Mathematics problem solving
178175 questions • Page 126 / 3564
1)sin?=-1/2, 180
1)sin?=-1/2, 180<?<270, find tan? 2)cot?=-1,90<?<180, find cos? 3)csc?=v2,p/2<?<p, find cot? 4)sec?=2v3/3,3p/2<?<2p, find sin? 5)sin?=-1/2 and cos?>0, f…
1)testing for the statistical significance of the relationship between the depen
1)testing for the statistical significance of the relationship between the dependent and independent variable in small samples a)does not depend on sample size b)is accomplished b…
1)the distance D in feet that an object has fallen after t seconds is given by D
1)the distance D in feet that an object has fallen after t seconds is given by D(t)=16t^2 a)evaluate D(2) & D(5). b) Calculate slope of the secant line through D(2) and D(5) o…
1)write and test code to generate the squate matrix A for a user specified N whe
1)write and test code to generate the squate matrix A for a user specified N where 1 2 3 ..............N 2 3 4 ..............N+1 A=3 4 5 ..............N+2 ... …
1)write and test code to generate the squate matrix A for a user specified N whe
1)write and test code to generate the squate matrix A for a user specified N where 1 2 3 ..............N 2 3 4 ..............N+1 A= 3 4 5 ..............N+2 .…
1*. A trit is the ternary equivalent of a bit. Count the number of possible stri
1*. A trit is the ternary equivalent of a bit. Count the number of possible string of 10 trits with exactly 4 trits having value 2. 2*. You have some money to spend, it's weekend …
1+sin x +cos x = 1+cos x 1+sin x -cos x sin x I need to make the left side equal
1+sinx+cosx = 1+cosx 1+sinx-cosx sinx I need to make the left side equal the right side. I can onlywork on one side of the equation. You cannot work both sides of theequa…
1, 2 and 3 please. I will post again for #4 We used the example of the Product M
1, 2 and 3 please. I will post again for #4 We used the example of the Product Mix model from the textbook. But mind that some numbers are changed here. PC Tech company assembles …
1, 2,3,4, 5, 6, 7, and 15 for the population mean, using the formula or calculat
1, 2,3,4, 5, 6, 7, and 15 for the population mean, using the formula or calculator. s(Round to two dedimal places as needed.) ônge te number 15 to a Frd a 00% oor toence interval …
1, A. You have a bag of different flavored candies. The probabilities of randoml
1, A. You have a bag of different flavored candies. The probabilities of randomly selecting a particular flavored candy are shown in the table. The probability of selecting an ora…
1, Given the following, calculate the Net Price, and round to the nearest cent.
1, Given the following, calculate the Net Price, and round to the nearest cent. List Price (LP) = $750 Trade Discount Rate (TDR) = 30% 2, Given a List Price of $1,400, and a Chain…
1, Given the following, determine the end of the A) Discount Period, and B) the
1, Given the following, determine the end of the A) Discount Period, and B) the Credit Period: Invoice Date: October 7 Terms: 2/10, n/30 2, Given the following, determine the end …
1, In order for Alice to graduate with her friends she has to take 9 more classe
1, In order for Alice to graduate with her friends she has to take 9 more classes. None of the courses are prerequisites to the others and she is eligible to take all 9 courses. S…
1, Marcella has decided that since she has limited budgetary resocuers available
1, Marcella has decided that since she has limited budgetary resocuers available for reseach, and her population of interest is largelu homogeneous with regard to professional int…
1, Rubisco (RuBP) is regenerated during the Calvin cycle (carbon fixation reacti
1, Rubisco (RuBP) is regenerated during the Calvin cycle (carbon fixation reactions) A, True B, False 2, An imperfect flower has male and female reproductive parts. A, True B, Fal…
1, Suppose that a ramdom variable X has an F distribution with 3and 8 degrees of
1, Suppose that a ramdom variable X has an F distribution with 3and 8 degrees of freedom . Determine the value of c such thatP(X<c)=0.05 2, Suppose that a random variable X has…
1, Suppose that a ramdom variable X has an F distribution with 3and 8 degrees of
1, Suppose that a ramdom variable X has an F distribution with 3and 8 degrees of freedom . Determine the value of c such thatP(X<c)=0.05 2, Suppose that a random variable X has…
