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Ipatiy [6.2K]
2 years ago
15

a department store sells a pair of shoes with an 87% markup, if the store bought the pair of shoes for 55.25, what is the sellin

g price to the nearest dollar?
Mathematics
1 answer:
katovenus [111]2 years ago
8 0

Answer:

$103

so 87% of $55.25 is 48.0675

48.0675+55.25 is 103.3175

103.3175 rounded to the nearest dollar is 103.

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Scores on the test are normally distributed with a mean of 79 and a standard deviation of 8.4. Find the numerical limits for a B
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This is not the question, the correct question is:

A humanities professor assigns letter grades on a test according to the following scheme. A: Top 6% of scores B: Scores below the top 6% and above the bottom 59% C: Scores below the top 41% and above the bottom 17% D: Scores below the top 83% and above the bottom 7% F: Bottom 7% of scores.

Scores on the test are normally distributed with a mean of 79 and a standard deviation of 8.4. Find the numerical limits for a B grade. Round your answers to the nearest whole number, if necessary.

Answer:  The numerical limits for grade B is 81 and 92

Step-by-step explanation:

Given that

mean Ж = 79

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To find the numerical value for Grade B

Below the top bottom 6% ( 0.06) is

p ( X < Ж ) = 1 - 0.06

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X - 79 = 13.0603

X = 13.0603 + 79

X = 92.06 ≈ 92 ( nearest whole number)

Above bottom 59% ( 0.59) is

p ( X < Ж ) = 0.59

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P( (X - ц)/S < (X - Ж) / S)) = 0.59

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X - 79 = 1.9114

X = 1.9114 + 79

X = 80.91 ≈ 81 ( nearest whole number)

So the numerical limits for grade B is 81 and 92

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