Question

Asked Nov 8, 2019

Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Use the p value method and fill in the blanks to address the claim.

A manufacturer makes ball bearings that are supposed to have a mean weight of 30g. A retailer suspects that the mean weight is actually less than 30g. The mean weight for a random sample of 16 ball bearings is 29.1g with a standard deviation of 4.4g. At the 0.05 significance level, test the claim that the sample comes from a population with a mean weight less than 30g.

Please answer the following with details and the calculator steps:

Claim: __________________________________

H0 H1

u0 x

Sx n

t p

Since p ___________ a, we _______________ the null hypothesis.

Final statement: _____________________________________________

Step 1

Given data

Hypothesized mean µ= 30

Sample Standard deviation s = 4.4

Sample mean = 29.1

Sample size n = 4.4

Claim - sample comes from a population with a mean weight less than 30g

Formulation of hypothesis

Null Hypothesis∶H_0: μ=30,That is mean weight of ball bearing is 30g

Alternati...

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