Answered: a. What is the value of the critical…

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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We want to estimate the percentage of all college students that like the food in their cafeteria. How many students must we survey if we want to be 90% confident that the sample percentage is within

four

percentage points of the true population percentage?

a. What is the value of the critical value?

z Subscript alpha divided by 2 Baseline equals

nothing

b. What is the desired margin of error? E =

nothing

(enter a decimal with 2 decimal places)

c. What is the sample size? n =

nothing

(enter a whole number)

d. Does the size of the population affect the sample size?

No,

the population size, does not appear in the formula.

Yes, the bigger the population, the bigger the sample size.

No, the sample size is only affected by the margin of error.

Yes, the sample size must be 90% of the population size.

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