Business Statistics

Business Statistic

Part I - Answers

1.

d) probability density function

2.

d) zero

3.

d) The standard deviation must be 1

4.

d) the mean

5.

d) wider and flatter

6.

b) a mean of 0 and a standard deviation of 1

7.

a) minus infinity to infinity

8.

c) the z is to the left of the mean

9.

b) 0.5

10.

b) is always equal to one

11.

d) 0.0829

12.

b) 0.1303

13.

d) 0.0174

14

b) 1.22

15.

a) 1.08

16.

d) 0.9452

17.

a) 0.9267

18.

d) 0.9190

19.

b) 50 %

20.

a) the weight of football players

21.

b) 0.0495

22.

b) 0.9772

23.

d) None of the alternative answers is correct.

24.

b) 151

25.

a) the starting salaries

26.

b) 0.9772

27.

c) 0.0668

28.

d) 76.98%

29.

a) the weight of items produced by a machine

30.

c) 0.1587

31.

d) 0.0440

32.

c) 3.22 %

33.

d) 0.4617

34.

d) None of the alternative answers is ...