If the sample size n increases from 35 to 50 what happens to the width of the confidence interval? a) The width of the confidence interval decreases.
b) Nothing. The change in the sample size has no effect on the width of the interval.
c) The width of the confidence interval increases.

Ànswer

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c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.