Student1Lv1

12 Apr 2023

36. A Clinical psychologist tests whether changing to a more nutritious diet will influence happiness levels. What is the research hypothesis?

a.    The change in diet will have no impact on happiness levels

b.    The change in diet will improve happiness levels

c.     The change in diet will decrease happiness levels

d.    The change in diet will change happiness levels

 

37. In statistics, the symbol μM is the:

a.    The sample mean

b.    The population mean

c.     The mean of the distribution of sample means

d.    The population standard deviation

 

38. The "cut-off sample score on the comparison distribution" is the point at which:

a.    The research hypothesis is rejected

b.    if the research hypothesis is true, a result this extreme is unlikely. 

c.     if the null hypothesis is true, a result this extreme is unlikely. 

d.    the null hypothesis is accepted.

 

39. The mean of a distribution of means is:

a.    the square-root of the original population mean. 

b.    the original population mean divided by the sample size (N). 

c.     the same as the original population mean. 

d.    the sample mean multiplied by the variance. 

 

40. A Psychologist is using a t-test to examine if taking a stress reduction course would increase how much people sleep. For this study, the significance level is .01 and the sample size is 15. What is the cut-off t-value for this study?

a.    2.625

b.    1.64

c.     2.947

d.    1.762

 

41. Which significance level(s) do Psychologists often use?

a.    .01

b.    .10

c.     .05

d.    Both A and C