A coin mint has a specification that a particular coin has a mean weight of 2.5 g. A sample of 39 coins was collected. Those coins have a mean weight of 2.49491 g and a standard deviation of 0.01372 g. Use a 0.05 significance level to test the claim that this sample is from a population with a mean weight equal to 2.5 g. Do coins appear to conform to the specifications of the coin mint?

asked by slomomo

9 years ago

1,318 views

0

0

1 answer

Z = (score-mean)/SEm

SEm = SD/√n

Use Z table, as indicated in previous posts.

answered by PsyDAG

0

0

Ask a New Question or answer this question.

Question

A coin mint has a specification that a particular coin has a mean weight of 2.5 g. A sample of 39 coins was collected. Those coins have a mean weight of 2.49491 g and a standard deviation of 0.01372 g. Use a 0.05 significance level to test the claim that this sample is from a population with a mean weight equal to 2.5 g. Do coins appear to conform to the specifications of the coin mint?

1 answer

Z = (score-mean)/SEm

SEm = SD/√n

Use Z table, as indicated in previous posts.

PsyDAG · Answer

Z = (score-mean)/SEm SEm = SD/√n Use Z table, as indicated in previous posts.