Question

please answer all question (2-5) thanks

Question 2 1 pts As the number of hours a student studies increases, the number of errors made on the exam decreases. There is a strong relationship between these variables. Select the value for the pearson correlation (r) that would be appropriate 0-0.7 0-0.4 o 0.6 o 1.0 Question 3 1 pts The following APA summary was reported for a one-sample t-test (two-tailed, alpha = .05). t(15) = 3.3, p = .003 Which of the following is an appropriate conclusion? o The difference is statistically significant. o The sample mean is 3.3 standard deviations above the population mean. o The observed difference likely occurred by chance. o The sample size is 15. D Question 4 1 pts For a set of 50 numbers a researcher calculates the following measures of central tendency: mode = 5, median = 40, mean = 60. This distribution of this data would be considered: o negatively skewed o bimodal o normal o positively skewed Question 5 1 pts The standardized regression coefficient expresses the: o strength of the correlation between the two variables that are now incorporated into a regression analysis. o relation between the independent and dependent variable in terms of squared units. o likelihood of rejecting the null hypothesis with a regression analysis. o predicted change in the dependent variable in terms of Standard deviations for an increase of 1 standard deviation in the independent variable.

Answer 1

2)

since correlation is negative and strong:

correct option is -0.70

3)

since p value <0.05

o The difference is statistically significant.

4)since median <mean

positively skewed

5)

o predicted change in the dependent variable in terms of Standard deviations for an increase of 1 standard deviation in the independent variable.