Here are summary statistics for randomly selected weights of newborn girls: n = 36, x=3197.2 g, s = 692.6 g. Use a confidence level of 90% to complete parts (a) through (d) below. a. Identify the critical value to/2 used for finding the margin of error. ¹x/2 = (Round to two decimal places as needed.) b. Find the margin of error. E= g (Round to one decimal place as needed.) c. Find the confidence interval estimate of μ. ]g<μ< g (Round to one decimal place as needed.) d. Write a brief statement that interprets the confidence interval. Choose the correct answer below. O A. There is a 90% chance that the true value of the population mean weight of newborn girls will fall between the lower bound and the upper bound. B. Approximately 90% of sample mean weights of newborn girls will fall between the lower bound and the upper bound. O C. One has 90% confidence that the interval from the lower bound to the upper bound contains the true value of the population mean weight of newborn girls. D. One has 90% confidence that the sample mean weight of newborn girls is equal to the population mean weight of newborn girls.
Here are summary statistics for randomly selected weights of newborn girls: n = 36, x=3197.2 g, s = 692.6 g. Use a confidence level of 90% to complete parts (a) through (d) below. a. Identify the critical value to/2 used for finding the margin of error. ¹x/2 = (Round to two decimal places as needed.) b. Find the margin of error. E= g (Round to one decimal place as needed.) c. Find the confidence interval estimate of μ. ]g<μ< g (Round to one decimal place as needed.) d. Write a brief statement that interprets the confidence interval. Choose the correct answer below. O A. There is a 90% chance that the true value of the population mean weight of newborn girls will fall between the lower bound and the upper bound. B. Approximately 90% of sample mean weights of newborn girls will fall between the lower bound and the upper bound. O C. One has 90% confidence that the interval from the lower bound to the upper bound contains the true value of the population mean weight of newborn girls. D. One has 90% confidence that the sample mean weight of newborn girls is equal to the population mean weight of newborn girls.
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:Here are summary statistics for randomly selected weights of newborn girls: n= 36, x = 3197.2 g, s = 692.6 g. Use a confidence level of 90% to complete
parts (a) through (d) below.
a. Identify the critical value to/2 used for finding the margin of error.
ta/2=
(Round to two decimal places as needed.)
b. Find the margin of error.
E= g
(Round to one decimal place as needed.)
c. Find the confidence interval estimate of
μ.
g<μ< g
(Round to one decimal place as needed.)
d. Write a brief statement that interprets the confidence interval. Choose the correct answer below.
O A. There is a 90% chance that the true value of the population mean weight of newborn girls will fall between the lower bound and the upper bound.
B. Approximately 90% of sample mean weights of newborn girls will fall between the lower bound and the upper bound.
C. One has 90% confidence that the interval from the lower bound to the upper bound contains the true value of the population mean weight of
newborn girls.
O D. One has 90% confidence that the sample mean weight of newborn girls is equal to the population mean weight of newborn girls.
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