Runs scored by batsman in 5 one day matches are 50, 70, 82, 93, and 20. The standard deviation is OA 25.89 O B. 25.69 OC 25.79 O D.25.49 OE 25.29

he average age of vehicles registered in the United 96 months. Assume the population is normally distrib a standard deviation of 15 months. Find the probabil he mean age of a cample o of 26 ul

Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. For a random sample of 130 adult males, the mean pulse rate is 68.7 bpm and the standard deviation is 10.7 bpm. Find the value of the test statistic. The value of the test statistic is. (Round to two decimal places as needed.)

pr The lengths of pregnancies are normally distributed with a mean of 269 days and a standard deviation of 15 days. a. Find the probability of a pregnancy lasting 308 days or longer. b. If the length of pregnancy is in the lowest 4%, then the baby is premature. Find the length that separates premature babies from those who are not premature. /2 pr Click to view page 1 of the table. Click to view page 2 of the table. /2 a. The probability that a pregnancy will last 308 days or longer is (Round to four decimal places as needed.) pr b. Babies who are born on or before 12 days are considered premature. (Round to the nearest integer as needed.) /2 12 uc /2 12 or /2 or (2 Enter your answer in each of the answer boxes.