Question
12. A poll of 2,108 randomly chosen adults showed 93% of them own cell phones. The...
12. A poll of 2,108 randomly chosen adults showed 93% of them own cell phones. The claim was 91% of all adults own a cell phone.
a. Based on the results above, state your decision and show how you arrived at it. (4 points)
b. State your conclusion. (3 points)
c. Write a confidence statement that correctly interprets the confidence interval. (3 points)
d. In terms of your data, discuss the type of error you could have made and why. (Type I or Type II) 3 points
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
A poll of 2,061 randomly selected adults showed that 97% of them own cell phones. The...
A poll of 2,061 randomly selected adults showed that 97% of them
own cell phones. The technology display below results from a test
of the claim that 94% 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).
Show your work. ***Correct answers are in BOLD (how do we
get those answers)
Test of p=0.94 vs p≠0.94
X= 1989, N= 2061, Sample...
11a. Given the test statistic was (t = -1.24) and the alternative hypothesis was u <...
11a. Given the test statistic was (t = -1.24) and the
alternative hypothesis was u < -1.22 and n was 36 what would the
range of P-Values be? (3 points).
11b. Given the test statistic was (z = 2.30) and the alternative
hypothesis was p > 0.47, determine the P-Value. (3 points)
12. A poll of 2,108 randomly chosen adults showed 93% of them
own cell phones. The claim was 91% of all adults own a cell
phone.
a. Based...
a poll of 2039 randomly selected adults showed that 96% of them own cell phones. the...
a poll of 2039 randomly selected adults showed that
96% of them own cell phones. the technology display below results
from a test of a claim that 92% 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)
a) is the test two-tailed, left-tailed, or right-tailed
b) the test statistic is ( rounded two decimals)
c) the p- value ( rounded three...
A poll of 2,133 randomly selected adults showed that 94% of them own cell phones. The...
A poll of 2,133 randomly selected adults showed that 94% of
them own cell phones. The technology display below results from a
test of the claim that 92% 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
pequals
0.92vs
pnot equals
0.92
Sample
X
N
Sample p
95% CI
Z-Value
P-Value
1
1996
2 comma 133
0.935771
(0.922098,0.949444
)...
A poll of 2 comma 059 randomly selected adults showed that 93% of them own cell...
A poll of 2 comma 059 randomly selected adults showed that 93%
of them own cell phones. The technology display below results from
a test of the claim that 94% 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 pequals0.94 vs pnot equals0.94
Sample X N Sample p 95% CI Z-Value P-Value 1 1909 2 comma 059
0.927149 (0.912396,0.941902)...
A poll of 2 comma 085 randomly selected adults showed that 94% of them own cell...
A poll of 2 comma 085 randomly selected adults showed that 94%
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 0.05 significance level to complete
parts (a) through (e). Test of pequals0.91 vs pnot equals0.91
Sample X N Sample p 95% CI Z-Value P-Value 1 1957 2 comma 085
0.938609 (0.928306,0.948913)
A poll of 2,024 randomly selected adults showed that 94% of them own cell phones. The...
A poll of 2,024 randomly selected adults showed that 94% 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 0.01
significance level to complete parts (a) through (e).
Test of
pequals=0.9 vs p≠0.9
Sample
X
N
Sample p
95% CI
Z-Value
P-Value
1
1904
2,024
0.940711
(0.927190,0.954233)
6.11
0.000
a. Is the...
A poll of 2 comma 1172,117 randomly selected adults showed that 9191% of them own cell...
A poll of
2 comma 1172,117
randomly selected adults showed that
9191%
of them own cell phones. The technology display below results
from a test of the claim that
9393%
of adults own cell phones. Use the normal distribution as an
approximation to the binomial distribution, and assume a
0.010.01
significance level to complete parts (a) through (e).
Test of
pequals=0.930.93
vs
pnot equals≠0.930.93
Sample
X
N
Sample p
95% CI
Z-Value
P-Value
1
19241924
2 comma 1172,117
0.9088330.908833
(0.8927190.892719,0.9249480.924948)...
A poll of 2 comma 047 randomly selected adults showed that 94% of them own cell...
A poll of 2 comma 047 randomly selected adults showed that 94%
of them own cell phones. The technology display below results from
a test of the claim that 95% 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 pequals0.95 vs pnot equals0.95
Sample X N Sample p 95% CI Z-Value P-Value 1 1933 2 comma 047
0.944309 (0.931253,0.957365)...
Claim: Fewer than 93% of adults have a cell phone. In a reputable poll of 1058...
Claim: Fewer than 93% of adults have a cell phone. In a
reputable poll of 1058 adults, 86% said that they have a cell
phone. Find the value of the test statistic.
The value of the test statistic is __
(Round to two decimal places as needed.)
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 12 minutes ago
asked 23 minutes ago
asked 36 minutes ago
asked 43 minutes ago
asked 51 minutes ago
asked 54 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago