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Bingel [31]
2 years ago
8

Dida bought a scratch ticket for $2.00. The potential payoffs and probability of those payoffs are shown below.

Mathematics
1 answer:
kakasveta [241]2 years ago
4 0

9514 1404 393

Answer:

  (b)  $1.15

Step-by-step explanation:

The expected value is the sum of products of payoff and probability:

  $0×0.15 +0.50×0.5 +1.0×0.2 +2.0×0.1 +10×0.05

  = $0 +0.25 +0.20 +0.20 +0.50

  = $1.15 . . . . expected value of the scratch ticket

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$1391.25 per hour

Step-by-step explanation:

6 0
3 years ago
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The weights (to the nearest pound) of some boxes to be shipped are found to be:. Weight 65 68 69 70 71 72 90 95 frequency 1 2 5
Lena [83]
So the mean is 72.97

We need to subtract the mean from each value and square it.
(65-72.97)^2= 63.5209
(68-72.97)^2=24.7009
(69-72.97)^2=15.7609
(70-72.97)^2=8.8209
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Now we add up the new values ( also consider their frequency) and find their mean.
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63.5209+(2 •24.7009=49.4018)+(5•15.7609=78.8045)+(8•8.8209=70.5672)+(7•3.8809=27.1663)+(3•0.9409=2.8227)+(2•290.0209=580.0418)+(2•485.3209=970.6418)= 1,842.967
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The standar deviation is the square root of the mean so is
Square root of 61.43223333=7.837871735
Round to the nearest tenth
Standard Deviation is 7.8



7 0
3 years ago
PLEASE HELP!! brainliest and 40 points for the CORRECT answer
Rasek [7]
Choice C is correct
3 0
3 years ago
C
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Step-by-step explanation:

5 0
3 years ago
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Dmitry [639]

Answer:

(-∞,7) U (7,∞)

Step-by-step explanation:

All real values of x such x ≠ 7

7 0
3 years ago
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