Question

On a recent survey, 400 working Americans were asked “How many days do you feel stressed...

On a recent survey, 400 working Americans were asked “How many days do you feel stressed or anxious at work?”

Number of Days

Frequency

0

60

1

35

2

15

3

120

4

70

5

100

a) What is the probability that a randomly selected person feels stressed at work three days per week?

b) Conditional on feeling stressed at least once per week, what is the probability that a randomly selected person is stressed more than three days per week?

c) What is the 50th percentile (median) response in the sample?

d) Find the sample mean, .

e) Find the sample standard deviation,

Math   Statistics-And-Probability   
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