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IceJOKER [234]
3 years ago
7

The London School of Economics and the Harvard Business School have conducted studies of how chief executive officers (CEOs) spe

nd their time. These studies have found that CEOs spend many hours per week in meetings that include conference calls, business meals, and public events. Suppose that the data below show the time spent per week in meetings (hours) for a sample of 25 CEOs.
14 15 18 23 15
19 20 13 15 23
23 21 15 20 21
16 15 18 18 19
19 22 23 21 12
a. What is the least amount of time spent per week on meetings? The highest?
b. Use a class width of two hours to prepare a frequency distribution, a relative frequency distribution, for the data.
Mathematics
1 answer:
Nataly [62]3 years ago
4 0

Answer:

(a) The least amount of time spent per week on meetings is, 12 hours.

The highest amount of time spent per week on meetings is, 23 hours.

(b) Shown below.

Step-by-step explanation:

(a)

Arrange the data in ascending order.

S = {12 , 13 , 14 , 15 , 15 , 15 , 15 , 15 , 16 , 18 , 18 , 18 , 19 , 19 , 19 , 20 , 20 , 21 , 21 , 21 , 22 , 23 , 23 , 23 , 23}

The least amount of time spent per week on meetings is, 12 hours.

The highest amount of time spent per week on meetings is, 23 hours.

(b)

The frequency distribution table with the relative frequency distribution is as follows:

Class Interval   Frequency        Relative Frequency

    12 - 14                         3                            0.12

    15 - 17                         6                            0.24

    18 - 20                 8                            0.32

    21 - 23                 8                            0.32

     Total                        25                             1.00

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The rectangle  R’S’T’U’ is a 90° counterclockwise rotation of RSTU so options (A) and (C) will be correct.

<h3>What is a rectangle?</h3>

The rectangle is a geometrical figure in which opposite sides are equal.

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Hence the rectangle RSTU will rotate 90° counterclockwise to form  R’S’T’U’.

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Please help me on this question
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If it’s costs 60 cents for 125 grammes. How much would 100 grammes cost?
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Answer:

The age of the horse, in human years, when Alex was born can be determined by simply deducting the Current age of Alex from the Current age of the horse in human years.

Therefore, the age of the horse, in human years, when Alex was born was 42 years.

Step-by-step explanation:

Current age of Alex = 8

Current age of the horse in human years = 50

Since the age of the horse is already stated in human years, it implies there is no need to convert the age of the horse again.

Therefore, since Alex is a human who was born 8 years ago, the age of the horse, in human years, when Alex was born can be determined by simply deducting the Current age of Alex from the Current age of the horse in human years as follows:

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Therefore, the age of the horse, in human years, when Alex was born was 42 years.

This can be presented in a table as follows:

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Eight years ago              0                                           42

Current age                    8                                           50

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