Verizon 8:42 PM * 38% . Now suppose that you get 36% \"No\" answers in a randomi
ID: 3319088 • Letter: V
Question
Verizon 8:42 PM * 38% . Now suppose that you get 36% "No" answers in a randomized-response poll of a large sample of students at your college. What do you estimate to be the percent of the population who have plagiarized a paper? 11 1 points MintoStat9 5.E 524.30P My NotesAsk Your Sheila's doctor is concerned that she may suffer from gestational diabetes (high blood glucose levels during pregnancy). There is variation both in the actual glucose level and in the blood test that measures the level. A patient is classified as having gestational diabetes if the glucose level is above 140 milligrams per deciliter (mg/dl) one hour after a sugary drink is ingested. Sheilas measured glucose level one hour after ingesting the sugary drink varies according to the Normal distribution with . 127 mg/dl and 10 mg/dl. (a) If a single glucose measurement is made, what is the probability that Sheila is diagnosed as having gestational diabetes? (Round your answer to four decimall places.) (b) If measurements are made instead on 3 separate days and the mean result is compared with the criterion 140 mg/dl what is the probability that Sheila is diagnosed as having gestational diabetes? (Round your answer to four decimal places.) 12 11 points MintsoStat9 5.E 526.XP Here is a simple probability model for multiple-choice tests. Suppose that each student has probability p of correctly answering a question chosen at random from a universe of possible questions.(A strong student has a higher P than a weak student.) The correctness of answers to different questions are independent. Jodi is a good student for whom p-0.77 (a) Use the Normal approximation to find the probability that Jodi scores 73% or lower on a 100-question test. (Round your answer to four decimal places (b) If the test contains 250 questions, what is the probability that Jodi will score 73% or lower? (Use the normal approximation. Round your answer to four decimal places.) (c) How many questions must the test contain in order to reduce the standard deviation of Jodis proportion of correct answers to half its value for a 100-item test? questions (d) Laura is a weaker student for whom -0.72. Does the answer you gave in (c) for standard deviation of Jodi's score apply to Laura's standard deviation also? Yes, the smaller for Laura has no effect on the relationship between the number of questions and the standard deviation O No, the smaller p for Laura alters the relationship between the number of questions and the standard deviation. eflook -1 points MintroStat9 5.E.004 My Notes Ask YourExplanation / Answer
Question 11
= 127 mg/dl
= 10 mg/dl
(A) If a single measurment is taken
Pr(X > 140 ; 127; 10) = 1 - Pr(X < 140 ; 127; 10) = 1 - (Z)
Z = (140 - 127)/10 = 1.3
Pr(X > 140 ; 127; 10) =1 - (1.3) where is standard cumulative normal distribution
Pr(X > 140 ; 127; 10) =1 - 0.9032 = 0.0968
(B) If there are three measurements
standard error of sample mean = s/sqrt (3) = 10/ sqrt (3) = 5.7735
Pr(x > 140 ; 127; 5.7735) = 1 - (Z)
z = (140 - 127)/ 5.7735 = 2.2517
Pr(x > 140 ; 127; 5.7735) = 1 - (2.2517) = 1 - 0.9878 = 0.0112
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.