Question 1 1.5 pts A recent study of driving behavior suggests that self-reporte

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Question 1 1.5 pts A recent study of driving behavior suggests that self-reported measures of high driving skills and low ratings of safety skills create a dangerous combination. Drivers were classified as high or low in self-rated skill based on responses to a driver-skill inventory, then classified as high or low in safety skill based on responses to a driver-aggression scale. An overall measure of driving risk was obtained by combining several variables such as number of accidents, tickets, tendency to speed, and tendency to pass other cars. Using an alpha level of 0.05, conduct the appropriate statistical test to identify any effects. The hypothetical results are presented in the following table:

Explanation / Answer

Answer

we are conducting a correlation , we know the critical region has to be in two tails

This is because we want to identify any effect between self Rated driving skills and Driving safety, so we are identifying whether there is any correlation between the variables or not. We know that for correlation hypothesis, we test whether there is any relationship or not, i.e. the null hypothesis is assumed that there is no correlation, means rho or population correlation is zero and alternate hypothesis is assumed that there is significant correlation.

so, it is two sided hypothesis testing

Null hypothesis for correlation test is assumed to be equal to 0

so, correct options are equal to and 0

Alternate hypothesis for correlation test is assumed to be not equal to 0 because if there is anyy correlation then the correlation must be negative or positibe, but not equal to zero

so, correct options are not equal to and 0

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