Suppose in a hypothesis test you fail to reject the null hypothesis at the 5% significance...
Suppose in a hypothesis test you fail to reject the null hypothesis at the 5% significance level. Which one of the following statements is true in light of this information?
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Suppose in a hypothesis test you fail to reject the null
hypothesis at the 5% significance...
1. You want to test whether you can reject the null hypothesis that a population mean...
1. You want to test whether you can reject the null hypothesis that a population mean is greater than or equal to 10. To do this, you collect a random sample of size 500 from the population, and you calculate that the sample mean and sample standard deviation are 8.6 and s, respectively. Which of the following is true? a. If s is any value between 11 and 13, you can reject the null hypothesis at the 5% significance level....
Question 5 2 pts Which of the following statements is true? (a) we reject a null...
Question 5 2 pts Which of the following statements is true? (a) we reject a null hypothesis if the p-value of the test is smaller than the level of the significance a. (b) we accept a null hypothesis if the p-value of the test is smaller than the level of the significance a. (c) we reject a null hypothesis if the p-value of the test is larger than the level of the significance a. . (a) . (b) . (c)
A consumer advocate conducted a hypothesis test at the 5% significance level to determine if the...
A consumer advocate conducted a hypothesis test at the 5% significance level to determine if the mean level of impurities in a bottled water product is higher than themanufacturer’s advertised value of 20 parts per million. The advocate collected 25samples, measured the impurities, calculated a test statistic and obtained a p-value of 0.0423. Which of the following correctly states the advocate’s conclusion and reason for the conclusion? A. Reject the null hypothesis because the p-value is smaller than the significance...
You are asked to conduct a simulation and run a hypothesis test at a significance level...
You are asked to conduct a simulation and run a hypothesis test at a significance level of 0.10. Based on your simulation, you find that the p-value is 0.051. What does this mean for your hypothesis test? 1. Since the p-value is greater than the significance level, you must fail to reject the null hypothesis. 2. Since the p-value is less than the significance level, you must fail to reject the null hypothesis. 3. Since the p-value is less than...
Suppose I’m trying to determine whether to reject or fail to reject the null hypothesis that...
Suppose I’m trying to determine whether to reject or fail to reject the null hypothesis that the average starting salary of college graduates is at least $45,000. I’ve also taken a survey of size 16 and have found the sample mean to be $40,000 and the sample standard deviation to be 10,000. My alpha value is .05. 1. H0: HA: pop. mean < 45,000 2. Write down the probability of Type I Error 3. Write down and compute test statistic...
(a) Suppose the null and alternative hypothesis of a test are: H0: μ= 9.7 H1: μ...
(a) Suppose the null and alternative hypothesis of a test are: H0: μ= 9.7 H1: μ >9.7 Then the test is: left-tailed two-tailed right-tailed (b) If you conduct a hypothesis test at the 0.02 significance level and calculate a P-value of 0.07, then what should your decision be? Fail to reject H0 Reject H0 Not enough information is given to make a decision
Assume a researcher published a paper rejecting a null hypothesis at the 1% level of significance...
Assume a researcher published a paper rejecting a null hypothesis at the 1% level of significance (that is, α = 0.01), which of the following statements is true? The finding may not be significant since it was not tested at an alpha level of 0.05 You cannot make any assumptions about the alpha at the 5% level without first calculating the value from the published data It is 5 times as likely the null hypothesis would be accepted at the...
A hypothesis test is conducted to test the null hypothesis that the mean is less than...
A hypothesis test is conducted to test the null hypothesis that the mean is less than 12. Use a 0.01 level of significance. What type of test is this? Right tail Two tail Left tail What is the critical value? 2.33 -2.33 1.78 correct answer is not given Suppose the test statistic was -2.50 What is the conclusion? Fail to reject Ho. There is not sufficent evidence to support the claim that the mean is less than 12. Reject Ho....
A Type II error occurs in hypothesis testing when we _____________________________. fail to reject the null hypothesis...
A Type II error occurs in hypothesis testing when we _____________________________. fail to reject the null hypothesis and the null hypothesis is not true reject the null hypothesis and the null hypothesis is true fail to reject the alternative hypothesis and the alternative hypothesis is not true reject the alternative hypothesis and the alternative hypothesis is true
37. Use the following information for questions 37-38: Suppose you conduct a hypothesis test to determine...
37. Use the following information for questions 37-38: Suppose you conduct a hypothesis test to determine whether or not the average age difference between married couples is less than 5 years. You conduct this test at the 0.10 significance level and come to the conclusion that 0.01 < p-value < 0.02. What is the correct decision? a. Fail to Reject the Null Hypothesis b. Reject the Null Hypothesis c. Accept the Null Hypothesis d. Accept the Alternative Hypothesis
Question 5 2 pts Which of the following statements is true? (a) we reject a null hypothesis if the p-value of the test is smaller than the level of the significance a. (b) we accept a null hypothesis if the p-value of the test is smaller than the level of the significance a. (c) we reject a null hypothesis if the p-value of the test is larger than the level of the significance a. . (a) . (b) . (c)
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