1.Calculate the appropriate test statistic based on the information provided (round your answer to 4 decimal places):

Research Question: Do carpenters make a different salary than crane operators?

DO NOTASSUME THE POPULATION STANDARD DEVIATIONS OF THE TWO SAMPLES ARE EQUAL

Group 1: Carpenter

Sample mean = 60000

Sample standard deviation = 5500

Sample size = 10

Group 2: Crane Operator

Sample mean = 62500

Sample standard deviation = 2500

Sample size = 14

2.Select statement below that is true about correlations.

Group of answer choices

Correlations are a measure of how much one variable changes as the other variable changes

Correlations are a measure used to determine the degree to which two variables are related.

A negative correlation implies no relationship between variables

Correlations are a measure of causation between two variables

Correlations can only be positive

Correlations can only be negative