Which of the following is an appropriate test to compare a sample mean with a population...
Homework Answers
If we have sample data and compare a sample mean with population mean then we take t test
Answer is t test
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Which of the following is an appropriate test to compare a sample
mean with a population...
Which of the following is the appropriate test of significance when we have a single value...
Which of the following is the appropriate test of significance when we have a single value we want to compare to a population mean? a. Spearman's Rho b. Bonferroni c. z score d. Cramer's Phi
Suppose we want to conduct a hypothesis test relating to the mean of a certain population...
Suppose we want to conduct a hypothesis test relating to the mean of a certain population where the population variance is unknown. To conduct the test, we collect data from a random sample of 27 members of the population. a. Explain why we should use a t-test instead of a z-test in this situation. What is the distribution of the t-statistic in this case? (Recall that the t-statistic is defined as ? = ?̅−? ?/√? ) b. Find the following...
State which hypothesis test would be appropriate under the following conditions. Our data set’s mean is...
State which hypothesis test would be appropriate under the following conditions. Our data set’s mean is being compared to a fixed or assumed value. The data set comes from a population that has a normal distribution and we know the population standard deviation. Group of answer choices 1--- z-test 2---- Mann-Whitney U Test 3----- 2-sample t-test with unequal variances 4--- t-test 5---- 2-sample t-test with equal variances I just need to know which of the 5 is the right answer....
Your sample: 13, 15, 16, 18, 51, 12, 65, 25 Now compute the appropriate t-test on...
Your sample: 13, 15, 16, 18, 51, 12, 65, 25 Now compute the appropriate t-test on the data from the previous problem, with the assumption that you only have population information regarding the mean of 29.23 and will have to estimate the standard deviation of the population because it is unknown. Use the computational formula for estimated population standard deviation when computing the standard deviation. Show your plugged-in formula of t.
Suppose that you wish to test a claim about a population mean. Which distribution should be...
Suppose that you wish to test a claim about a population mean. Which distribution should be used given that the sample is a simple random sample, σ is not known, n = 15 and the population is normally distributed? The z-distribution The t-distribution The Chi-Square Distribution The F-distribution A hypothesis in statistics is a claim or a statement about a sample statistic population parameter legitimate inheritance weather conditions A market researcher selects every 40th student from a group of 500...
Question Which of the following is true about the one sample z-test and one sample t-test:...
Question Which of the following is true about the one sample z-test and one sample t-test: A. for a t-test, the population mean and standard deviation are needed for a t-test only the sample mean is needed. for a z-test the population mean and standard deviation are needed. The z and t-tests are identical except for the size of the sample used. The z and t-tests are identical in terms of the amount of information needed. B. C. D. E....
Imagine you want to compare the mean of a sample (Xbar = 10, sample standard deviation...
Imagine you want to compare the mean of a sample (Xbar = 10, sample standard deviation = 20, N = 100) to a known population mean (mu = 13, population standard deviation unknown) using the single-sample t-test. What is the value of Cohen's d? 0.15 0.20 0.50 0.80
1) Identify the rejection point(s) for the test of the following hypothesis: H0: mean = 10,...
1) Identify the rejection point(s) for the test of the following hypothesis: H0: mean = 10, Ha: mean != 10 Conducted on a sample size of 15, on a normally distributed population with unknown population variance, and a desired Type1 error probability (alpha) of 0.05. Hint: use the appropriate statistical function in your spreadsheet to determine the rejection point. Z test with rejection points -1.64 and +1.64 Z test with rejection points -1.96 and +1.96 t-test with degrees of freedom=14,...
a. ULP b. Paired t-test d. 1 sample 20 10. You are asked to compare a...
a. ULP b. Paired t-test d. 1 sample 20 10. You are asked to compare a population mean to a sample mean and have all the individual data for a population, what analysis do you run? a. Independent t-test b. Paired t-test c. 1 sample t-test d. 1 sample z-test Questions 11-15 refer to the following Dr. Rueckert wants to know if there is a relationship to the amount of males and females that are compared to the rest of...
Which of the following is a key difference between the t test and the z-test? a....
Which of the following is a key difference between the t test and the z-test? a. The t test requires the knowledge of the true population mean. b. The t test uses the sample variance in place of the population variance. c. The t test computes the standard error using the population standard deviation. d. All of these are differences between t and z.
Question Which of the following is true about the one sample z-test and one sample t-test: A. for a t-test, the population mean and standard deviation are needed for a t-test only the sample mean is needed. for a z-test the population mean and standard deviation are needed. The z and t-tests are identical except for the size of the sample used. The z and t-tests are identical in terms of the amount of information needed. B. C. D. E....
a. ULP b. Paired t-test d. 1 sample 20 10. You are asked to compare a population mean to a sample mean and have all the individual data for a population, what analysis do you run? a. Independent t-test b. Paired t-test c. 1 sample t-test d. 1 sample z-test Questions 11-15 refer to the following Dr. Rueckert wants to know if there is a relationship to the amount of males and females that are compared to the rest of...
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