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guapka [62]
3 years ago
9

At the Virgin Music store in Times Square, 60 people entering the store were selected at random and were asked to choose their f

avorite type of music. Of the 60, 12 chose rock, 16 chose country, 8 chose classical, and 24 chose something other then rock, country, or classical. Determine the empirical probability that the next person entering the store favors
(a) rock music.
(b) country music.
(c) something other then rock, country, or classical music.
Mathematics
1 answer:
9966 [12]3 years ago
6 0

Answer:

A) 20%.

B) 26.66%.

C)  40%.

Step-by-step explanation:

Since at the Virgin Music store in Times Square, 60 people entering the store were selected at random and were asked to choose their favorite type of music, and of the 60, 12 chose rock, 16 chose country, 8 chose classical, and 24 chose something other then rock, country, or classical, to determine the empirical probability that the next person entering the store favors (a) rock music, (b) country music, and (c) something other then rock, country, or classical music, the following calculation must be performed:

A)

60 = 100

12 = X

12 x 100/60 = X

1200/60 = X

20 = X

Therefore, the probability that the next person favors rock music is 20%.

B)

60 = 100

16 = X

16 x 100/60 = X

1600/60 = X

26.66 = X

Therefore, the probability that the next person favors country music is 26.66%.

C)

60 = 100

24 = X

24 x 100 / 60 = X

2400 / 60 = X

40 = X

Therefore, the probability that the next person favors another type of music is 40%.

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12

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miskamm [114]

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Step-by-step explanation:

Since the amount of time it takes her to arrive is normally distributed, then according to the central limit theorem,

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σ = standard deviation

From the information given,

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the probability that her commute would be between 19 and 26 minutes is expressed as

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Looking at the normal distribution table, the probability corresponding to the z score is 0.92

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The number of times that her commute would be between 19 and 26 minutes is

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3 years ago
During a marathon, Jane ran 6 miles. Jessica ran 5.068 miles. How many more miles did Jane run than
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Answer:

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A, B and C

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In the equation: 3y=27x

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The constant of proportionality between y and x  is 9.

We want to determine which relationships have the same constant of proportionality 9.

<u>Option A</u>

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The constant of proportionality is 9.

<u>Option B</u>

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Divide both sides by 2 to obtain: y=9x

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<u>Option C</u>

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<u>Option D</u>

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This is not a proportional relation since the constant of proportionality is not equal.

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