When conducting a independant measures t test, the null hypothesis states the difference between the population mean is ? __________
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When conducting a independant measures t test, the null hypothesis states the difference between the population
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- B. Determine the test statistic. _____ C. Determine the P-value. _____ D. State the final conclusion that addresses the original claim. (fail/ fail to reject) H0. There is (suffecient/ not suffecient) evidence to conclude that the original claim that the mean of the population of estimates is 60 seconds (is/ is not) correct. It (appears/ does not appear) that, as a group, the students are reasonably good at estimatingA set of exam scores is normally distributed with a mean = 72 and standard deviation = 4.Use the Empirical Rule to complete the following sentences.68% of the scores are between ____ and ______.95% of the scores are between ______and _________.99.7% of the scores are between _____ and ______.If you have a research scenario in which you know both the population mean and the population standard deviation, then you would use the one sample z test. True O False
- A fitness trainer is interested in investigating whether ethnicity and the first exercise activity that members engage in are dependent. The table below shows the results of the trainer's observation of randomly selected members. Frequencies of Ethnicity and Exercise Activity Weight Machines White Hispanic Black Other Cardio 84 84 68 48 98 97 51 70 O Homogeneity O Independence Free Weights 81 98 69 41 What can be concluded at the α = 0.05 significance level? a. What is the correct statistical test to use? O Goodness-of-Fit Paired t-test b. What are the null and alternative hypotheses? Ho: O Ethnicity and first exercise activity are dependent. O Ethnicity and first exercise activity are independent. O The distribution of first exercise activity is not the same for each ethnicity. O The distribution of first exercise activity is the same for each ethnicity. H₁: O The distribution of first exercise activity is the same for each ethnicity. O Ethnicity and first exercise activity are…The test statistic is _______________ (Round to two decimal places as needed.) The P-value is ______________________ (Round to three decimal places as needed.) State the conclusion for the test. a. Reject the null hypothesis.There is sufficient evidence to support the claim that mean of weight of the 1988 population is less than the mean weight of the 2012 population. b. Reject the null hypothesis.There is not sufficient evidence to support the claim that mean of weight of the 1988 population is less than the mean weight of the 2012 population. c. Fail to reject the null hypothesis.There is sufficient evidence to support the claim that mean of weight of the 1988 population is less than the mean weight of the 2012 population. d. Fail to reject the null hypothesis.There is not sufficient evidence to support the claim that mean of weight of the 1988 population is less than the mean weight of the 2012 population. b. Construct a confidence interval appropriate for the…Need help with this question. Thank you :)
- 13.20 Pls help me with this question with accurate answers pls I am so much in need of help all the answers on web are all wrong I appreciate it and will leave thumbs up for uESP People who claim to “have ESP” participate in a screening test in which they have to guess which of sev-eral images someone is thinking of. You and a friend both took the test. You scored 2 standard deviations above themean, and your friend scored 1 standard deviation belowthe mean. The researchers offer everyone the opportunityto take a retest.a) Should you choose to take this retest? Explain.b) Now explain to your friend what his decision shouldbe and why.Indicate the type of hypothesus each of the following are by indicating directional or non-directional AND null or alternative. mean vocabulary assessment = mean reading assessment (null/alternative) (directional/non-directional) Eating jelly beans causes changes in the amount of cavities in adults and children (null/alternative) (directional/non-directional) More coffee is consumed in Italy than in Canada (null/alternative) (directional/non-directional) Doing practical activites has a negative relationship or no relationship with research methods comprehension (null/alternative) (directional/non-directional)
- The state of CT claims that the average time on death row is 15 years. A random survey of 75 death row inmates revealed that the average length of time on death row is 16.6 years with a standard deviation of 5.8 years. Conduct a hypothesis to test the state of CT's claim. t test mean two tail test p value = ____________ What is the decision?_________ If one concludes that there is NO difference between the sample mean and the population mean, then: a) an alpha error has been committed b) the null hypothesis has been rejected c)there must have been no bias in the sample d) the null hypothesis has been retained10
