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Neko [114]
3 years ago
6

Find the sum which becomes 19,320 on increasing by 15% (Percentage)

Mathematics
1 answer:
kodGreya [7K]3 years ago
3 0

Answer:

Step-by-step explanation:

100-15=85

85 % of x=19,320

x=19,320 ×100/85≈22729.41

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For males in a certain town, the systolic blood pressure is normally distributed with a
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Answer:

99.7%

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An art history professor assigns letter grades on a test according to the following scheme.A: Top 5% of scoresB: Scores below th
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Answer:

Grade B score:

76 \leq x \leq 89    

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 73.3

Standard Deviation, σ = 9.7

We are given that the distribution of score on test is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

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We have to find the value of x such that the probability is 0.62

P( X > x) = P( z > \displaystyle\frac{x - 73.3}{9.7})=0.62  

= 1 -P( z \leq \displaystyle\frac{x - 73.3}{9.7})=0.62  

=P( z \leq \displaystyle\frac{x - 73.3}{9.7})=0.38  

Calculation the value from standard normal z table, we have,  

\displaystyle\frac{x - 73.3}{9.7} = 0.305\\\\x = 76.26  

We have to find the value of x such that the probability is 0.05

P(X < 0.95) = \\\\P( X < x) = P( z < \displaystyle\frac{x - 73.3}{9.7})=0.95

Calculation the value from standard normal z table, we have,  

\displaystyle\frac{x - 73.3}{9.7} = 1.645\\\\x = 89.26  

Thus, the numerical value of score to achieve grade B is

76 \leq x \leq 89

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3 years ago
What name is given to the price dealerships pay for vehicles
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The answer is...

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Cost

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