BUS108

1

If A and B are two events such that P(A) = 0.35, P(B) = 0.45 and

P(A and B)= 0.20, what is P(B given A)?Work to two decimal places.

Select one:

A 0.60

B 0.80

C 0.44

D 0.57

E None of these choices is correct.

2

After flipping a fair coin 5 times and getting 5 tails in a row, what is the probability of getting a tail on the next toss?

Select one:

A 1.00

B 0.50

C 0.99

D 0.02

E 0.25

3

In a normal distribution with mean 50 and variance 16, within what values would we expect approximately 95% of values to lie?

Select one:

A Within (42, 58)

B Within (2, 98)

C Within (18, 82)

D Within (0, 100)

E Within (38, 62)

4

Assume that sales in a caf are normally distributed with a mean of $7 and a standard deviation of $3. What is the probability that one randomly selected sale is less than $8?

Select one:

A 0.7586

B 0.3707

C 0.2586

D 0.6293

E 0.3333