QUESTION 36 Consider a sample with M= 16 and s O a. The treatment has a large effect size (Cohen's d). = 25. A researcher is testing the null hypothesis that u= 20. Which statement is correct? O b. The treatment has a small effect size (Cohen's d). O C. The treatment has a statistically significant effect. O d. The treatment has a moderate effect size (Cohen's d).
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- If you have a hypothesis test with alpha = 0.09, which of the following P-Values does NOT imply statistical significance? 0.023 0.07 0.163 0.055Which of the following is the correct null hypothesis for a dependent samples t test? a. MD = 0 c. µ1 = µ2 b. µD = 0 d. M1 = M2If a researcher obtains a sample mean of M= 54, from a population with u = 46. With a given alpha, which combination of factors is most likely to result in rejecting the null hypothesis?
- A researcher conducts a hypothesis test using a sample of n = 20 with M = 34 and s 2 = 36 from an unknown population. What is the df value for the t statistic?A researcher conducts an independent samples t-test comparing two treatments, and reports the following data: Sample 1 Sample 2 M = 8 M = 18 SS = 100 SS = 50 n = 5 n = 5 Which of the following correctly lists the calculated test statistic value along with the appropriate conclusion using an alpha level of .05, two-tails? a. t = 3.65, Fail to reject Ho b. t = 3.65, Reject Ho c. t = 2.308, Fail to reject Ho d. t = 2.308, Reject Ho A researcher wants to know if there is a relationship between gender and the likelihood of being a psychology major. A sample of n=200 participants is surveyed and the observed results are presented in the table below. Male Female Yes 20 70 No 80 30 Which of the following lists the appropriate statistical analysis for this question and data? a. independent-samples t-test b. repeated-measures t-test c. Chi-square test d. ANOVAA random sample of 10 professional athletes produced the following data where X is the number of endorsements the player has and Y is the amount of money made (in millions of dollars). Use the 4 steps of hypothesis testing to see if the prediction is significant with a criteria of alpha=.05 on the following data. x y 0 2 3 8 2 7 1 3 5 13 5 12 4 9 3 9 0 3 4 10
- If, in a sample of n=20 selected from a normal population, X=59and S=12, what are the critical values of t if the level of significance, α, is 0.05, the null hypothesis, H0, is μ=50, and the alternative hypothesis, H1, is μ≠50? The critical values of t areFor which of the given P-values would the null hypothesis be rejected when performing a level 0.05 test? 0.001 0.021 0.078 0.047 0.148Based on information from a previous study, r1 = 37 people out of a random sample of n1 = 97 adult Americans who did not attend college believe in extraterrestrials. However, out of a random sample of n2 = 97 adult Americans who did attend college, r2 = 46 claim that they believe in extraterrestrials. Does this indicate that the proportion of people who attended college and who believe in extraterrestrials is higher than the proportion who did not attend college? Use α = 0.01. What is the value of the sample test statistic? (Test the difference p1 − p2. Do not use rounded values. Round your final answer to two decimal places.)(c) Find (or estimate) the P-value. (Round your answer to four decimal places.)
- Based on information from a previous study, r1 = 37 people out of a random sample of n1 = 97 adult Americans who did not attend college believe in extraterrestrials. However, out of a random sample of n2 = 97 adult Americans who did attend college, r2 = 46 claim that they believe in extraterrestrials. Does this indicate that the proportion of people who attended college and who believe in extraterrestrials is higher than the proportion who did not attend college? Use α = 0.01. (a) What is the level of significance? What is the value of the sample test statistic? (Test the difference p1 − p2. Do not use rounded values. Round your final answer to two decimal places.)(c) Find (or estimate) the P-value. (Round your answer to four decimal places.)Which pair of the hypotheses would be correct for the following claim: Claim: The percentage of cars sold with manual transmission is 2018 (group 1) is lower than the percentage of cars sold with manual transmission in 2010 (group 2) A. H0 :p1 −p2 =0andH1 :p1 −p2 <0 B. H0 :p1 −p2 <0andH1 :p1 −p2 =0 C. H0 :p1 −p2 =0andH1 :p1 −p2 ̸=0 D. H0 :p1 −p2 ̸=0andH1 :p1 −p2 =0 E. H0 :p1 −p2 =0andH1 :p1 −p2 >0 F. H0 :p1 −p2 >0andH1 :p1 −p2 =0Suppose we are testing the null hypothesis H 0: = 20 and the alternative H a: 20, for a Normal population with = 14. A random sample of 25 observations is drawn from the population, and we find that the sample mean of these observations is = 17.6. The P-value is closest to: a. 0.0668. b. .391. c. 0.0027. d. .247.