For 1 play, the chance of gaining $8 is 4/38, while the chance of losing the $1 is 34/38. Therefore, the expected value is ($8)(4/38) + ($-1)(34/38) = $(-1/19). Over 50 plays, which are mutually independent of each other, we multiply the number of plays by the expected value to get $(-50/19) = $-2.63.
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Answer:
Therefore, the four intervals are
(1) 6 - 6.59
(2) 7 - 7.59
(3) 8 - 8.59
(4) 9 - 9.59
The four frequencies are
(1) 4
(2) 3
(3) 1
(4) 6
Step-by-step explanation:
From the data, we have
Interval Frequency
1st 6 - 6.59 4
2nd 7 - 7.59 3
3rd 8 - 8.59 1
4th 9 - 9.59 6
Therefore, the four intervals are
(1) 6 - 6.59
(2) 7 - 7.59
(3) 8 - 8.59
(4) 9 - 9.59
The four frequencies are
(1) 4
(2) 3
(3) 1
(4) 6
The unit price of the disk is $0.549
<h3>Unit price of goods</h3>
The unit price of goods are the price of one portion of the goods in question.
From the given question, a package of blank compact discs on sale at 10 for $5.49, this can be expressed as;
10 disc = $5.49
The unit price of the disc is the price of just one of the disc. The unit price is expressed as;
1 disc = x
Find the ratio
10/1 = 5.49/x
Cross multiply
10x = 5.49
Divide both sides by 10
10x/10 = 5.49/10
x = $0.549
Hence the unit price of the disk is $0.549
Learn more on unit price here: brainly.com/question/825113
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Answer:
b
Step-by-step explanation:
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