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These are the times for 200 people
to get to work.
A 10% sample, stratified by time, is taken.
Complete the table.
Time, t, (mins)
No. of people
in the sample
Time, t, (mins) No. of people
0 0 < x < 10
10 < x < 30
22
10 < x < 30
30 < x < 40
77
30 < x < 40
40 < x < 50
40 < x < 50
63
50 < x < 100
31
50 < x < 100

What is the first quartile of the data set? 10, 11, 12, 15, 17, 19, 22, 24, 29, 33, 38 a. 12 b. 19 c. 29 d. 10

()1. how do you find range? 2.the following set of data is to be organized into a histogram. if there are to be five intervals on the graph, what should the length of each interval be? 30, 34, 23, 21, 27, 25, 29, 29, 25, 23, 32, 31

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label