A frequency distribution is shown below. Complete parts (a) through (d). The number of televisions per household in a small town Televisions 0 1 2 3 Households 30 444 729 1402 2 0.353

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.4: Discrete Random Variables; Applications To Decision Making
Problem 4E
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A frequency distribution is shown below. Complete parts (a) through (d).
The number of televisions per household in a small town
Televisions
0
2
3
Households 30
729
1402
2
0.353
3
0.679
(Round to the nearest thousandth as needed.)
1
444
(b) Find the mean of the probability distribution.
μ = 2.9 (Round to the nearest tenth as needed.)
Find the variance of the probability distribution
o² = (Round to the nearest tenth as needed.)
Find the standard deviation of the probability distribution
0 =
(Round to the nearest tenth as needed)
O
II
23
BC
0
Transcribed Image Text:A frequency distribution is shown below. Complete parts (a) through (d). The number of televisions per household in a small town Televisions 0 2 3 Households 30 729 1402 2 0.353 3 0.679 (Round to the nearest thousandth as needed.) 1 444 (b) Find the mean of the probability distribution. μ = 2.9 (Round to the nearest tenth as needed.) Find the variance of the probability distribution o² = (Round to the nearest tenth as needed.) Find the standard deviation of the probability distribution 0 = (Round to the nearest tenth as needed) O II 23 BC 0
A frequency distribution is shown below. Complete parts (a) through (d).
The number of televisions per household in a small town
Televisions
0
2
3
Households 30
729
1402
(a) Use the frequency distribution to construct a probability distribution.
P(x)
0
1
DUBEN
0.012
119
1
444
0.170
2
0.353
3
0.679
(Round to the nearest thousandth as needed.)
(b) Find the mean of the probability distribution.
H = 29 (Round to the nearest tenth as needed.)
Find the variance of the probability distribution
2²=17 Round in the nearest tenth as needed i
To
101
B
W
O
Transcribed Image Text:A frequency distribution is shown below. Complete parts (a) through (d). The number of televisions per household in a small town Televisions 0 2 3 Households 30 729 1402 (a) Use the frequency distribution to construct a probability distribution. P(x) 0 1 DUBEN 0.012 119 1 444 0.170 2 0.353 3 0.679 (Round to the nearest thousandth as needed.) (b) Find the mean of the probability distribution. H = 29 (Round to the nearest tenth as needed.) Find the variance of the probability distribution 2²=17 Round in the nearest tenth as needed i To 101 B W O
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