thLast year over 8000 students took an entrance exam at a certain state university. Amanda's score was at the 66" percentile. John's score was at the 32dpercentile.(If necessary, consult a list of formulas.)(a) Which of the following must be true about Amanda's and John's scores?O Amanda scored higher than John.O Both Amanda and John scored higher than the median.O Amanda got 34 more questions correct than John.O Amanda's and John's scores were both in the bottom half of all scores.(b) Which of the following must be true about Amanda's score?O Amanda scored higher than about 34% of the students who took the exam.O About 34% of the students who took the exam scored higher than Amanda.O Amanda got about 66% of the questions correct.O Amanda got about 66% of the questions wrong.

Answered: Image /qna-images/answer/aba2e381-008b-46ca-a2bf-a30d727ba537.jpg

Answered: (a) Which of the following must be true…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A salesman makes initial telephone contact with potential customers in an effort to assess whether a follow-up visit to their homes is likely to be worthwhile. His experience suggests that 40% of the initial contacts lead to follow-up visits. Suppose he contacts 100 people by telephone and the sample proportion of the follow-up visit is calculated. Which of the following statements is (are) correct? This is a multiple-answer question. It may have more than one correct answers. i. The sample proportion has a normal distribution with a mean of 0.40 and a standard deviation of 04x0.4 = 0.049. 100 Oil. The sample proportion has a normal distribution with a mean of 0.40 and a standard deviation of 0.6. iii. The probability that the sample proportion of the follow-up visit is more than 50% is P(p>0.5) = P(z>04-05)=P(z>-2.04) = 1-0.0207 = 0.9793. iv. The probability that the sample proportion of the follow-up visit is more than 50% is P(p>0.5)=P(2> 05 = P(Z > 2.04) = 1-0.9793= 0.0207.…

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