ust answer the Z
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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just answer the Z
![A report included the following information on the heights (in.) for non-Hispanic white females.
Sample Sample Std. Error
Size
Mean
Mean
64.9
0.09
63.4
0.11
Age
20-39
60 and older
866
935
(a) Calculate a confidence interval at confidence level approximately 95% for the difference between population mean height for the younger women
and that for the older women. (Use 20-39-60 and older)
]✔)
1.2214
1.7785
Interpret the interval.
We are 95% confident that the true average height of younger women is greater than that of older women by an amount outside the
confidence interval.
We cannot draw a conclusion from the given information.
We are 95% confident that the true average height of younger women is less than that of older women by an amount within the
confidence interval.
We are 95% confident that the true average height of younger women is greater than that of older women by an amount within the
confidence interval.
(b) Let u, denote the population mean height for those aged 20-39 and 4₂ denote the population mean height for those aged 60 and older. Interpret
the hypotheses Ho: M₁ M₂ = 1 and H₂: My - M₂ > 1.
The null hypothesis states that the true mean height for younger women is more than 1 inch higher than for older women. The
alternative hypothesis states that the true mean height for younger women is 1 inch higher than for older women.
The null hypothesis states that the true mean height for older women is more than 1 inch higher than for younger women. The
alternative hypothesis states that the true mean height for older women is 1 inch higher than for younger women.
The null hypothesis states that the true mean height for older women is 1 inch higher than for younger women. The alternative
hypothesis states that the true mean height for older women is more than 1 inch higher than for younger women.
The null hypothesis states that the true mean height for younger women is 1 inch higher than for older women. The alternative
hypothesis states that the true mean height for younger women is more than 1 inch higher than for older women.
Carry out a test of these hypotheses at significance level 0.001. Calculate the test statistic and determine the P-value. (Round your test statistic
to two decimal places and your P-value to four decimal places.)
z = 11.26
P-value = 0.0001](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4d420b9a-482d-47e6-8321-72477fc946ab%2F15ff1054-dcbe-4ee9-8aee-1c750021bfeb%2F90e2x5h_processed.png&w=3840&q=75)
Transcribed Image Text:A report included the following information on the heights (in.) for non-Hispanic white females.
Sample Sample Std. Error
Size
Mean
Mean
64.9
0.09
63.4
0.11
Age
20-39
60 and older
866
935
(a) Calculate a confidence interval at confidence level approximately 95% for the difference between population mean height for the younger women
and that for the older women. (Use 20-39-60 and older)
]✔)
1.2214
1.7785
Interpret the interval.
We are 95% confident that the true average height of younger women is greater than that of older women by an amount outside the
confidence interval.
We cannot draw a conclusion from the given information.
We are 95% confident that the true average height of younger women is less than that of older women by an amount within the
confidence interval.
We are 95% confident that the true average height of younger women is greater than that of older women by an amount within the
confidence interval.
(b) Let u, denote the population mean height for those aged 20-39 and 4₂ denote the population mean height for those aged 60 and older. Interpret
the hypotheses Ho: M₁ M₂ = 1 and H₂: My - M₂ > 1.
The null hypothesis states that the true mean height for younger women is more than 1 inch higher than for older women. The
alternative hypothesis states that the true mean height for younger women is 1 inch higher than for older women.
The null hypothesis states that the true mean height for older women is more than 1 inch higher than for younger women. The
alternative hypothesis states that the true mean height for older women is 1 inch higher than for younger women.
The null hypothesis states that the true mean height for older women is 1 inch higher than for younger women. The alternative
hypothesis states that the true mean height for older women is more than 1 inch higher than for younger women.
The null hypothesis states that the true mean height for younger women is 1 inch higher than for older women. The alternative
hypothesis states that the true mean height for younger women is more than 1 inch higher than for older women.
Carry out a test of these hypotheses at significance level 0.001. Calculate the test statistic and determine the P-value. (Round your test statistic
to two decimal places and your P-value to four decimal places.)
z = 11.26
P-value = 0.0001
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