Trying to figure out the formula for p-value and how to find the rejection point for a=0.01?

A random sample of 65 restaurant customers was taken and they were asked to rate their level of satisfaction with their meal.
The restaurant owner claims that the mean satisfaction score exceeds 42.
Required:
Lettingrepresent the mean satisfaction score for the restaurant, set up the null hypothesisand the alternative hypothesisneeded to provide evidence supporting the claim thatexceeds 42.
H0:			42
Ha:		>	42
Using the data contained in tab "Ratings", determine the following:
Simple Mean	42.95384615
Assume the population standard deviation is equal to:			2.64
Sample Size	65
z =	2.912936949
p-value:
Find the rejection point for = 0.01
Do you reject or not reject the null hypothesis?	Reject

Ratings

39

45

38

42

42

41

38

42

46

44

40

39

40

42

45

44

42

46

40

47

44

43

45

45

40

46

41

43

39

43

46

45

45

46

43

47

43

41

40

43

44

41

38

43

36

44

44

45

44

46

48

44

41

45

44

44

44

46

39

41

44

42

47

43

45