By selecting a larger alpha level, a researcher is ______. a. attempting to make it easier to reject H0 b. better able to detect a treatment effect c. increasing the risk of a Type I error d. All of the other options are the result of selecting a larger alpha level.
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5. By selecting a larger alpha level, a researcher is ______.
a. attempting to make it easier to reject H0
b. better able to detect a treatment effect
c. increasing the risk of a Type I error
d. All of the other options are the result of selecting a larger alpha level.
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- Consider the following: In general, when people diet they typically lose 10 lbs. (?σ = 2). A random sample of 16 people on the keto diet lost 15 lbs. Do people on the keto diet lose more or less weight than people on diets in general? 4. What is the research hypothesis? a) Weight loss in the keto diet sample does not differ from weight loss in the population of dieters in general (H1: X-bar = Mu) b)Weight loss in the keto diet sample does differ from weight loss in the population of dieters in general (H1: X-bar = Mu) c) Weight loss in the keto diet sample does not differ from weight loss in the population of dieters in general (H1: X-bar does not equal Mu) d) Weight loss in the keto diet sample does differ from weight loss in the population of dieters in general (H1: X-bar does not equal Mu)In general, changing the alpha level from .05 to .01 will… Select one: a. increase the likelihood of rejecting the Ho, and increase the risk of a Type I error b. decrease the likelihood of rejecting the Ho, and increase the risk of a Type I error c. increase the likelihood of rejecting the Ho, and decrease the risk of a Type II error d. decrease the likelihood of rejecting the Ho, and increase the risk of a Type II errorWhat statistical test would you use for each of the following scenarios? What would you set your alpha-level at? Sarah wants to know how gender impacts heart rate recovery after a maximal exercise test. In order to test this, she has both male and female athletes come into her lab and she measures both resting heart rate before the exercise test and heart rate immediately, 10 minutes, 20 minutes and 30 minutes following the exercise test. In order for her to determine whether heart rate differs pre-post exercise between males and females what statistical test might she use? Why?
- A doctor would like to evaluate whether flu-frequency is different among patients of various ages. He groups his most recent 12 patients into four groups according to age (pediatric, young adult, older adult, senior), and counts the frequency of their flu-related visits. Below is his data. Test the hypothesis that flu frequency is different among pediatric, adult, older adult, and senior patients using an alpha level of .01. Pediatric. Young Adult. Older Adult. Senior 6 2 4 7 4 1 0 9 5 0 0 12 g. What does your decision mean? h. Paste your SPSS output here: i. Explain how the Sig. value in your SPSS output leads you to…For a set alpha level of .05, a predictor that has a p-value less than or equal to .05 suggests that variations in the predictor's value are related to changes in the outcome (response) variable. True or FalseA researcher first decided to conduct a two-tailed hypothesis test, with alpha = .05, but then decided she wants to reduce the risk of a Type I error. What should she do? a. Calculate her statistics more carefully. b. Decrease alpha to .01 c. Increase alpha to .15 e. Conduct a three-tailed test