Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value t/2, (b) find the critical value z/2, or (c) state that neither the normal distribution nor the t distribution applies. Here are summary statistics for randomly selected weights of newborn girls: n= 247, x= 31.2 hg, s=7.1 hg. The confidence level is 99%. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. ta/2=L (Round to two decimal places as needed.) В. Za/2 =| (Round to two decimal places as needed.) C. Neither the normal distribution nor the t distribution applies.
Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value t/2, (b) find the critical value z/2, or (c) state that neither the normal distribution nor the t distribution applies. Here are summary statistics for randomly selected weights of newborn girls: n= 247, x= 31.2 hg, s=7.1 hg. The confidence level is 99%. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. ta/2=L (Round to two decimal places as needed.) В. Za/2 =| (Round to two decimal places as needed.) C. Neither the normal distribution nor the t distribution applies.
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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help solve attached images please
Transcribed Image Text:Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a)
find the critical value ty/2, (b) find the critical value za /2, or (c) state that neither the normal
distribution nor the t distribution applies.
Here are summary statistics for randomly selected weights of newborn girls: n= 247, x= 31.2 hg,
s= 7.1 hg. The confidence level is 99%.
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
O A.
ta/2 =
(Round to two decimal places as needed.)
В.
Za/2 =
(Round to two decimal places as needed.)
C. Neither the normal distribution nor the t distribution applies.
Transcribed Image Text:Assume that we want to construct a confidence
40-
interval. Do one of the following, as appropriate:
(a) find the critical value t,/2, (b) find the critical
30-
value za/2, or (c) state that neither the normal
20-
distribution nor the t distribution applies.
10-
The confidence level is 90%, o is not known, and
the histogram of 56 player salaries (in thousands
of dollars) of football players on a team is as
0-
4000
8000 12000 16000 20000
Salary (thousands of dollars)
shown.
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. ta/2=
(Round to two decimal places as needed.)
O B. Za/2-
(Round to two decimal places as needed.)
C. Neither the normal distribution nor the t distribution applies.
Frequency
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