True or false: Suppose a sample size of 103 was used to conduct a left tailed...
True or false:
Suppose a sample size of 103 was used to conduct a left tailed hypothesis test for a single population mean. The null hypothesis was H0: M= 22 and the p-value was 0.04. Then there is a 4% chance that the population mean is equal to 22.
Homework Answers
This statement is False. The p - value idicates that there is 4% chance of getting the sample mean as low as sample mean assuming that population mean is 22.
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True or false:
Suppose a sample size of 103 was used to conduct a left tailed...
Answer the following True or False: Suppose a sample size of 87 was used to conduct...
Answer the following True or False: Suppose a sample size of 87 was used to conduct a right tailed hypothesis test for a single population mean. The null hypothesis was H0: μμ = 45 and the sample mean was 50 and the p-value was 0.03. Then there is a 3% chance that 87 randomly selected individuals from a population with a mean of 45 and the same standard deviation would have a sample mean greater than 50. false true
A sample of size n=35 was used to conduct a test of the null hypothesis H0:...
A sample of size n=35 was used to conduct a test of the null hypothesis H0: μ = 500. The value of the test statistic is 1.48. What is the p-value of the test statistic? Include 4 decimal places in your answer.
A sample of size 100, taken from a population whose standard deviation is known to be...
A sample of size 100, taken from a population whose standard deviation is known to be 8.90, has a sample mean of 51.16. Suppose that we have adopted the null hypothesis that the actual population mean is greater than or equal to 52, that is, H0 is that μ ≥ 52 and we want to test the alternative hypothesis, H1, that μ < 52, with level of significance α = 0.05. a) What type of test would be appropriate in...
true or false 11. When the level of confidence and the sample size remain the same,...
true or false
11. When the level of confidence and the sample size remain the same, a confidence interval for a population mean y will be narrower, when the sample standard deviation s is smaller than when s is larger. Chapter 10 12. The closer is the hypothesized mean is from the actual mean the higher is the power of the test. 13. The manager of the quality department for a tire manufacturing company wants to know the average tensile...
2. (2 True-False. Just say whether each statement is True or False – no need to justify...
2. (2 True-False. Just say whether each statement is True or False – no need to justify your answer. 1. If the number of trials in the binomial distribution increases by 1 (and P equals .50), the probability of getting either of the most extreme possible outcomes (that is, 0 or N) is cut in half. 2. If the number of trials in the binomial distribution increases by 1 (and P does not equal .50), the probability of getting either of...
A sample of 31 observations is selected from a normal population. The sample mean is 23,...
A sample of 31 observations is selected from a normal population. The sample mean is 23, and the population standard deviation is 2. Conduct the following test of hypothesis using the 0.10 significance level. H0 : μ ≤ 22 H1 : μ > 22 A.) Is this a one- or two-tailed test? B.) What is the decision rule? C.) What is the value of the test statistic? (Round your answer to 2 decimal places.) D.) What is your decision regarding...
The null and alternative hypotheses are given. Determine whether the hypothesis test is left-tailed, right-tailed, or...
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The null and alternative hypotheses are given. Determine whether the hypothesis test is left-tailed, right-tailed, or...
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Suppose a quantitative variable is normally distributed in the population. We conduct a t-test for a...
Suppose a quantitative variable is normally distributed in the population. We conduct a t-test for a population mean with the following hypotheses. The null hypothesis is equal to 50, the alternative hypothesis is not equal to 50. A sample size of 30 has a t-statistic of -2.43. Find the corresponding P-value
8. Degrees of freedom for chi-squared tests are determined by sample size. True or False 7....
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true or false
11. When the level of confidence and the sample size remain the same, a confidence interval for a population mean y will be narrower, when the sample standard deviation s is smaller than when s is larger. Chapter 10 12. The closer is the hypothesized mean is from the actual mean the higher is the power of the test. 13. The manager of the quality department for a tire manufacturing company wants to know the average tensile...
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