Assume that a simple random sample has been selected and test the given claim. Listed below are the lead concentrations in g/g measured in different traditional medicines. Use a 0.05 significance level to test the claim that the mean lead concentration for all such medicines is less than 13 g/g. 3.0 6.5 6.0 5.0 20.5 7.5 11.0 20.5 12.0 17.5 Identify the value of the test statistic. -1.00 (Round to two decimal places as needed.) Identify the P-value. (Round to three decimal places as needed.) Question list K Question 10 Refer to the accompanying data set and construct a 95% confidence interval estimate of the mean pulse rate of adult females; then do the same for adult males. Compare the results. Click the icon to view the pulse rates for adult females and adult males. Pulse Rates Question 11 Question 12 Construct a 95% confidence interval of the mean pulse rate for adult females. bpm < < bpm (Round to one decimal place as needed.) Construct a 95% confidence interval of the mean pulse rate for adult males. bpm The lengths of pregnancies are normally distributed with a mean of 267 days and a standard deviation of 15 days. a. Find the probability of a pregnancy lasting 309 days or longer. b. If the length of pregnancy is in the lowest 3%, then the baby is premature. Find the length that separates premature babies from those who are not premature. Click to view page 1 of the table. Click to view page 2 of the table. a. The probability that a pregnancy will last 309 days or longer is (Round to four decimal places as needed.) days are considered premature. b. Babies who are born on or before (Round to the nearest integer as needed.)