Question

as part of a survey, 15 adults were asked, \how many hours did you spend at your job last week?\ use the display to answer the questions that follow. number of hours worked last week 2|1 3|0336 4|026689 5|1237 key: 2|1 means 21 hours. (a) what was the highest number of hours worked in the 40s? (b) what was the highest number of hours worked overall? (c) how many responses fell in the 20s?

Explanation:

Step1: Identify 40 - 49 values

In the stem - and - leaf plot, for the 40s, the values are 40, 42, 46, 46, 48, 49. The highest among them is 49.

Step2: Identify overall highest value

Looking at all the values in the stem - and - leaf plot: 21, 30, 33, 33, 36, 40, 42, 46, 46, 48, 49, 51, 52, 53, 57. The highest value is 57.

Step3: Count values in 20s

The only value in the 20s is 21, so there is 1 response in the 20s.

Answer:

(a) 49
(b) 57
(c) 1