35 34 36 37 38 39 140 |45 |42 |43 39 37 35 36 36 37 a. Identify the populat…