Chapter 1.1, Problem 40E

(a)

To determine

To construct:A dot plot to display the data.

Explanation of Solution

Given:

The given data set is:

2,3,4,10,2,11,2,8,4,3,7,2,7,5,3,6,4,4,2,5,8,2,3,4,4.

Graph:

  

Interpretation: The graph seems to be right-skewed. All the values are lying between 2 and 11.

(b)

To determine

To compute:The percentage of words in the sample have 8 or more letters.

Answer to Problem 40E

16% of words in the sample have 8 or more letters.

Explanation of Solution

Given: As per the above sub − part a,

Total number of words in a sample = 25

Number of words with length 8 or more = 4

Calculation:

Let p bepercentage of words with letters 8 or more.

  $p=\frac{4}{25}\times 100=16\%$