A survey of 25 randomly selected customers found the ages shown (inyears). The mean is 32.08 years and the standard deviation is 10.05years.

a) What is the standard error of themean?

b) How would the standard error change if the sample size had been 100 instead of 25? (Assume that the sample standard deviationdidn't change.)

40

27

44

35

38

33

49

25

27

32

19

21

42

31

33

23

45

32

42

17

38

39

24

30

23