* For Questions (11)-(13): A group of 15 smokers were asked about th number of cigarettes they smoke per day. Sample data were as follows: No. of cigarettes No. of smokers 17 20 22 3 5 10 15 1 4 (11) The sample mean (a)5 (b)3 (c) 16.8 (d) 17.87 (12) The sample standard deviation (a) 3.33 (b) 11.06 (c) 3.44 (d) 11.85 (13) The sample interquartile range (b) 7 (a) 5 (c) 1 (d) 4

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* For Questions (11)-(13): A group of 15 smokers were asked about the
number of cigarettes they smoke per day. Sample data were as follows:
No. of cigarettes
No. of smokers
10
15
17
20 22
3
4
(11) The sample mean
(a)5
(b)3
(c) 16.8
(d) 17.87
(12) The sample standard deviation
(а) 3.33
(b) 11.06
(c) 3.44
(d) 11.85
(13) The sample interquartile range
(b) 7
(a) 5
(c) 1
(d) 4
Transcribed Image Text:* For Questions (11)-(13): A group of 15 smokers were asked about the number of cigarettes they smoke per day. Sample data were as follows: No. of cigarettes No. of smokers 10 15 17 20 22 3 4 (11) The sample mean (a)5 (b)3 (c) 16.8 (d) 17.87 (12) The sample standard deviation (а) 3.33 (b) 11.06 (c) 3.44 (d) 11.85 (13) The sample interquartile range (b) 7 (a) 5 (c) 1 (d) 4
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