Question

Section 8.3 Examples SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Provide an appropriate response. 1) A sociologist develops a test to measure attitudes about public transportation, and 27 randomly selected subjects are given the test. Their mean score is 76.2 and their standard deviation is 21.4. Construct the 95% confidence interval for the mean score of all such subjects. 2) A savings and loan association needs information concerning the checking account balances of its local customers. A random sample of 14 accounts was checked and yielded a mean balance of $664.14 and a standard deviation of $29729. Find a 98% confidence interval for the true mean checking account balance for local customers. 3) A sample of 81 calculus students at a large college had a mean mathematics 26 with a standard deviation of 6, Find a 95% confidence interval for the mean mathematics ACT score for all calculus students at this college 4) Typically, how much sugar is in a cookie with reduced sugar? You take a random sample4) grams and a standard deviation of 1.1 grams of sugar. Create a 99% confidence interval for the mean grams of sugar

Answer 1