A jeweler is planning on manufacturing gold chains. His design calls for a chain to contain 0.08 ounce of gold. The jeweler wants to know if the chains he makes contain, on average, 0.08 ounce of gold. To determine whether the chains contain 0.08 ounce of gold, he takes a random sample of 15 chains and obtains the following data: 0.0773 0.0779 0.0756 0.0792 0.0777

0.0818 0.0802 0.0802 0.0785 0.0764

0.0786 0.0776 0.0793 0.0755 0.0806

The data has a standard deviation of 0.00178. Find p-value for the jeweler.

a. p = 0.0232

b. p = 1.507

c. p = 1.682

d. p = 0.232

In the previous question do the values fall within an accepted range and why?

Customers are used to evaluate preliminary product designs. in the past, 93% of highly successful products received good reviews, 51% of moderately successful products received good reviews, and 14% of poor products received good reviews. in addition, 40% of products have been highly successful, 35% have been moderately successful and 25% have been poor products. round your answers to four decimal places (e.g. 98.) what is the probability that a product attains a good review? (b) if a new design attains a good review, what is the probability that it will be a highly successful product? (c) if a product does not attain a good review, what is the probability that it will be a highly successful product?