Assume that a simple random sample has been selected from a normally distributed population and test...

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Statistics

Assume that a simple random sample has been selected from anormally distributed population and test the given claim. Identifythe null and alternative​ hypotheses, test​ statistic, P-value, andstate the final conclusion that addresses the original claim.

A coin mint has a specification that a particular coin has amean weight of 2.5 g. A sample of 33 coins was collected. Thosecoins have a mean weight of 2.49554 g and a standard deviation of0.01347 g. Use a 0.05 significance level to test the claim thatthis sample is from a population with a mean weight equal to 2.5 g.Do the coins appear to conform to the specifications of the coin​mint?

Identify the test statistic.

t=?

​(Round to three decimal places as​ needed.)

Identify the​ P-value.

The​ P-value is ?.

​(Round to four decimal places as​ needed.)

State the final conclusion that addresses the original claim.Choose the correct answer below.

A. Fail to reject Upper H 0. There is sufficient evidence towarrant rejection of the claim that the sample is from a populationwith a mean weight equal to 2.5 g.

B. Reject Upper H 0. There is sufficient evidence to warrantrejection of the claim that the sample is from a population with amean weight equal to 2.5 g.

C. Fail to reject Upper H 0. There is insufficient evidence towarrant rejection of the claim that the sample is from a populationwith a mean weight equal to 2.5 g.

D. Reject Upper H 0. There is insufficient evidence to warrantrejection of the claim that the sample is from a population with amean weight equal to 2.5 g.

Do the coins appear to conform to the specifications of thecoin​ mint?

A. No, since the coins seem to come from a population with amean weight different from 2.49554 g.

B. Yes, since the coins do not seem to come from a populationwith a mean weight different from 2.5 g.

C. Yes, since the coins do not seem to come from a populationwith a mean weight different from 2.49554 g.

D. No, since the coins seem to come from a population with amean weight different from 2.5g.

E. The results are inconclusive because individual differencesin coin weights need to be analyzed further.

Answer & Explanation Solved by verified expert
4.3 Ratings (683 Votes)
Given 25 249554 s 001347 n 33 005TheHypothesisH0 25Ha 25This is a 2 tailed testThe TestStatistic Since the population    See Answer
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