Question

1. In a random sample of 276 non-seatbelt wearing passengers involved in a car crash, 34 were killed. In a random sample of 408 seatbelt wearing passengers involved in a car crash, 23 were killed. Find the test statistic (2 decimal places): Give the P-value (4 decimal places - if less than 0.001 answer 0):

2. Based on a sample of 40 men, 45% owned cats Based on a sample of 60 women, 55% owned cats. The test statistic is: (to 2 decimals) The p-value is: (to 4 decimals)

3. In a random sample of 183 females, 147 have had a wellness visit with their physician in the past year. In a random sample of 234 males, 183 have had a wellness visit with their physician in the past year. Find the test statistic (2 decimal places): Give the P-value (4 decimal places - if less than 0.001 answer 0):

Answer #1

A simple random sample of front-seat occupants involved in car
crashes is obtained. Among 2500 occupants not wearing seat belts,
15 were killed. Among 7500 occupants wearing seat belts, 15 were
killed. Use this data with 0.05 significance level to test the
claim that the fatality rate is higher for those not wearing seat
belts. (Write all necessary steps like Hypotheses, Test Statistic,
P-value & Conclusion) Given that P(z<3.17)=0.9992.

A simple random sample of front-seat occupants involved in car
crashes is obtained. Among 2500 occupants not wearing seat belts,
15 were killed. Among 7500occupants wearing seat belts, 15 were
killed. Use this data with 0.05 significance level to test the
claim that the fatality rate is higher for those not wearing seat
belts. (Write all necessary steps like Hypotheses, Test Statistic,
P-value & Conclusion)
Given that.

A simple random sample of front-seat occupants involved in car
crashes is obtained. Among 2500 occupants not wearing seat belts,
15 were killed. Among 7500 occupants wearing seat belts, 15 were
killed. Use this data with 0.05 significance level to test the
claim that the fatality rate is higher for those not wearing seat
belts. (Write all necessary steps like Hypotheses, Test Statistic,
P-value & Conclusion)
Given that
Pz<3.17=0.9992 .

A simple random sample of front-seat occupants involved in car
crashes is obtained. Among 2997 occupants not wearing seat belts,
29 were killed. Among 7657 occupants wearing seat belts, 13 were
killed. Use a 0.050 significance level to test the claim that seat
belts are effective in reducing fatalities.
a. Test the claim using a hypothesis test.
Consider the first sample to be the sample of occupants not
wearing seat belts and the second sample to be the sample of...

A simple random sample of front-seat occupants involved in car
crashes is obtained. Among 2997 occupants not wearing seat belts,
32 were killed. Among 7649 occupants wearing seat belts, 10 were
killed. Use a 0.05 significance level to test the claim that seat
belts are effective in reducing fatalities.
- Identify the test statistic?
- Identify the p value?
- Test the claim by constructing an appropriate
confidence level?
- What is the conclusion base on the hypothesis
test?
-...

1. A simple random sample of front seat occupants involved in
car crashes is obtained. Among 2823 occupants not wearing seat
belts, 31 were killed. Among 7765 occupants wearing seat belts, 16
were killed. Does the data provide evidence to conclude that seat
belts are effective in avoiding fatalities. Perform a hypothesis
test at the 5% significance level.

9. A simple random sample of front-seat occupants involved in
car crashes was obtained. Among 7,000 occupants not wearing seat
belts, 18
were killed. Among 7765 occupants wearing seat belts, 16 were
killed. Use a 0.05 significance level to test the claim that seat
belts are effective
in reducing fatalities using the critical value
approach.

A simple random sample of front-seat occupants involved in car
crashes is obtained. Among 2969 occupants not wearing seat belts,
32 were killed. Among 7784 occupants wearing seat belts, 20 were
killed. Use a 0.01 significance level to test the claim that seat
belts are effective in reducing fatalities. Complete parts (a)
through (c) below. a. Test the claim using a hypothesis test.
Consider the first sample to be the sample of occupants not wearing
seat belts and the second...

1. A simple random sample of front seat occupants involved in
car accidents is obtained. Among 3,281 occupants who do not wear
seat belts, 60 were killed. Among 9285 occupants with seat belts,
120 were killed. Do the data provide evidence to conclude that seat
belts are effective in preventing deaths? Perform a hypothesis test
at the 5% significance level.

Is there a difference between men and women when it comes to
seeking preventative healthcare? At the alpha=0.10 level of
significance, test the claim that the proportion of those who have
had a wellness visit with their physician in the past year is the
same for men and women. Let Pf represent the proportion of females
who have had a wellness visit with their physician in the past year
and Pm represent the proportion of males how have done the...

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