Probability and Stats

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Question description

Attached is a Progress sheet I need completed by 10pm Eastern time. In 5 hours

jesusale932
School: University of Virginia

MAT 165
CHAPTER 3

FORM A

1. A random sample of 18 carry-on luggage bags gave the following weights (rounded to the
nearest pound).
12 25 10 38 12 19 8 12 17
41 7 22 10 19 12 16 5 14
Find the mean, median, and mode of these weights.
Mean (π₯Μ ):
π₯Μ =

β π₯π
π

π₯Μ
=

12 + 25 + 10 + 38 + 12 + 19 + 8 + 12 + 17 + 41 + 7 + 22 + 10 + 19 + 12 + 16 + 5 + 14
18
299
π₯Μ =
18
π₯Μ = 16.61

Median:
5
7
8
10
10
12
12
12
12
14
16
17
19
19
22
25
38
41

12 + 14
= 13
2
ππππππ = 13

ππππππ =
Mode:

5
7
8
10
10
12
12
12
12
14
16
17
19
19
22
25
38
41
ππππ = 12
2. A random sample of seven northern pike from Taltson Lake (Canada) gave the following
lengths rounded to the nearest inch
21
27
46
35
41
36
25
(a) Find the range
21
25
27
35
36
41
46
MIN= 21
MAX= 46
Range= MAX-MIN= 46-21= 25

Range= 25
(b) Find the sample mean
β π₯π
π
21 + 27 + 46 + 35 + 41 + 36 + 25
π₯Μ =
7
231
π₯Μ =
7
π₯Μ = 33
π₯Μ =

(c) Find the sample variance
β(π₯π β π₯Μ )2
π2 = β
πβ1
(21 β 33)2 + (27 β 33)2 +...

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Anonymous
Thanks, good work

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