Mathematics, 19.07.2021 18:20 montanolumpuy
A poll of 2,060 randomly selected adults showed that 89% of them own cell phones. The technology display below results from a test of the claim that 91% of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.01 significance level to complete parts (a) through (e).
Test of p=0.91 vs p≠0.91
Sample X N Sample p 95% CI Z-Value p-Value
1 1833
2,060 0.889806 ( 0.872035 , 0.907577 ) ~ 3.20 0.001
a. Is the test two-tailed, left-tailed, or right-tailed?∙
Left-tailed test∙
Two-tailed test∙
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 conclude about it?
Identify the null hypothesis.
A. H0:p<0.91∙
B. H0:p≠0.91∙
C. H0:p>0.91∙
D. H0:p=0.91.
Answers: 1
Mathematics, 21.06.2019 18:30
Which statement describes surface features called maria on the moon
Answers: 3
Mathematics, 21.06.2019 22:40
What rotation was applied to triangle def to create d’e’f’?
Answers: 2
Mathematics, 22.06.2019 00:30
y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?
Answers: 1
A poll of 2,060 randomly selected adults showed that 89% of them own cell phones. The technology dis...
Computers and Technology, 17.07.2020 23:01
Mathematics, 17.07.2020 23:01
Computers and Technology, 17.07.2020 23:01
Mathematics, 17.07.2020 23:01
Mathematics, 17.07.2020 23:01
Mathematics, 17.07.2020 23:01
Mathematics, 17.07.2020 23:01
Mathematics, 17.07.2020 23:01
History, 17.07.2020 23:01