If we have sample data and compare a sample mean with population mean then we take t test
Answer is t test
Which of the following is an appropriate test to compare a sample mean with a population...
Imagine that you wish to compare a sample mean to a population mean to decide if you can reject the hypothesis that µ1= µ2. Assume that you have the following information: N = 45, M = 10, σ (sigma) = 2, µ = µM= 8. Which of the following types of tests should you use? Group of answer choices A) A z test B) A one-sample t test C)A paired-samples t test D) An independent-samples t test E) None of...
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 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...
When comparing differences between groups, which of the following is the appropriate test? a. t test or ANOVA b. Pearson's c. Spearman's Rho d. Wilcoxan
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....
Suppose that we want to test the null hypothesis that the mean of population 1 is equal to the mean of population 2. We select a random sample from population 1 and a random sample from population 2, and these two samples are independent. Circle the TRUE statements. A. We need to perform a two-sided test. B. If we know the variance of each population, even if they are different, we can use the Z test. That is, the test...
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.
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....
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...
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