Question

Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean ? = 188 days and standard deviation ? = 11 days. Complete parts (a) through (f) below. (a) What is the probability that a randomly selected pregnancy lasts less than 184 days? The probability that a randomly selected pregnancy lasts less than 184 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.) A. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last less than 184 days. B. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last more than 184 days. C. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last exactly 184 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 with ?_?x = and ?_?x = . (Round to four decimal places as needed.) (c) What is the probability that a random sample of 21 pregnancies has a mean gestation period of 184 days or less? The probability that the mean of a random sample of 21 pregnancies is less than 184 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.) A. If 100 independent random samples of size n = 21 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of 184 days or less. B. If 100 independent random samples of size n = 21 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of 184 days or more. C. If 100 independent random samples of size n = 21 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of exactly 184 days. (d) What is the probability that a random sample of 33 pregnancies has a mean gestation period of 184 days or less? The probability that the mean of a random sample of 33 pregnancies is less than 184 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.)

          Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean ? = 188 days and standard deviation ? = 11 days. Complete parts (a) through (f) below.

(a) What is the probability that a randomly selected pregnancy lasts less than 184 days?
The probability that a randomly selected pregnancy lasts less than 184 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.)
A. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last less than 184 days.
B. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last more than 184 days.
C. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last exactly 184 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 with ?_?x = and ?_?x = . (Round to four decimal places as needed.)

(c) What is the probability that a random sample of 21 pregnancies has a mean gestation period of 184 days or less?
The probability that the mean of a random sample of 21 pregnancies is less than 184 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.)
A. If 100 independent random samples of size n = 21 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of 184 days or less.
B. If 100 independent random samples of size n = 21 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of 184 days or more.
C. If 100 independent random samples of size n = 21 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of exactly 184 days.

(d) What is the probability that a random sample of 33 pregnancies has a mean gestation period of 184 days or less?
The probability that the mean of a random sample of 33 pregnancies is less than 184 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.)

Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean ? = 188 days and standard deviation ? = 11 days. Complete parts (a) through (f) below.

(a) What is the probability that a randomly selected pregnancy lasts less than 184 days?
The probability that a randomly selected pregnancy lasts less than 184 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.)
A. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last less than 184 days.
B. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last more than 184 days.
C. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last exactly 184 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 with ??x = and ??x = . (Round to four decimal places as needed.)

(c) What is the probability that a random sample of 21 pregnancies has a mean gestation period of 184 days or less?
The probability that the mean of a random sample of 21 pregnancies is less than 184 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.)
A. If 100 independent random samples of size n = 21 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of 184 days or less.
B. If 100 independent random samples of size n = 21 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of 184 days or more.
C. If 100 independent random samples of size n = 21 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of exactly 184 days.

(d) What is the probability that a random sample of 33 pregnancies has a mean gestation period of 184 days or less?
The probability that the mean of a random sample of 33 pregnancies is less than 184 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.)

Added by William H.

Question

Please give Ace some feedback