1, what is the particular z value so that the middle 98% of the area under the s
1, what is the particular z value so that the middle 98% of the area under the standard normal curve is between - and ? (In other words, find the particular value zo such that P(-…
1,2 In this problem. we explore the effect on the standard deviation of adding t
1,2 In this problem. we explore the effect on the standard deviation of adding the same constant to each data value in a data set. Consider the followring data selt. 17, 11, 10, 1…
1,2 is correct. 3 is wrong. I took x-5 = t to paremeterise. Consider the vector
1,2 is correct. 3 is wrong. I took x-5 = t to paremeterise. Consider the vector field: F(x, y) = (-y,x) Let C be the curve illustrated below, where A = (3,0), B = (5,0) and C = (5…
1,2,3 and 4 please! A small cell phone manufacturing company using a robotic ass
1,2,3 and 4 please! A small cell phone manufacturing company using a robotic assembly line employs 13 people with the following annual salaries: $120,000 President $100,000 Vice p…
1,2,3 and 4 please! At 42 years of age, Enrique Chavez was starting to think mor
1,2,3 and 4 please! At 42 years of age, Enrique Chavez was starting to think more and more about retirement. After 17 years of running one of the hay area's most popular tattoo pa…
1,: A dropped ball accelerates downwards at a constant rate 9.8 meters per secon
1,: A dropped ball accelerates downwards at a constant rate 9.8 meters per second squared. Set up the differential equation for the height above ground h in meters. Then supposing…
1,For the following six questions, you are examining if there is a relationship
1,For the following six questions, you are examining if there is a relationship between a mother's education level and how long she breastfeeds her child. Less than High School Hi…
1- (a) What is the probability of rolling a pair of dice and obtaining a total s
1- (a) What is the probability of rolling a pair of dice and obtaining a total score of 9 or more? (b) What is the probability of rolling a pair of dice and obtaining a total scor…
1- 4. A study was performed to investigate whether hypothyroxinemia in premature
1- 4. A study was performed to investigate whether hypothyroxinemia in premature infants is a cause of subsequent motor and cognitive abnormalities. Blood thyroxine values were ob…
1- 6 subjects were given a drug and an additional 6 subjects a placebo. Their re
1- 6 subjects were given a drug and an additional 6 subjects a placebo. Their reaction time to a stimulus was measured (in ms): placebo: 91, 87, 99, 77, 88, 91; drug: 101, 110, 10…
1- 6 subjects were given a drug and an additional 6 subjects a placebo. Their re
1- 6 subjects were given a drug and an additional 6 subjects a placebo. Their reaction time to a stimulus was measured (in ms): placebo: 91, 87, 99, 77, 88, 91; drug: 101, 110, 10…
1- A 90% confidence interval estimate of the population mean can be interpreted
1- A 90% confidence interval estimate of the population mean can be interpreted to mean that: if we repeatedly draw samples of the same size from the same population, 90% of the v…
1- A box contains m red and n white balls. If 4 balls are drawn at random withou
1- A box contains m red and n white balls. If 4 balls are drawn at random without replacement, what is the probability that 2 of them are red? 2- A box contains m red and n white …
1- A candy maker produces mints that have a label weight of 20.4 grams. Assume t
1- A candy maker produces mints that have a label weight of 20.4 grams. Assume that the distribution of the weights of these mints is N(21.37, 0.16). Suppose that 15 mints are in…
1- A company accountant prepared a report stating that 90% of the company’s empl
1- A company accountant prepared a report stating that 90% of the company’s employees earn less than the mean salary. A company executive insists this is not possible; that the ac…
1- A manufacturing company manufactures T-Shirts. The fixed cost for a year is 8
1- A manufacturing company manufactures T-Shirts. The fixed cost for a year is 8100 SAR. Each T-Shirt carries on average a variable cost of 30 SAR and the selling price of 120 SAR…
1- A manufacturing company manufactures T-Shirts. The fixed cost for a year is 8
