Here are summary statistics for randomly selected weights of newborn girls: n = 36, x= 3180.6 g, s = 700.5 g. Use a confidence level of 95% to complete parts (a) through (d) below. a. Identify the critical value ta/2 used for finding the margin of error. tα/2 = 2.02 (Round to two decimal places as needed.) b. Find the margin of error. E = 235.8 g (Round to one decimal place as needed.) c. Find the confidence interval estimate of μ. 2944.8 g <μ< 3416.4 g (Round to one decimal place as needed.)
Here are summary statistics for randomly selected weights of newborn girls: n = 36, x= 3180.6 g, s = 700.5 g. Use a confidence level of 95% to complete parts (a) through (d) below. a. Identify the critical value ta/2 used for finding the margin of error. tα/2 = 2.02 (Round to two decimal places as needed.) b. Find the margin of error. E = 235.8 g (Round to one decimal place as needed.) c. Find the confidence interval estimate of μ. 2944.8 g <μ< 3416.4 g (Round to one decimal place as needed.)
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=3180.6 g, s = 700.5 g. Use a
confidence level of 95% to complete parts (a) through (d) below.
a. Identify the critical value to/2 used for finding the margin of error.
tx/2 = = 2.02
(Round to two decimal places as needed.)
b. Find the margin of error.
E = 235.8 g
(Round to one decimal place as needed.)
c. Find the confidence interval estimate of µ.
2944.8 g <μ< 3416.4 g
(Round to one decimal place as needed.)
d. Write a brief statement that interprets the confidence interval. Choose the correct answer below.
A. One has 95% confidence that the interval from the lower bound to the upper bound contains the true value of
the population mean weight of newborn girls.
B. There is a 95% chance that the true value of the population mean weight of newborn girls will fall between the
lower bound and the upper bound.
C. One has 95% confidence that the sample mean weight of newborn girls is equal to the population mean weight
of newborn girls.
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