Anew study is designed to estimate the average grocery spending. individual records are assumed to be independent normally distributed with the population standard deviation = $32. researchers want to have the margin of error of the 95% confidence interval no bigger than $15. what is the smallest sample size needed? show the following elements of your decision.

critical value
smallest sample size
is the sample size of 25 sufficient for the goals of the study?

CRITICAL VALUE

1.96

SMALLEST SAMPLE SIZE

18

IS THE SAMPLE SIZE OF 25 SUFFICIENT FOR THE GOALS OF THE STUDY?

Yes, it is.

Step-by-step explanation:

The sample size n in Simple Random Sampling is given by

where  

z = 1.96 is the critical value for a 95% confidence level

s = 32 is the population standard deviation

e = 15 is the margin of error

so  

CRITICAL VALUE

1.96

SMALLEST SAMPLE SIZE

18

IS THE SAMPLE SIZE OF 25 SUFFICIENT FOR THE GOALS OF THE STUDY?

Yes, it is.

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.

you forgot the options, but i found them anyways, the correct answer is "john wilson believes that words and actions based on the intellect are superior to those based on emotions".

john wilson is depicted as an extremely intelligent man. the point of the excerpt is to make a sort of distinction between emotional and rational intelligence. he happens to have both attributes, but he clearly favors his intellectual gifts. at the same time, because of his religious background, he's a little bit conflicted with this and it makes him ashamed.

hope this !