Here are summary statistics for randomly selected weights of newborn girls: n= 36, x= 3222.2 g, s= 686.7 g. Use a confidence level of 90% to complete through (d) below. a. Identify the critical value to/2 used for finding the margin of error. ¹a/2=0 (Round to two decimal places as needed.) b. Find the margin of error. (Round to one decimal place as needed.) c. Find the confidence interval estimate of u.
Here are summary statistics for randomly selected weights of newborn girls: n= 36, x= 3222.2 g, s= 686.7 g. Use a confidence level of 90% to complete through (d) below. a. Identify the critical value to/2 used for finding the margin of error. ¹a/2=0 (Round to two decimal places as needed.) b. Find the margin of error. (Round to one decimal place as needed.) c. Find the confidence interval estimate of u.
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Transcribed Image Text:Here are summary statistics for randomly selected weights of newborn girls: n= 36, x= 3222.2 g, s= 686.7 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.
¹a/2=0
(Round to two decimal places as needed.)
b. Find the margin of error.
E=
(Round to one decimal place as needed.)
c. Find the confidence interval estimate of μ.
g<p
(Round to one decimal place as needed.)
d. Write a brief statement that interprets the confidence interval. Choose the correct answer below.
O A. Approximately 90% of sample mean weights of newborn girls will fall between the lower bound and the upper bound.
OB. 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.
OC. One has 90% confidence that the sample mean weight of newborn girls is equal to the population mean weight of newborn girls.
O D. 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.
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