Question

Given H_{a}: p > 0.20, for which confidence interval
should you reject H_{0}?

Answer #2

answered by: anonymous

Given Ha: p > 0.20, for which confidence interval should you
reject H0?

Info from Dade Botanical Garden
Part 1) Given Ha: p < 0.20, for which confidence
interval should you reject H0?
Part 2) In another test of H0: μ = 40 against
Ha: μ ≠ 40, the sample data yielded the test statistic z
= 2.01. Find the p-value for this test. Round your answer to 4
decimal places.

Consider the following hypothesis test.
H0: p = 0.20
Ha: p ≠ 0.20
A sample of 400 provided a sample proportion
p = 0.185.
(a)
Compute the value of the test statistic. (Round your answer to
two decimal places.)
(b)
What is the p-value? (Round your answer to four decimal
places.)
p-value =
(c)
At
α = 0.05,
what is your conclusion?
Do not reject H0. There is sufficient
evidence to conclude that p ≠ 0.20.Reject
H0. There is sufficient...

Suppose that you are testing the hypotheses H0?: p=0.17 vs. HA?:
p?0.17. A sample of size 200 results in a sample proportion of
0.22.
?a) Construct a 99?% confidence interval for p.
?b) Based on the confidence? interval, can you reject H0 at
?=0.01?? Explain. ?
c) What is the difference between the standard error and
standard deviation of the sample? proportion?
?d) Which is used in computing the confidence? interval?

Suppose that you are testing the hypotheses H0 p=0.21
vs. HA p ?0.21.A sample of size 300 results in a sample
proportion of 0.27.
?a) Construct a 90?% confidence interval for p.
?b) Based on the confidence? interval, can you reject
H0 at alpha=0.100?? Explain.
?c) What is the difference between the standard error and
standard deviation of the sample? proportion?
?d) Which is used in computing the confidence? interval?

Given ?0: ?1 = ?2, for which confidence interval should you
reject ?0?
A. (−2.001,−1.873) B. (−1.968,1.561) C.
(−1.673,1.892) D. (−2.209,0.209)

Suppose that the following hypothesis were tested H0:
p = .75 vs HA: p >.75. The resulting p-value was
0.95. Which of the following is most likely the 95% confidence
interval using the same data?
Answers:
(0.55, 0.65)
(0.75, 0.85)
(0.80, 0.90)
(0.85, 0.95)
Question 5
Suppose that the following hypothesis were tested H0:
p = .75 vs HA: p >.75. The resulting p-value was
.005. Which of the following is most likely the 95% confidence
interval using the same...

With H0: p = 0.4, Ha: p < 0.4 , the test statistic is z = –
1.68. Using a 0.05 significance level, the P-value and the
conclusion about null hypothesis are:
ِA) 0.0465; reject H0
B) 0.093; fail to reject H0
C) 0.9535; fail to reject H0
D) 0.0465; fail to reject H0
what is the correct answer?

Suppose that you are testing the hypotheses H0: μ=12 vs. HA:
μless than<12. A sample of size 25 results in a sample mean of
12.5 and a sample standard deviation of 1.9. a) What is the
standard error of the mean? b) What is the critical value of t*
for a 90% confidence interval? c) Construct a 90% confidence
interval for μ. d) Based on the confidence interval, at
alphaαequals=0.05 can you reject H0? Explain.

a. We are testing H0: μ1 - μ2 =
0. Our 95% confidence interval is (-23.95,-7.41).
We should expect the t-statistic to be _____( greater than 2
/between 0 and 2/ between 0 and -2 /less than -2) .
We should expect the p-value to be _______ (less than .05/
greater than .05/ equal to .05).
We should ______(reject /fail to reject) H0
and conclude that the group 1 population average is _____(smaller/
larger) than the group 2 population average.
It...

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