1- A manufacturing company manufactures T-Shirts. The fixed cost for a year is 8100 SAR. Each T-Shirt carries on average a variable cost of 30 SAR and the selling price of 120 SAR…
1- A researcher calculated the mean difference between two varieties of corn of
1- A researcher calculated the mean difference between two varieties of corn of 10.3 bu/ac with an upper confidence limit of 12.3 bu/ac and a lower confidence limit of 8.3 bu/ac u…
1- A set of numbers is transformed by taking the log base 10 of each number. The
1- A set of numbers is transformed by taking the log base 10 of each number. The mean of the transformed data is 1.65. What is the geometric mean of the untransformed data? 2-Whic…
1- A study has indicated that the sample size necessary to estimate the average
1- A study has indicated that the sample size necessary to estimate the average electricity use by residential customers of a large western utility company is 900 customers. Assum…
1- A study is conducted to determine whether people learn better with spaced or
1-A study is conducted to determine whether people learn better with spaced or masse practice. Subjects volunteer from an introductory psychology class. At the beginning of the se…
1- A study of malaria transmission in Africa tested whether drinking beer increa
1- A study of malaria transmission in Africa tested whether drinking beer increased attractiveness to mosquitoes. Yes, this is a real story (Lefevre et al. 2010. PLOS One5:e9546),…
1- A test is made of versus . A sample of size is drawn, and . The population st
1- A test is made of versus . A sample of size is drawn, and . The population standard deviation is . Compute the value of the test statistic z and determine if H0 is rejected at …
1- A) Claim: “The proportion of symptom-free placebo subjects is less than the p
1- A) Claim: “The proportion of symptom-free placebo subjects is less than the proportion of symptom-free subjects who received a new supplement.” A medical researcher wants to de…
1- A- Instructions for finding a buried treasure include the following: Go 448.6
1- A- Instructions for finding a buried treasure include the following: Go 448.6 paces at 120 , turn to 156 and walk 254 paces, then travel 491 paces at 232 . Find the magnitude o…
1- A-Multilevel model. B- Reliability analysis. C-Hierarchical multiple regressi
1- A-Multilevel model. B- Reliability analysis. C-Hierarchical multiple regression. D-Factor analysis. 2- A-Stress from teaching. B-Stress from research. C-Stress from providing p…
1- A-Multilevel model. B- Reliability analysis. C-Hierarchical multiple regressi
1- A-Multilevel model. B- Reliability analysis. C-Hierarchical multiple regression. D-Factor analysis. 2- A-Stress from teaching. B-Stress from research. C-Stress from providing p…
1- An engineer is investigating the strength of a new type of fastener. The only
1- An engineer is investigating the strength of a new type of fastener. The only information she has right now is that the strength of a similar fastener has a standard deviation …
1- An equipment manufacturer claims his equipment will produce product with fewe
1- An equipment manufacturer claims his equipment will produce product with fewer defectives than your current equipment. You have been monitoring your process for several months …
1- An experiment is designed to study the effect of calcium and vitamin D supple
1- An experiment is designed to study the effect of calcium and vitamin D supplements on the bones of first-year college students. The outcome measure is the total body bone miner…
1- An experiment is designed to study the effect of calcium and vitamin D supple
1- An experiment is designed to study the effect of calcium and vitamin D supplements on the bones of first-year college students. The outcome measure is the total body bone miner…
1- An object independently treated in an experiment is known as the a-Factor b-L
1- An object independently treated in an experiment is known as the a-Factor b-Level c-Treatment d-Experimental unit 2-As part of an experiment, we conduct a one-way ANOVA and obt…
1- Arbitron Media Research Inc. conducted a study of the iPod listening habits o
1- Arbitron Media Research Inc. conducted a study of the iPod listening habits of men and women. One facet of the study involved the mean listening time. It was discovered that th…
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