Question

6 multiple choice 10 points a researcher selects a sample of 200 college students and measures the gpa and amount of time spent on instagram for each student. the researcher plans to use a hypothesis test to determine whether there is a significant relationship between the two variables. which of the following is the correct null hypothesis for the test? p = 0 p ≠ 0 p = 1.00 p ≠ 1.00 7 multiple choice 10 points what is the name of a special type of correlation used with data from an ordinal scale? the phi - coefficient correlation the spearman correlation the point - biserial correlation none of the above

Explanation:

For question 6:

• The null hypothesis ($H_0$) in a correlation test assumes no relationship. The population correlation coefficient is denoted by $

ho$. A value of $
ho = 0$ implies no linear relationship.
For question 7:

• The Spearman correlation ($r_s$) is used for ordinal - scale data. The Phi - Coefficient is for nominal, dichotomous data. The Point - Biserial is for one continuous and one dichotomous (nominal) variable.

Answer:

1. $

ho=0$

1. the Spearman correlation