The length of human pregnancies is approximately normal with mean u = 266 days and standard deviation o= 16 days. Complete parts (a) through (f). %3D Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) What is the probability that a randomly selected pregnancy lasts less than 261 days? The probability that a randomly selected pregnancy lasts less than 261 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 less than 261 days. O B. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last exactly 261 days. O C. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last more than 261 days. (b) Suppose a random sample of 30 human pregnancies is obtained. Describe the sampling distribution of the sample mean length of pregnancies. The sampling distribution of x is with H; = and o; =- (Round to four decimal places as needed.)
The length of human pregnancies is approximately normal with mean u = 266 days and standard deviation o= 16 days. Complete parts (a) through (f). %3D Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) What is the probability that a randomly selected pregnancy lasts less than 261 days? The probability that a randomly selected pregnancy lasts less than 261 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 less than 261 days. O B. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last exactly 261 days. O C. If 100 pregnant individuals were selected independently from this population, we would expect pregnancies to last more than 261 days. (b) Suppose a random sample of 30 human pregnancies is obtained. Describe the sampling distribution of the sample mean length of pregnancies. The sampling distribution of x is with H; = and o; =- (Round to four decimal places as needed.)
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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