The length of human pregnancies is approximately normal with mean = 266 days and standard deviation o = 16 days. Complete parts (a) through (f). a) What is the probability that a randomly selected pregnancy lasts less than 260 days? The probability that a randomly selected pregnancy lasts less than 260 days is approximately 45.2194 Round to four decimal places as needed.) nterpret 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 less than 260 days. O B. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last exactly 260 days. O C. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last more than 260 days. b) Suppose a random sample of 19 human pregnancies is obtained. Describe the sampling distribution of the sample mean length of pregnancies. The sampling distribution of x is normal with H; = and o; =: Type integers or decimals rounded to four decimal places as needed.) c) What is the probability that a random sample of 19 pregnancies has a mean gestation period of 260 days or less? The probability that the mean of a random sample of 19 pregnancies is less than 260 days is approximately. Round to four decimal places as needed.) nterpret 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 independent random samples of size n= 19 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of 260 days or less. O 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 exactly 260 days. O C. If 100 independent random samples of size n = 19 pregnancies were obtained from this population, we would expect of 260 days or more. sample(s) to have a sample mean
The length of human pregnancies is approximately normal with mean = 266 days and standard deviation o = 16 days. Complete parts (a) through (f). a) What is the probability that a randomly selected pregnancy lasts less than 260 days? The probability that a randomly selected pregnancy lasts less than 260 days is approximately 45.2194 Round to four decimal places as needed.) nterpret 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 less than 260 days. O B. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last exactly 260 days. O C. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last more than 260 days. b) Suppose a random sample of 19 human pregnancies is obtained. Describe the sampling distribution of the sample mean length of pregnancies. The sampling distribution of x is normal with H; = and o; =: Type integers or decimals rounded to four decimal places as needed.) c) What is the probability that a random sample of 19 pregnancies has a mean gestation period of 260 days or less? The probability that the mean of a random sample of 19 pregnancies is less than 260 days is approximately. Round to four decimal places as needed.) nterpret 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 independent random samples of size n= 19 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of 260 days or less. O 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 exactly 260 days. O C. If 100 independent random samples of size n = 19 pregnancies were obtained from this population, we would expect of 260 days or more. sample(s) to have a sample mean
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The length of human pregnancies is approximately normal with mean u = 266 days and standard deviation o = 16 days. Complete parts (a) through (f).
(a) What is the probability that a randomly selected pregnancy lasts less than 260 days?
The probability that a randomly selected pregnancy lasts less than 260 days is approximately 45.2194
(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 less than 260 days.
B. If 100 pregnant individuals were selected independently from this population, we would expect
pregnancies to last exactly 260 days.
C. If 100 pregnant individuals were selected independently from this population, we would expect
pregnancies to last more than 260 days.
(b) Suppose a random sample of 19 human pregnancies is obtained. Describe the sampling distribution of the sample mean length of pregnancies.
阪=L|and
(Type integers or decimals rounded to four decimal places as needed.)
The sampling distribution of x is
normal
with
0: =
(c) What is the probability that a random sample of 19 pregnancies has a mean gestation period of 260 days or less?
The probability that the mean of a random sample of 19 pregnancies is less than 260 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 independent random samples of size n = 19 pregnancies were obtained from this population, we would expect
sample(s) to have a sample mean
of 260 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 exactly 260 days.
C. If 100 independent random samples of size n= 19 pregnancies were obtained from this population, we would expect
of 260 days or more.
sample(s) to have a sample mean
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