Question

Decide whether the normal sampling distribution can be used. If it can be used, test the claim about the difference between two population proportions

p 1p1

and

p 2p2

at the given level of significance

alphaα

using the given sample statistics. Assume the sample statistics are from independent random samples.

Claim: |
p 1p1equals=p 2p2, alphaαequals=0.010.01 |

Sample statistics: |
x 1x1equals=2323, n 1n1equals=113113 andx 2x2equals=103103, n 2n2equals=179179 a) find the standardized test statistics |

Answer #1

Decide whether the normal sampling distribution can be used. If
it can be used, test the claim about the difference between two
population proportions p 1 and p 2 at the given level of
significance alpha using the given sample statistics. Assume the
sample statistics are from independent random samples. Claim: p
1equalsp 2, alphaequals0.01 Sample statistics: x 1equals27, n
1equals129 and x 2equals32, n 2equals206 Can a normal sampling
distribution be used?

Decide whether the normal sampling distribution can be used. If
it can be used, test the claim about the difference between two
population proportions p 1 and p 2 at the given level of
significance alpha using the given sample statistics. Assume the
sample statistics are from independent random samples. Claim: p
1equalsp 2, alphaequals0.10 Sample statistics: x 1equals88, n
1equals171 and x 2equals172, n 2equals212

Decide whether the normal sampling distribution can be used. If
it can be used, test the claim about the population proportion p
at the given level of significance
alphaα
using the given sample statistics.Claim:
pnot equals≠0.24;
alphaαequals=0.10;
Sample statistics:
ModifyingAbove p with caretpequals=0.21,
nequals=200
Can the normal sampling distribution be used?
state the null and alternative hypothesis.
determine the critical value.
find the z-test statistic.
what is the result of the test?
Reject
Upper H 0H0.
The data provide sufficient...

Decide whether the normal sampling distribution can be used. If
it can be used, test the claim about the population proportion p
at the given level of significance alpha using the given sample
statistics. Claim: pnot equals0.29; alphaequals0.01; Sample
statistics: ModifyingAbove p with caretequals0.22, nequals150

Decide whether the normal sampling distribution can be used. If
it can be used, test the claim about the population proportion p
at the given level of significance alpha using the given sample
statistics. Claim: pnot equals0.24; alphaequals0.01; Sample
statistics: ModifyingAbove p with caretequals0.19, nequals200

For the following information, determine whether a normal
sampling distribution can be used, where p is the population
proportion,
alphaα
is the level of significance,
ModifyingAbove p with caretp
is the sample proportion, and n is the sample size. If it can
be used, test the claim.Claim:
pgreater than or equals≥0.47
alphaαequals=0.06
Sample statistics:
ModifyingAbove p with caretpequals=0.40,
nequals=180

For the following information, determine whether a normal
sampling distribution can be used, where p is the population
proportion,α is the level of significance, ModifyingAbove p with
caretp is the sample proportion, and n is the sample size. If it
can be used, test the claim. Claim:
p>0.29
α=0.08
Sample statistics:
ModifyingAbove p with caretpequals=0.36
n=375

Use technology and a t-test to test the claim about the
population mean muμ at the given level of significance
alphaα using the given sample statistics. Assume the population
is normally distributed.
Claim: muμgreater than>7474 ; alphaα=0.010
Sample statistics:
x bar=74.374.3 , s=2.92.9 , n=26
What is the p-value of the test statistic?

Test the claim about the population mean,
muμ ,
at the given level of significance using the given sample
statistics. Claim:
muμequals=30
alphaαequals=0.02
sigmaσequals=3.42
Sample statistics:
x overbarxequals=29.5
nequals=66
The standardized test statistic is
nothing.
(Round to two decimal places as needed.)

Rhino viruses typically cause common colds. In a test of the
effectiveness of echinacea,
4343
of the
4848
subjects treated with echinacea developed rhinovirus infections.
In a placebo group,
8181
of the
9898
subjects developed rhinovirus infections. Use a
0.050.05
significance level to test the claim that echinacea has an
effect on rhinovirus infections. Complete parts (a) through (c)
below.
a. Test the claim using a hypothesis test.
Consider the first sample to be the sample of subjects treated
with...

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