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. (1.71, 2.05)

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. (3.144, 3.176)

Q: Determine the minimum sample size n needed to estimate m for the

Determine the minimum sample size n needed to estimate m for the values of c, σ, and E. c = 0.90, σ = 6.8, E = 1

Q: For the same sample statistics, which level of confidence would produce

For the same sample statistics, which level of confidence would produce the widest confidence interval? Explain your reasoning. a. 90% b. 95% c. 98% d. 99%

Q: Determine the minimum sample size n needed to estimate m for the

Determine the minimum sample size n needed to estimate m for the values of c, σ, and E. c = 0.95, σ = 2.5, E = 1

Q: Determine the minimum sample size n needed to estimate m for the

Determine the minimum sample size n needed to estimate m for the values of c, σ, and E. c = 0.80, σ = 4.1, E = 2

Q: Determine the minimum sample size n needed to estimate m for the

Determine the minimum sample size n needed to estimate m for the values of c, σ, and E. c = 0.98, σ = 10.1, E = 2

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 estimated margin of error.

Use the confidence interval to find the estimated margin of error. Then find the sample mean. A government agency reports a confidence interval of (26.2, 30.1) when estimating the mean commute time (i...

Q: Use the confidence interval to find the estimated margin of error.

Use the confidence interval to find the estimated margin of error. Then find the sample mean. A store manager reports a confidence interval of (244.07, 280.97) when estimating the mean price (in dolla...