The p-value is to t-obtained; as alpha is to t-critical. OTrue O False
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- For 7 and 8, use the following information: We run a regression test, regressing test score on hours studied, and find out that b. = 45 while b₁ = 10. 7. In words, interpret bo. 8. In words, interpret b₁. Which test would you use to answer each of the following research questions? Specify the test type as well as the null and alternative hypotheses. 9. Does life expectancy (in years) differ between smokers and non-smokers? 10. Is there a relationship between US News college ranking (eg 1, 2, 3, 4...) and starting salary after graduation (in dollars)? 11. Is a students GPA when they graduate high school related to their GPA when they graduate college? 12. Is there a relationship between eating breakfast (eating breakfast vs. not eating breakfast) and weight (overweight, underweight, or healthy weight)?The result of an idependent measures study reports as t(22)=2.12p<.05, two tails. For this study, what t values formed the boundaries for the critical region? Note: Make sure that you include the+- sign to your answer.It has long been accepted by the general public that normal body temperature is 98.6 degrees. A group of 20 randomly selected adults was selected and their body temperatures were taken. Of them, 14 had a body temperature of less than 98.6, 3 had body temperatures of 98.6 and 3 had body temperatures of more than 98.6 degrees. At α =0.05, test the claim that the median body temperature is less than 98.6 degrees. A. Determine the test statistic. B. Determine the critical value.
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- There is always a claim that after measles immunization, children develop hightemperature. A researcher at IHK was interested in finding out the validity of thisclaim. On a designated immunization day, he randomly selected 5 children (withnormal temperature before being immunization). He measured their temperatureagain 6 hours after being immunized against measles. The following were theirtemperatures in (0C): 37.7, 36.7, 39.3, 38.2 and 35.9.a) Is there evidence that the measles vaccine leads to increase in a child’s temperaturefrom the normal temperature of 36.7 (0C)?The research hypothesis posits that the treatment association between two variables will be greater than zero (H1: rxy > 0). What would be concluded for r(29) = .267, p > .05?If the slope of a regression line (b1) is 1.5, then a) for every unit of change in x, there is a change of 1.5 units in y b) for every unit of change in y, there is a change of 1.5 in x. c) the score of each case is 1.5 times higher on yt han on x d)y causes X
- A researcher tested the relationship between gender and support for assisted suicide (“death with dignity”) and found a Cramer’s V of 0.45. This relationship is strong weak positive significant but not importantA researcher selected a sample of 268 former student-athletes from a list of graduates of a large university. A total of 14% of the sample of athletes had earned graduate degrees as compared to 17% of all graduates. What is the Z obtained value?Use the following linear regression equation to answer the questions. x1 = 2.0 + 3.6x2 – 7.8x3 + 2.1x4 a) Suppose x3 and x4 were held at fixed but arbitrary values and x2 increased by 1 unit. What would be the corresponding change in x1?b) Suppose x2 increased by 2 units. What would be the expected change in x1?c) Suppose x2 decreased by 4 units. What would be the expected change in x1?