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Question 6 0/5 pts 9 10 2 4 @ Details You are interested in finding a 95% confidence interval for the mean number of visits for physical therapy patients. The data below show the number of visits for 13 randomly selected physical therapy patients. Round answers to 3 decimal places where possible. 7 11 15 7 15 6 22 9 23 10 26 23 28 a. To compute the confidence interval use a [? v | distribution. b. With 95% confidence the population mean number of visits per physical therapy patient is between and visits . c. If many groups of 13 randomly selected physical therapy patients are studied, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean number of visits per patient and about percent will not contain the true population mean number of visits per patient. Hint: Hints Video [+] Question Help: Message instructor Submit Question Question 7 0/2 pts 9 10 2 4 @ Details The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the reduction in systolic blood pressure is 39.8 for a sample of size 26 and standard deviation 11.5. Estimate how much the drug will lower a typical patient's systolic blood pressure (using a 90% confidence level). Assume the data is from a normally distributed population. Enter your answer as a tri-linear inequality accurate to three decimal places. Question Help: Message instructor Submit