MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question
a. Determine the sample proportions.
Determine the sample proportion
p1.
p1=enter your response here
(Round to three decimal places as needed.)Part 2
Determine the sample proportion
p2.
p2=enter your response here
(Round to three decimal places as needed.)Part 3
Determine the pooled sample proportion
pp.
pp=enter your response here
(Round to three decimal places as needed.)Part 4
b. Decide whether using the two-proportions z-procedures is appropriate.
Check that the assumptions are satisfied. Select all that apply.
The assumptions are satisfied, so using the procedures is appropriate.
Since
x1
is less than 5, using the procedures is not appropriate.Since
n2−x2
is less than 5, using the procedures is not appropriate.Since
x2
is less than 5, using the procedures is not appropriate.Since
n1−x1
is less than 5, using the procedures is not appropriate.Part 5
c. If appropriate, use the two-proportions z-test to conduct the required hypothesis test. What are the hypotheses for this test?
H0: p1=p2, Ha: p1≠p2
H0: p1=p2, Ha: p1<p2
H0: p1<p2, Ha: p1=p2
H0: p1≠p2, Ha: p1=p2
H0: p1=p2, Ha: p1>p2
H0: p1>p2, Ha: p1=p2
Using the two-proportions z-procedures is not appropriate.
Part 6
Determine the test statistic, if appropriate. Select the correct choice below and, if necessary, fill in the answer box to complete your answer.
z=enter your response here
(Round to two decimal places as needed.)Using the two-proportions z-procedures is not appropriate.
Part 7
Identify the P-value, if appropriate. Select the correct choice below and, if necessary, fill in the answer box to complete your answer.
The P-value is
enter your response here.
(Round to three decimal places as needed.)
Using the two-proportions z-procedures is not appropriate.
Part 8
Which of the following is the correct conclusion for the hypothesis test?
At the 5% significance level,
do not reject
H0;
the data
provide
sufficient evidence to accept
Ha.
At the 5% significance level,
reject
H0;
the data
provide
sufficient evidence to accept
Ha.
At the 5% significance level,
do not reject
H0;
the data
do not provide
sufficient evidence to accept
Ha.
At the 5% significance level,
reject
H0;
the data
do not provide
sufficient evidence to accept
Ha.
Using the two-proportions z-procedures is not appropriate.
d. If appropriate, use the two-proportions z-interval procedure to find the specified confidence interval.
Select the correct choice below and, if necessary, fill in the answer boxes to complete your answer.
The 90% confidence interval for
p1−p2
is from
enter your response here
to
enter your response here.
(Round to three decimal places as needed.)
Using the two-proportions z-procedures is not appropriate.
Transcribed Image Text:The numbers of successes and the sample sizes for independent simple random samples from two
populations are provided for a right-tailed test. Use a 90% confidence interval. Complete parts (a) through
(d).
x₁ = 11, n₁ = 60, x₂ = 10, n₂ = 70, x=0.05
Click here to view a table of areas under the standard normal curve for negative values of z.
Click here to view a table of areas under the standard normal curve for positive values of z.
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