Question

The following frequency distribution shows the number of passengers who flew on a small regional aircraft company’s flight number 1853 for the past 50 days.

Number of passengers on Flight 1853 |
Frequency (days) |
Relative Frequency |
Cumulative Relative Frequency |

50 to 59 |
4 |
||

60 to 69 |
11 |
||

70 to 79 |
15 |
||

80 to 89 |
9 |
||

90 to 99 |
8 |
||

100 to 109 |
3 |

Use this data to construct a **relative frequency**
and **cumulative relative frequency** distribution.
Report all of your answers in the table above to 2 decimal places,
using conventional rounding rules.

What **percent** of the days are there less than 70
passengers on Flight 1853? Report your final answer to 2 decimal
places, using conventional rounding rules.

ANSWER: %

What **proportion** of the days are there 80 – 89
passengers on Flight 1853? Report your final answer to 2 decimal
places, using conventional rounding rules.

ANSWER:

What **percent** of the days are there at least 80
passengers on Flight 1853? Report your final answer to 2 decimal
places, using conventional rounding rules.

ANSWER: %

What is the approximate mean number of passengers on Flight 1853? Report your final answer to 2 decimal places, using conventional rounding rules.

ANSWER:

What is the approximate standard deviation of the number passengers on Flight 1853? Report your final answer to 2 decimal places, using conventional rounding rules.

ANSWER:

What is the midpoint of the class interval with the smallest frequency? Report your final answer to 2 decimal places, using conventional rounding rules.

ANSWER:

Answer #1

**Percent** of the days there are less than 70
passengers on Flight 1853 = 0.08+0.22

= 0.30 = **30.00%**

**Proportion** of the days there are 80 – 89
passengers on Flight 1853 = **0.18**

**Percent** of the days are there at least 80
passengers on Flight 1853 = 0.18 + 0.16 + 0.06

=0.40 = **40.00%**

Mean number of passengers on Flight 1853 =
**77.5**

Standard deviation of the number passengers on Flight 1853 =
**13.59**

Smallest Frequency class = 100-109

**Midpoint** of the class interval with the
smallest frequency = **104.50**

The following frequency distribution shows the number of
passengers who flew on a small regional aircraft company’s flight
number 1853 for the past 50 days.
Number of passengers
on Flight 1853
Frequency (days)
Relative Frequency
Cumulative
Relative
Frequency
50 to 59
5
60 to 69
13
70 to 79
17
80 to 89
7
90 to 99
6
100 to 109
2
Use this data to construct a relative frequency
and cumulative relative frequencydistribution.
Report all of your answers in...

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Frequency
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22
70 - 74
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Frequency
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