Question

The accompanying data table lists the weights of male college students in kilograms. Test the claim that male college students have a mean weight that is less than the 8383 kg mean weight of males in the general population. Use a 0.010.01 significance level. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, and conclusion for the test. Assume this is a simple random sample. Calculate the test statistic (round to three decimals) That is the P value?

Answer #1

15. The accompanying data table lists the magnitudes of 50
earthquakes measured on the Richter scale. Test the claim that the
population of earthquakes has a mean magnitude greater than 1.00.
Use a 0.05 significance level. Identify the null hypothesis,
alternative hypothesis, test statistic, P-value, and conclusion
for the test. Assume this is a simple random sample.
0.690
0.740
0.640
0.390
0.700
2.200
1.980
0.640
1.220
0.200
1.640
1.330
2.950
0.900
1.760
1.010
1.260
0.000
0.650
1.460
1.620
1.830
0.990...

A data set lists earthquake depths. The summary statistics
are
nequals=500500,
x overbarxequals=6.366.36
km,
sequals=4.134.13
km. Use a
0.010.01
significance level to test the claim of a seismologist that
these earthquakes are from a population with a mean equal to
6.006.00.
Assume that a simple random sample has been selected. Identify
the null and alternative hypotheses, test statistic, P-value, and
state the final conclusion that addresses the original claim.

The accompanying data table lists the magnitudes of
5050
earthquakes measured on the Richter scale. Test the claim that
the population of earthquakes has a mean magnitude greater than
1.001.00.
Use a
0.010.01
significance level. Identify the null hypothesis, alternative
hypothesis, teststatistic, P-value, and conclusion for the test.
Assume this is a simple random sample.
0.720
0.740
0.640
0.390
0.700
2.200
1.980
0.640
1.220
0.200
1.640
1.320
2.950
0.900
1.760
1.010
1.260
0.000
0.650
1.460
1.620
1.830
0.990
1.560
0.390...

a. Test the claim that the mean GPA of night students is
significantly different than 3.2 at the 0.05 significance level.
The null and alternative hypothesis would be:
Null Hypothesis: mu = 3.2
Alternative Hypothesis: mu ≠ 3.2
The test is: two-tailed
Based on a sample of 40 people, the sample mean GPA was 3.18
with a standard deviation of 0.04
The test statistic is: _____(to 2 decimals)
The positive critical value is:______ (to 2 decimals)
b. Test the claim...

Identify the null and alternative hypothesis(in symbolic and
sentence form), test statistic, P-value(or critical values),
conclusion about the null hypothesis, and final conclusion that
addresses the original claim (Don’t just say Reject the null
hypothesis or fail to reject the null hypothesis).
3. Test the claim that for the population of female college
students, the mean weight is given by μ=132 lb Sample data are
summarized as n=20,x ̅=137lb and s=14.2. Use a significance level
of α=0.10.

A data set lists earthquake depths. The summary statistics are
n=500 x̄=6.39sequals=4.18
km. Use a 0.01 significance level to test the claim of a
seismologist that these earthquakes are from a population with a
mean equal to 6.00
Assume that a simple random sample has been selected. Identify
the null and alternative hypotheses, test statistic, P-value, and
state the final conclusion that addresses the original claim.
What are the null and alternative hypotheses?
Determine the P-value
State the final conclusion...

18.
The accompanying data table lists the magnitudes of 50
earthquakes measured on the Richter scale. Test the claim that the
population of earthquakes has a mean magnitude greater than 1.00.
Use a 0.05 significance level. Identify the null hypothesis,
alternative hypothesis, test statistic, P-value, and conclusion
for the test. Assume this is a simple random sample
Magnitude of Earthquake
0.690
0.740
0.640
0.390
0.700
2.200
1.980
0.640
1.220
0.200
1.640
1.320
2.950
0.900
1.760
1.010
1.260
0.000
0.650...

Identify the null hypothesis, alternative hypothesis, test
statistic, P-value, conclusion about the null hypothesis, and final
conclusion that addresses the original claim. The health of
employees is monitored by periodically weighing them in. A sample
of 54 employees has a mean weight of 183.9 lb. Assuming that ? is
known to be 121.2 lb, use a 0.10 significance level to test the
claim that the population mean of all such employees weights is
less than 200 lb.

A data set lists earthquake depths. The summary statistics
N=500, x =4.39 km, S=4.31 km. Use a 0.01 significance level to
test the claim of a seismologist that these earthquakes are from a
population with a mean equal to 4.00 Assume that a simple random
sample has been selected. Identify the null and alternative
hypotheses, test statistic, P-value, and state the final
conclusion that addresses the original claim.
Determine the test statistic.
Test statistic=
(Round to two decimal places as...

A data set lists earthquake depths. The summary statistics are
nequals500, x overbarequals5.43 km, sequals4.76 km. Use a 0.01
significance level to test the claim of a seismologist that these
earthquakes are from a population with a mean equal to 5.00. Assume
that a simple random sample has been selected. Identify the null
and alternative hypotheses, test statistic, P-value, and state
the final conclusion that addresses the original claim.

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