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

Research Question: Do more than 70% of people who work from home play video games?

Population proportion = 70%

Number of people from sample who said they play video games = 42

Sample size = 50

2.Using the information below calculate the predicted value for Y for the given value of X.

Y (Dependent Variable) = Cost of a car in thousands of dollars (i.e. Y = 1 means one-thousand dollars)

X (Independent Variable) = Miles per Gallon in city traffic

yhat = 28.1 + 0.62*X

On average how many thousands of dollars would a car cost if it gets 15 Miles per Gallon in city traffic(round your answer to 4 decimal places)?

3.Using the information below calculate the predicted value for Y for the given value of X.

Y (Dependent Variable) = Grade Point Average

X (Independent Variable) = Average number of hours spent studying per week

yhat = 2 +0.196*X

On average what would a person's Grade Point Average be if they spend on average 8 hours studying per week(round your answer to 4 decimal places)?