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1. A random sample of 16 size AA batteries for toys yield a mean of 2.8 hours with standard deviation, 1.3 hours.

(a) Find the critical value, t*, for a 99% CI. t* = ______

(b) Find the margin of error for a 99% CI._____

2.Assume you are using a significance level of ?=0.05 to test the claim that ?<10 and that your sample is a random sample of 34 values. Find ?, the probability of making a type II error (failing to reject a false null hypothesis), given that the population actually has a normal distribution with ?=8 and ?=6.

?=_____.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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