(a) What is the probability that a randomly selected pregnancy lasts less than 196 days? The probability that a randomly selected pregnancy lasts less than 196 days is approximately- (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.) O A. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last more than 196 days. O B. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last less than 196 days. OC. If 100 pregnant individuals were selected independently from this population, we would expect) pregnancies to last exactly 196 days. (b) Suppose a random sample of 21 pregnancies is obtained. Describe the sampling distribution of the sample mean length of pregnancies. The sampling distribution of x is V with H; =D and o; = (Round to four decimal places as needed.) (c) What is the probability that random sample of 21 pregnancies has a mean gestation period of 196 days or less? The probability that the mean of a random sample of 21 pregnancies is less than 196 days is approximatelyO (Round to four decimal places as needed.) Interpret this probability. Select the correct choice below and fill in the answer box within your choice.

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ISBN:9781119256830
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Chapter1: Starting With Matlab
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Answers for A, B, and C. 

Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean µ= 203 days and standard deviation o = 19 days. Complete parts (a) through (f) below.
(a) What is the probability that a randomly selected pregnancy lasts less than 196 days?
The probability that a randomly selected pregnancy lasts less than 196 days is approximately |. (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.)
O A. If 100 pregnant individuals were selected independently from this population, we would expect
pregnancies to last more than 196 days.
O B. If 100 pregnant individuals were selected independently from this population, we would expect
pregnancies to last less than 196 days.
O C. If 100 pregnant individuals were selected independently from this population, we would expect
pregnancies to last exactly 196 days.
(b) Suppose a random sample of 21 pregnancies is obtained. Describe the sampling distribution of the sample mean length of pregnancies.
The sampling distribution of x is
V with H =D and o; =
(Round to four decimal places as needed.)
(c) What is the probability that a random sample of 21 pregnancies has
mean gestation period of 196 days or less?
The probability that the mean of a random sample of 21 pregnancies is less than 196 days is approximately
(Round to four decimal places as needed.)
Interpret this probability. Select the correct choice below and fill in the answer box within your choice.
IDaund ta the nooront intear on nondad
Transcribed Image Text:Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean µ= 203 days and standard deviation o = 19 days. Complete parts (a) through (f) below. (a) What is the probability that a randomly selected pregnancy lasts less than 196 days? The probability that a randomly selected pregnancy lasts less than 196 days is approximately |. (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.) O A. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last more than 196 days. O B. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last less than 196 days. O C. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last exactly 196 days. (b) Suppose a random sample of 21 pregnancies is obtained. Describe the sampling distribution of the sample mean length of pregnancies. The sampling distribution of x is V with H =D and o; = (Round to four decimal places as needed.) (c) What is the probability that a random sample of 21 pregnancies has mean gestation period of 196 days or less? The probability that the mean of a random sample of 21 pregnancies is less than 196 days is approximately (Round to four decimal places as needed.) Interpret this probability. Select the correct choice below and fill in the answer box within your choice. IDaund ta the nooront intear on nondad
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