Question

8.1.19 Question Help Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean = 212 days and standard deviation o 13 days. Complete parts (a) through (1) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (Rage 2). (c) What is the probability that a random sample of 19 pregnancies has a mean gestation period of 207 days or less? The probability that the mean of a random sample of 19 pregnancies is less than 207 days is approximately 0.0465 (Round to four decimal places as needed.) Interpret this probability. Select the correct choice below and fill in the answer box within your choice (Round to the nearest integer as needed.) -A I 100 independent random samples of size n= 19 pregnancies were obtained from this population, we would expect 5 sample(s) to have a sample mean of 207 days or less B. If 100 independent random samples of size n=19 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of 207 days or more C. If 100 independent random samples of size n= 19 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of exactly 207 days (d) What is the probability that a random sample of 41 pregnancies has a mean gestation period of 207 days or less? The probability that the mean of a random sample of 41 pregnancies is less than 207 days is approximately 0.0069 (Round to four decimal places as needed) Interpret this probability. Select the correct choice below and fill in the answer box within your choice. (Round to the nearest integer as needed.) A. If 100 independent random samples of size n= 41 pregnancies were obtained from this population, we would expect 1 sample(s) to have a sample mean of 207 days or less B. If 100 independent random samples of size n= 41 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of 207 days or more C. If 100 independent random samples of size n= 41 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of exactly 207 days. (e) What might you conclude if a random sample of 41 pregnancies resulted in a mean gestation period of 207 days or loss? This result would be unusual, so the sample likely came from a population whose mean gestation period is less than 212 days (1) What is the probability a random sample of size 18 will have a mean gestation period within 9 days of the mean? The probability that a random sample of size 18 will have a mean gestation period within 9 days of the mean is 0.9967 (Round to four decimal places as needed.) Question is complete. Tap on the red indicators to see incorrect answers. Similar Question All parts showing

I need help. PLEASE DONT USE THE STANDARD NORMAL DISTRIBUTION TABLE. use normalcdf as part of your answer.

Thank you

Answer 1

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