Sample X Sample p 95% CI Z-Value P.Value 1888 2,145 0.880186 (0.866444,0.893929) -3.06 0.002 a. Is the test two-tailed, left-tailed, or right-tailed? O Two-tailed test O Left-tailed test O Right tailed test b. What is the test statistic? The test statistic is (Round to two decimal places as needed) c. What is the P-value? The P-value isO (Round to three decimal places as needed.) d. What is the null hypothesis and what do you conclude about it? Identify the null hypothesis OA. Hp>09 OB. H p<09 OC. H pr09
Sample X Sample p 95% CI Z-Value P.Value 1888 2,145 0.880186 (0.866444,0.893929) -3.06 0.002 a. Is the test two-tailed, left-tailed, or right-tailed? O Two-tailed test O Left-tailed test O Right tailed test b. What is the test statistic? The test statistic is (Round to two decimal places as needed) c. What is the P-value? The P-value isO (Round to three decimal places as needed.) d. What is the null hypothesis and what do you conclude about it? Identify the null hypothesis OA. Hp>09 OB. H p<09 OC. H pr09
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
100%
![A poll of 2,145 randomly selected adults showed that 88% of them own cell phones. The technology display below results from a test of the claim that 90% of adults
own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.05 significance level to complete parts (a) through (0).
Test of p= 0.9 vs p#0.9
N
Sample x
Sample p
95% CI
Z-Value
P.Value
1888 2,145
0.880186
(0.866444,0.893929) -3.06
0.002
a. Is the test two-tailed, left-tailed, or right-tailed?
Two-tailed test
Left-tailed test
O Right tailed test
b. What is the test statistic?
The test statistic is
(Round to two decimal places as needed )
c. What is the P-value?
The P-value is
(Round to three decimal places as needed.)
d. What is the null hypothesis and what do you condlude about it?
Identify the null hypothesis
OA. Ha: p>0.9
OB. H p<09
OC. H pr09](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0c9bda6b-973d-4fed-91dd-23d2428d0338%2F1fe88708-bc2e-4917-8600-acf7216f9db8%2Fvoaprr_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A poll of 2,145 randomly selected adults showed that 88% of them own cell phones. The technology display below results from a test of the claim that 90% of adults
own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.05 significance level to complete parts (a) through (0).
Test of p= 0.9 vs p#0.9
N
Sample x
Sample p
95% CI
Z-Value
P.Value
1888 2,145
0.880186
(0.866444,0.893929) -3.06
0.002
a. Is the test two-tailed, left-tailed, or right-tailed?
Two-tailed test
Left-tailed test
O Right tailed test
b. What is the test statistic?
The test statistic is
(Round to two decimal places as needed )
c. What is the P-value?
The P-value is
(Round to three decimal places as needed.)
d. What is the null hypothesis and what do you condlude about it?
Identify the null hypothesis
OA. Ha: p>0.9
OB. H p<09
OC. H pr09
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