Chapter 12.2, Problem 3P

a.

To determine

To make:a cumulative frequency table for the given data.

Answer to Problem 3P

  

Explanation of Solution

Given:

The given data shows battery life, in hours, for different brands of batteries.

  $171411141451665910139$ .

Calculation:

As the given data is $171411141451665910139$ .

Now, the data is first arranged in increasing order. Then,

  $145569910111314141617$

The minimum data value is 1, and the maximum value is 17.

Divide the data in to four intervals.

Therefore, create a frequency table:

Amount	Frequency
$1-5$	7
$6-10$	2
$11-15$	1
$16-20$	2

Draw and level the axes. Draw a bar to represent the frequency of each interval.

The histogram for the given data is:

  

b.

To determine

To find: the amount of money should jay plan to bring for lunch next week.

Answer to Problem 3P

  $\$16$ .

Explanation of Solution

Given:

The given data shows battery life, in hours, for different brands of batteries.

  $171411141451665910139$ .

Calculation:

From, the above graph in part(a),

The trends in the given data is that on the first day of the week. Jay spend the most since 17 and 16 are both the highest amount in their respective weeks.

Thus, the possible amount that jay should bring is $\$16$ .