Question

In 1997, a survey of 880 U.S. households showed that 149 of them used email. Use a 0.05 significance level to test the cl

aim that more than 14% of U.S. households used email in 1997.

H0 :p____ 0.14 For Q17(circle one: equal to, less than, greater than, not equal to)

H1: p___ 0.14 For Q18 (circle one: equal to, less than, greater than, not equal to)

Test Statistic z =__________ Q19 (ROUND TO 2 DECIMAL PLACES)

P-value: p =_____________ Q20 (ROUND TO4DECIMAL PLACES)

Decision:________________________Q21 (circle one: Reject H0 , Fail to Reject H0)

Conclusion:______________________________________________________________Q22 Circle one for the conclusion:

There is sufficient evidence to support the claim.

OR

There is not sufficient evidence to support the claim.

Answer #1

In 1997, a survey of 880 households showed that 149 of them
use e-mail. Use those sample results to test the claim that more
than 15% of households use e-mail. Use a 0.05 significance level.
Use this information to answer the following questions.
b. What is the test statistic?
Z=
(Round to two decimal places as needed.)
c. What is the P-value?
P-value=
(Round to three decimal places as needed.)
d. What is the conclusion?
There is sufficient evidence to...

5. A sample of 50 impossible whoppersandwiches have a mean fat
content of 37.6g and standard deviation of 4.9g . A sample of 58
regular whopper sandwiches have a mean fat content of 39.3g and
standard deviation of 2.7g. Use a 0.05 significance level to test
the claim that the mean fat content for the impossible whopper is
less than the mean fat content for the regular whopper.
(Assume that the two samples are independent simple random
samples selected from...

5. In 1997, a survey of 940 households showed that 166 of them
use e-mail. Use those sample results to test the claim that more
than 15% of households use e-mail. Use a 0.05 significance level.
Use this information to answer the following questions
a. Which of the following is the hypothesis test to be
conducted?
A.H 0 : p =0.15
H 1 : p > 0.15
B. H 0 : p = 0.15
H 1 : p < 0.15...

A humane society claims that less than
thirty two percent
of U.S. households own a dog. In a random sample of
four hundred and nine
U.S. households,
153
say they own a dog. At
alphaαequals=0.04
is there enough evidence to support the society's claim?(a)
Write the claim mathematically and identify
Upper H 0H0
and
Upper H Subscript aHa.
(b) Find the critical value(s) and identify the rejection
region(s). (c) Find the standardized test statistic. (d) Decide
whether to reject or...

Among 2200 randomly selected adult male passengers 1884 wear
seat belts. Among 2280 randomly selected adult female passengers
1999 wear seat belts. Use a 0.05 significance level to test the
claim that the rate of male passengers who wear seat belts is lower
than the rate of female passengers who wear seat belts.
H0: p1____p2 For Q35 (circle one: equal to, less than, greater
than, not equal to)
H1: p1____ p2 For Q36 (circle one: equal to, less than, greater...

Assume a significance level of α=0.1 and use the given
information to complete parts (a) and (b) below.
Original claim: Women have heights with a mean equal to 156cm.
The hypothesis test results in a P-value of 0.0676
a. State a conclusion about the null hypothesis. (Reject H0 or
fail to reject H0.) Choose the correct answer below.
A. Fail to reject H0 because the P-value is greater than
alphaα.
B. Reject H0 because the P-value is greater than alphaα....

A humane society claims that less than 35% of U.S. households
own a dog. In a random sample of 400 U.S. households, 156 say they
own a dog. At the 10% level of significance is there enough
evidence to support the society’s claim? Note: Show (a) The
hypothesis structure, (b) The p-value and if you accept or reject
the claim, (c) The conclusion as a verbal statement.

When people smoke, the nicotine they absorb is converted to
cotinine, which can be measured.A random sample of 40 smokers has a
mean cotinine level of 172.5 ng/ml with a sample standard deviation
of 119.5 ng/ml. Use a 0.05 significance level to test the claim
that the mean cotinine level of smokers is equal to 200ng/ml.
H0: μ___200 For Q23(circle one: equal to, less than , greater
than, not equal to)
H1: μ___200 For Q24 (circle one:equal to, less than,...

A humane society claims that less than 33% of U.S. households
own a dog. In a random sample of 404 U.S. households, 152 say they
own a dog. At a =0.10, is there enough evidence to support the
society's claim? (a) Write the claim mathematically and identify
H0 and Ha. (b) Find the critical value(s) and identify the
rejection region(s). (c) Find the standardized test statistic.
(d) Decide whether to reject or fail to reject the null
hypothesis, and (e)...

You wish to test the following claim a significance level of
α=0.05α=0.05.
Ho:p=0.14Ho:p=0.14
Ha:p<0.14Ha:p<0.14
You obtain a sample of size n=268n=268 in which there are 19
successful observations.
What is the test statistic for this sample?
test statistic = Round to 3 decimal places.
What is the p-value for this sample?
P-value = Use Technology Round to 4 decimal
places.
The p-value is...
less than (or equal to) αα
greater than αα
This test statistic leads to a decision to...
reject the...

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