Questions from Statistics

Q: Use the confidence interval to find the margin of error and the

Use the confidence interval to find the margin of error and the sample mean. (64.6, 83.6)

Q: Find the indicated probabilities using the geometric distribution, the Poisson distribution

Find the indicated probabilities using the geometric distribution, the Poisson distribution, or the binomial distribution. Then determine whether the events are unusual. If convenient, use a table or...

Q: Use the confidence interval to find the margin of error and the

Use the confidence interval to find the margin of error and the sample mean. (16.2, 29.8)

Q: You are given the sample mean and the sample standard deviation.

You are given the sample mean and the sample standard deviation. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 95% confidence int...

Q: You are given the sample mean and the sample standard deviation.

You are given the sample mean and the sample standard deviation. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 95% confidence int...

Q: You are given the sample mean and the sample standard deviation.

You are given the sample mean and the sample standard deviation. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 95% confidence int...

Q: Find the critical value tc for the level of confidence c and

Find the critical value tc for the level of confidence c and sample size n. c = 0.95, n = 12

Q: You are given the sample mean and the sample standard deviation.

You are given the sample mean and the sample standard deviation. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 95% confidence int...

Q: You research commute times to work and find that the population standard

You research commute times to work and find that the population standard deviation is 9.3 minutes. Repeat Exercise 17 using the standard normal distribution with the appropriate calculations for a sta...

Q: You research driving distances to work and find that the population standard

You research driving distances to work and find that the population standard deviation is 5.2 miles. Repeat Exercise 18 using the standard normal distribution with the appropriate calculations for a s...