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3 years ago

11

Erica knits 18 squares on monday. She knits 7 more squares each day for the rest of the week . how many squares does Erica have

on friday?

1 answer:

egoroff_w [7]3 years ago

4 0

Monday 18 + Tuesday +7 Wednesday +7 Thursday +7 Friday +7 = 46

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The confidence interval is:

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In this problem, we have a 80% confidence level, hence $\alpha = 0.8$ , z is the value of Z that has a p-value of $\frac{1+0.8}{2} = 0.9$ , so the critical value is z = 1.28.

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Then the bounds of the interval are:

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Hence the interval is:

$46.6 \leq \mu \leq 48$

More can be learned about the z-distribution at brainly.com/question/25890103

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