# Question: A computer company that recently developed a new software product

A computer company that recently developed a new software product wanted to estimate the mean time taken to learn how to use this software by people who are somewhat familiar with computers. A random sample of 12 such persons was selected. The following data give the times taken (in hours) by these persons to learn how to use this software.

Construct a 95% confidence interval for the population mean. Assume that the times taken by all persons who are somewhat familiar with computers to learn how to use this software are approximately normally distributed.

Construct a 95% confidence interval for the population mean. Assume that the times taken by all persons who are somewhat familiar with computers to learn how to use this software are approximately normally distributed.

## Relevant Questions

A company that produces 8-ounce low-fat yogurt cups wanted to estimate the mean number of calories for such cups. A random sample of 10 such cups produced the following numbers of calories. Construct a 99% confidence ...Salaried workers at a large corporation receive 2 weeks’ paid vacation per year. Sixteen randomly selected workers from this corporation were asked whether or not they would be willing to take a 3% reduction in their ...For a data set obtained from a sample, n = 81 and . It is known that σ = 4.8. a. What is the point estimate of µ? b. Make a 95% confidence interval for µ. c. What is the margin of error of estimate for part b? Calculating a confidence interval for the proportion requires a minimum sample size. Calculate a confidence interval, using any confidence level of 90% or higher, for the population proportion for each of the following. a. n ...For a population data set, σ = 14.50. a. What should the sample size be for a 98% confidence interval for µ to have a margin of error of estimate equal to 5.50? b. What should the sample size be for a 95% confidence ...Post your question