Question 1 of 20 1.0 Points In a one-tailed hypothesis test, a critical point is a point that divides the area under the sampling distribution of a: A. statistic into one rejection region and one nonrejection region. B. parameter into one rejection

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Question 1 of 20

1.0 Points

In a one-tailed hypothesis test, a critical point is a point that divides the area under the sampling distribution of a:

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Question 2 of 20

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A two-tailed hypothesis test contains

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Question 3 of 20

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A researcher wants to test if the mean price of houses in an area is greater than $145,000. The alternative hypothesis for this example will be that the population mean is

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Question 4 of 20

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A researcher wants to test if the mean price of houses in an area is greater than $175,000. The null hypothesis for this example will be that the population mean is

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Question 5 of 20

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For a one-tailed test, the p-value is

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Question 6 of 20

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A two-tailed hypothesis test using the normal distribution reveals that the area under the sampling distribution curve of the mean and located to the right of the sample mean equals .028. What is the p-value for this test?

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Question 7 of 20

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In a hypothesis test with hypotheses H0: Mu GE 37and H1: Mu < 37 , a random sample of 54 elements selected from the population produced a mean of 35.8. Assuming that population standard deviation is 8.9 , what is the approximate p-value for this test?

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Question 8 of 20

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In a hypothesis test with hypotheses Ho: Mu GE 136 and H1: Mu < 136, a random sample of 67 elements selected from the population produced a mean of 130.7. Assume that population sd is 19.2 ,and that the test is to be made at the 2% significance level.

What is the value of the test statistic, z?

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Question 9 of 20

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A researcher wants to test if the mean price of houses in an area is greater than $145,000. A random sample of 36 houses selected from the area produces a mean price of $149,100. Assume that

and that the test is to be made at the 2% significance level.

What is the value of the test statistic, z?

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Question 10 of 20

1.0 Points

A researcher wants to test if the elementary school children spend less than 30 minutes per day on homework. A random sample of 61 children from the school shows that they spend an average of 25.9 minutes per day on homework. Assume that

minutes, and that the test is to be made at the 1% significance level.

Should you reject or fail to reject the null hypothesis in this test?

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Question 11 of 20

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In a hypothesis test with hypotheses Ho: Mu LE 54 and H1: Mu > 54, a random sample of 24 elements selected from the population produced a mean of 59.5 and a standard deviation of 14.3. The test is to be made at the 2.5% significance level. Assume the population is normally distributed.

What is the critical value of t?

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Question 12 of 20

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In a hypothesis test with hypotheses Ho: Mu LE 54 and H1: Mu >54, a random sample of 24 elements selected from the population produced a mean of 59.5 and a standard deviation of 14.3. The test is to be made at the 2.5% significance level. Assume the population is normally distributed.

What is the value of the test statistic, t?

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Question 13 of 20

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In a hypothesis test with hypotheses Ho: Mu GE 74 and H1: Mu < 74, a random sample of 20 elements selected from the population produced a mean of 69.0 and a standard deviation of 13.7. The significance level is 1%. Assume the population is normally distributed.

What is the critical value of t?

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Question 14 of 20

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Question 15 of 20

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A company that manufactures light bulbs claims that its light bulbs last an average of 1150 hours. A sample of 25 light bulbs manufactured by this company gave a mean life of 1094 hours and a standard deviation of 174 hours. A consumer group wants to test the hypothesis that the mean life of light bulbs produced by this company is less than 1150 hours. The significance level is 5%. Assume the population is normally distributed.

What is the critical value of t?

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Question 16 of 20

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Question 17 of 20

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In a hypothesis test with hypotheses Ho: p LE .39 and H1: p > .39, a random sample of size 471 produced a sample proportion of .4475. The test is to be made at the 1% significance level.

What is the critical value of z?

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Question 18 of 20

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In a hypothesis test with hypotheses Ho: p GE .76 and H1: p < .76, a random sample of size 953 produced a sample proportion of .7530. The test is to be made at the 5% significance level.

Should you reject or fail to reject the null hypothesis in this test?

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Question 19 of 20

1.0 Points

In a hypothesis test with hypotheses Ho: p GE .31 and H1: p < .31, a random sample of size 538 produced a sample proportion of .2855. The test is to be made at the 1% significance level.

What is the value of the test statistic, z?