Question

The mean cost of a flank steak, broccoli, and rice bought at the grocery store is $15. Prices from a sample of 50 restaurants for a comparable meal is shown in spreadsheet PRICES. At an alpha level of .05, can we say that eating at a restaurant is cheaper? Formulate your hypotheses and answer the problem.

12.7

12.31

13.51

13.97

9.24

11.4

13.73

13.47

11.62

11.69

14.32

12.42

18.49

11.66

16.59

14.62

14.77

14.06

14.66

9.22

12.64

17.25

11.31

12.96

16.2

12.65

11.11

11.46

15.05

13.56

13.5

13.29

16.27

14.73

14.18

14.43

13.35

12.08

11.64

10.81

12.59

14.83

13.16

9.75

12.16

10.75

16.83

11.7

14.44

9.68

Answer 1

TOPIC:One sample t-test for the population mean.

(Here,the sample size is large enough (>30) to assume the population distribution to be Normal).