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lawyer [7]
4 years ago
14

The scores of eighth-grade students in a math test are normally distributed with a mean of 57.5 and a standard deviation of 6.5.

From this data, we can conclude that 68% of the students received scores between and .
Mathematics
2 answers:
Anna11 [10]4 years ago
8 0
Approximately 68% of a normal distribution lies within one standard deviation of the mean, so this corresponds to students with scores between (57.5 - 6.5, 57.5 + 6.5) = (51, 64)
Kaylis [27]4 years ago
5 0

As given, the scores of eighth-grade students in a math test are normally distributed with a mean of 57.5 and a standard deviation of 6.5.

This means that around 68% of the distributed data lies within the ranges of -6.5 to +6.5 of the given standard deviation.

This implies to:

57.5-6.5=51 and 57.5+6.5=64

So, the range of scores lies between (51,64)

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The regular price of a color TV is ​$585.83. During a​ sale, Hill TV is selling the TV for ​$526.77. Determine the percent decre
Ainat [17]

The actual price of the TV is $ 566.37. During a sale, it was sold at $ 502.21. 11.3282% decrease in the price of the TV.

First, we need to the difference in the price.

Let us call the actual price M.R.P and the value it was sold for as S.P

SO we have M.R.P = $ 566.37 and S,P = $ 502.21. THe difference D = M.R.P -S.P = $566.37-$502.21 = $64.16

To find the percent decrease will have to compare the difference with M.R.P and multiply it by a hundred so we get,

D% = (D/M.R.P)x 100 = 64.16/566.37 x100 = 11.3282 %.

Discount pricing is a type of promotional pricing strategy that involves lowering the original price of a product or service with the goal of increasing traffic, moving inventory, and increasing sales. Consumers are attracted to low prices because they want to feel they are getting a good deal.

The difference between what a consumer is willing to pay for a service and the market price. The potential price of Rs.250 and the actual price he considers is Rs.200.

Learn more about the actual price at

brainly.com/question/19104371

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8 0
2 years ago
What number makes the equation true? 35 + = 42​
taurus [48]

Answer:

7

Step-by-step explanation:

42 - 35 = 7

3 0
3 years ago
Read 2 more answers
Half of allen's test score plus 8 equals 50. what did Allen score on his test?
Dmitry [639]
Let x= Allen's score

1/2x +8=50
multiply by 2 to eliminate the fraction
x+16=100
subtract 16 from both sides
x= 84 is Allen's test score

hope this helps
5 0
3 years ago
Read 2 more answers
Find the volume of a cylinder with height 14.7 cm and diameter 10.5 cm.
velikii [3]

Hello!

The volume of a cylinder is found by using the formula: V = πr²h.

The problem has given us the height of the cylinder, which is 14.7 centimeters, and the diameter which is 10.5 centimeters. The volume of a cylinder requires the radius, so therefore, to find the radius, divide the diameter by half, and that will give the radius.

R = 10.5 / 2

R = 5.25 centimeters

With that radius and the height, we can find the volume of the cylinder.

V = π(5.25)²(14.7)

V = 27.5625(14.7)π

V = 405.17π, 1272.23 (multiplied by 3.14), 1272.88 (multiplied by π)

Therefore, the volume of this cylinder is 1272.88 centimeters³.

5 0
4 years ago
(5.7*100,000)(1.9*1000,000)
Digiron [165]

Answer: (5.7*10^5) = 570,000 and 1.9*10^6 = 1,900,000

so the answer is the sum o f it!

4 0
4 years ago
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