# Question: A researcher collects a sample of 25 measurements from a

A researcher collects a sample of 25 measurements from a population and wants to find a 99% confidence interval.

a. What value should he use for t*? (Recall that df = n - 1 for a one-sample t-interval.) Use the table given for Exercise 9.25.

b. Why is the answer to this question larger than the answer to Exercise 9.25?

a. What value should he use for t*? (Recall that df = n - 1 for a one-sample t-interval.) Use the table given for Exercise 9.25.

b. Why is the answer to this question larger than the answer to Exercise 9.25?

**View Solution:**## Answer to relevant Questions

A hamburger chain sells large hamburgers. When we take a sample of 30 hamburgers and weigh them, we find that the mean is 0.51 pounds and the standard deviation is 0.2 pound. a. State how you would fill in the numbers below ...In finding a confidence interval for a random sample of 30 students GPAs, one interval was (2.60, 3.20) and the other was (2.65, 3.15). a. One of them is a 95% interval and one is a 90% interval. Which is which, and how do ...Data on the disk and website show reaction distances in centimeters for the dominant hand for a random sample of 40 independently chosen college students. Smaller distances indicate quicker reactions. a. Make a graph of the ...Thirty GPAs from a randomly selected sample of statistics students at Oxnard College are available at this text's website. Assume that the population distribution is approximately Normal. The technician in charge of records ...The table shows the Minitab output for a two-sample t-test for the number of televisions owned in households of random samples of students at two different community colleges. Each individual was randomly chosen ...Post your question