Homework Answers
TOPIC:Test for the population proportion.
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8. (5 pts) A random sample of 300 units contains 18 nonconforming units. Test the hypothesis...
alpha: 0.01 4. (16 pts) In a random sample of 200 men, 130 said they used...
alpha: 0.01
4. (16 pts) In a random sample of 200 men, 130 said they used seat belts. In a random sample of 300 women, 63 said they used seat belts. Test the claim that men are more safety-conscious than women, at. (a) State the null and alternative hypotheses and identify the claim to test. (b) Using level of significance , find the test statistic and the critical value, and make your conclusion about the hypothesis test. (c) Find the...
9. Medicare would like to test the hypothesis that the average monthly rate for a one-...
9. Medicare would like to test the hypothesis that the average monthly rate for a one- bedroom assisted-living facility is equal to $3,300. A random sample of 12 assisted-living facilities had an average rate of $3,690 per month. The standard deviation for this sample was $530. Medicare would like to set a = 0.05. +$3,300 and it is a Note: Two hypotheses for the test are H :u=$3,300 vs H : two-tailed test. Calculate the test statistics • find the...
Perform hypothesis tests on the following five problems. Assume that a simple random sample has been...
Perform hypothesis tests on the following five problems. Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Identify the hypotheses, test statistic, critical value(s), decision about the null hypothesis, and final conclusion. Claim: The mean IQ score of statistics professors is greater than 135. Sample data: n= 25, ?̅ = 137, s =15. The significance level is α = 0.05.
A random sample is taken from a normal population. Do the hypothesis test to determine if...
A random sample is taken from a normal population. Do the hypothesis test to determine if there is evidence that the population standard deviation is greater than 5. Use a level of significance of α = 0.05. n = 25 xbar = 68.7 s = 6.2 Use the appropriate notation to show the hypotheses. H0: H1: The critical value is _________ = _______________________ The test statistic is __________= ________________________ The p value is __________________________________
Compute the test value. Do we reject the null hypothesis? A random sample of second-round golf...
Compute the test value. Do we reject the null
hypothesis?
A random sample of second-round golf scores from a major tournament is listed below. At a 0.05, is there sufficient evidence to conclude that the population variance er eeds 9? 73 75 77 79 71 66 68 69 70 Download data Part 1 State the hypotheses and identify the claim with the correct hypothesis. not claim claim This hypothesis test is a one-taled test. Part 2 Find the critical value....
Use the given claim to identify the Null Hypothesis, the Alternative Hypothesis, test statistics, P-value or...
Use the given claim to identify the Null Hypothesis, the Alternative Hypothesis, test statistics, P-value or Critical Values, then state the conclusion about the null hypothesis as well as the final conclusion that addresses the original claim The Brazil vending machine dispenses coffee, and a sample random sample of 27 filled cups have contents with a mean of 7.14 oz. and a standard deviation of 0.17 oz. Use a 0.05 significance level to test the claim that the machine dispenses...
This Test: 101 pts po Test the hypotheses shown below for a random sample with s2...
This Test: 101 pts po Test the hypotheses shown below for a random sample with s2 = 166 and n=25 at the 5% significance level. Ho: os 100 H:07 > 100 Click the icon to view the upper critical values of Chi-square distribution table. For this test at the significance level a with sample variance s?, hypothesized variance oầ, sample size n and critical value xê-la X-11-6, 0r X-1 1/2 and x2 -1.1-a72, what is the form of the decision...
5. [18 points] Consider the Minitab output shown below. Test of μ = 100 vs >...
5. [18 points] Consider the Minitab output shown below. Test of μ = 100 vs > 100 The assumed standard deviation 2.4 95% Lower Bound 100.770 Mean SE Mean 101.560 3.25 25 a. Fill in the missing values in the output. Can the null hypothesis be rejected at the 0.0s level? Why? b. Is this a one-sided or a two-sided test? C. If the hypotheses had been Ho: μ = 99 versus H : μ > 99, would you reject...
