Questions from Statistics

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 = 0.98, n = 15

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 = 0.99, n = 30

Q: a. find the margin of error for the values of c

a. find the margin of error for the values of c, s, and n, and b. construct the confidence interval for µ using the t-distribution. Assume the population is normally distributed. c = 0.90, s = 25.6,...

Q: a. find the margin of error for the values of c

a. find the margin of error for the values of c, s, and n, and b. construct the confidence interval for µ using the t-distribution. Assume the population is normally distributed. c = 0.95, s = 1.1, n...

Q: a. find the margin of error for the values of c

a. find the margin of error for the values of c, s, and n, and b. construct the confidence interval for µ using the t-distribution. Assume the population is normally distributed. c = 0.98, s = 0.9, n...

Q: a. find the margin of error for the values of c

a. find the margin of error for the values of c, s, and n, and b. construct the confidence interval for µ using the t-distribution. Assume the population is normally distributed. c = 0.99, s = 16.5,...

Q: Find the indicated binomial probabilities. If convenient, use technology or

Find the indicated binomial probabilities. If convenient, use technology or Table 2 in Appendix B. Eighty-eight percent of U.S. civilian full-time employees have access to medical care benefits. You r...

Q: In a random sample of 36 top-rated roller coasters,

In a random sample of 36 top-rated roller coasters, the average height is 165 feet and the standard deviation is 67 feet. Construct a 90% confidence interval form. Interpret the results.

Q: You research the heights of top-rated roller coasters and find

You research the heights of top-rated roller coasters and find that the population mean is 160 feet. In Exercise 17, does the t-value fall between -t0.95 and t0.95?

Q: Let p be the population proportion for the situation. a

Let p be the population proportion for the situation. a. Find point estimates of p and q, b. construct 90% and 95% confidence intervals for p, and c. interpret the results of part (b) and compare t...