Muriple Attempts Not alowed This test can only be taken once. Force Completon on
ID: 3222103 • Letter: M
Question
Muriple Attempts Not alowed This test can only be taken once. Force Completon once started, eis test must be in one seng Do not eave the test before cacking save and submit Moving to another queston wil save this response. 1 of 10 You fism has puoduced a new widget which is sold online. The widget is uted on a five point scale (1 very bad, s eery good oa your website The atangs are presented below Find the expected (mean .variance, standard deiation for the Eatings of your widget What percent of individuals your puodoet as 2 or belove SAMSUNGExplanation / Answer
From following results
Mean=Sum(xp)=3.975
Variance = Sum(x^2*p) – Mean2=16.9-3.9752 = 1.099375
Standard deviation =sqrt(variance)=sqrt(1.099375) = 1.048510849
Rating(x)
p
xp
x^2*p
1
0.0225
0.0225
0.0225
2
0.10
0.2
0.4
3
0.1275
0.3825
1.1475
4
0.38
1.52
6.08
5
0.37
1.85
9.25
Total
1
3.975
16.9
Rating(x)
p
xp
x^2*p
1
0.0225
0.0225
0.0225
2
0.10
0.2
0.4
3
0.1275
0.3825
1.1475
4
0.38
1.52
6.08
5
0.37
1.85
9.25
Total
1
3.975
16.9
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