15. A random sample is taken from a normal population. Do the hypothesis test to determine...
15. A random sample is taken from a normal population. Do the hypothesis test to determine if there is evidence that the population standard deviation is greater than 5. Use a level of significance of a = 0.05. n = 25 Ž = 68.7 = 6.2 S= a. Use the appropriate notation to show the hypotheses. Ho: Hi: b. The critical value is c. The test statistic is d. The p value is
Ulermined by the sample size. Question 18 1 pts and standard deviation 0 = A certain...
Ulermined by the sample size. Question 18 1 pts and standard deviation 0 = A certain population follows a normal distribution with mean 2.5. You collect data and test the hypotheses Họ: H = 1, H:| → 1. You obtain a two-sided P-value of 0.03. Which of the following is true? The null hypothesis will be accepted at a - .05, The null hypothesis will be rejected at both a- .05 and a-.01. The nuli hypothesis will be rejected at...
alpha: 0.01
4. (16 pts) In a random sample of 200 men, 130 said they used seat belts. In a random sample of 300 women, 63 said they used seat belts. Test the claim that men are more safety-conscious than women, at. (a) State the null and alternative hypotheses and identify the claim to test. (b) Using level of significance , find the test statistic and the critical value, and make your conclusion about the hypothesis test. (c) Find the...
9. Medicare would like to test the hypothesis that the average monthly rate for a one- bedroom assisted-living facility is equal to $3,300. A random sample of 12 assisted-living facilities had an average rate of $3,690 per month. The standard deviation for this sample was $530. Medicare would like to set a = 0.05. +$3,300 and it is a Note: Two hypotheses for the test are H :u=$3,300 vs H : two-tailed test. Calculate the test statistics • find the...
Compute the test value. Do we reject the null
hypothesis?
A random sample of second-round golf scores from a major tournament is listed below. At a 0.05, is there sufficient evidence to conclude that the population variance er eeds 9? 73 75 77 79 71 66 68 69 70 Download data Part 1 State the hypotheses and identify the claim with the correct hypothesis. not claim claim This hypothesis test is a one-taled test. Part 2 Find the critical value....
Use the given claim to identify the Null Hypothesis, the Alternative Hypothesis, test statistics, P-value or Critical Values, then state the conclusion about the null hypothesis as well as the final conclusion that addresses the original claim The Brazil vending machine dispenses coffee, and a sample random sample of 27 filled cups have contents with a mean of 7.14 oz. and a standard deviation of 0.17 oz. Use a 0.05 significance level to test the claim that the machine dispenses...
This Test: 101 pts po Test the hypotheses shown below for a random sample with s2 = 166 and n=25 at the 5% significance level. Ho: os 100 H:07 > 100 Click the icon to view the upper critical values of Chi-square distribution table. For this test at the significance level a with sample variance s?, hypothesized variance oầ, sample size n and critical value xê-la X-11-6, 0r X-1 1/2 and x2 -1.1-a72, what is the form of the decision...
5. [18 points] Consider the Minitab output shown below. Test of μ = 100 vs > 100 The assumed standard deviation 2.4 95% Lower Bound 100.770 Mean SE Mean 101.560 3.25 25 a. Fill in the missing values in the output. Can the null hypothesis be rejected at the 0.0s level? Why? b. Is this a one-sided or a two-sided test? C. If the hypotheses had been Ho: μ = 99 versus H : μ > 99, would you reject...
15. A random sample is taken from a normal population. Do the hypothesis test to determine if there is evidence that the population standard deviation is greater than 5. Use a level of significance of a = 0.05. n = 25 Ž = 68.7 = 6.2 S= a. Use the appropriate notation to show the hypotheses. Ho: Hi: b. The critical value is c. The test statistic is d. The p value is
Ulermined by the sample size. Question 18 1 pts and standard deviation 0 = A certain population follows a normal distribution with mean 2.5. You collect data and test the hypotheses Họ: H = 1, H:| → 1. You obtain a two-sided P-value of 0.03. Which of the following is true? The null hypothesis will be accepted at a - .05, The null hypothesis will be rejected at both a- .05 and a-.01. The nuli hypothesis will be rejected at...
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