In a recent study o American sleept it is o adults were asked questions about th

ID: 3069541 • Letter: I

Question

In a recent study o American sleept it is o adults were asked questions about their sleep cyd least a few days each month. An additional 23 % said the problems occur a few days each week and 6 % say sleepiness on the ob is a daily occurrence For the remaining respondents, sleepiness was not a problem at all ies. The study found that 40 % say they get sleepy on the job and their work suffers at (a) Summarize the given information by constructing a frequency and relative frequency distribution. Note: round your frequency answers to the nearest integer and your relative frequendes to 2 decimal precision Sleepy at Work? Frequency Relative frequency Not at al Few days each month Few days each week Daily Occurrence

Explanation / Answer

Total Number of observations are given as 1500 adults.

We have given frequency percentage. So the percentage for remaining respondents sleepiness was not a problem at all = 100 – (40+23+6) = 31%

Relative frequency = frequency / Number of observations

Frequency = Relative frequency * Number of observations

Frequency for respondents’ sleepiness was not a problem at all = 1500*0.31 = 465

Frequency for respondents’ sleepiness was Few days each month = 1500*0.40 = 600

Frequency for respondents’ sleepiness was Few days each week = 1500*0.23 = 345

Frequency for respondents’ sleepiness was Daily occurrence= 1500*0.06 = 90

Sleep at work?

Frequency

Relative Frequency

Percentage Frequency

Not at all

465

0.31

31%

Few days each month

600

0.4

40%

Few days each week

345

0.23

23%

daily Occurrence

0.06

Total

1500

100%