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aleksklad [387]
3 years ago
11

Are the ratios 9:5 and 3:2 equivalent? yes or no

Mathematics
1 answer:
castortr0y [4]3 years ago
7 0
Yes they are equivalent
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A bowling leagues mean score is 197 with a standard deviation of 12. The scores are normally distributed. What is the probabilit
Bond [772]

Answer:

0.281 = 28.1% probability a given player averaged less than 190.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

A bowling leagues mean score is 197 with a standard deviation of 12.

This means that \mu = 197, \sigma = 12

What is the probability a given player averaged less than 190?

This is the p-value of Z when X = 190.

Z = \frac{X - \mu}{\sigma}

Z = \frac{190 - 197}{12}

Z = -0.58

Z = -0.58 has a p-value of 0.281.

0.281 = 28.1% probability a given player averaged less than 190.

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3 years ago
Pls help me I don’t understand this
I am Lyosha [343]
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3 years ago
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Equation that has solutions x = -2 and x = 8
VLD [36.1K]
If you were to solve this equation you would get answers of x=-2 and x=-8

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3 years ago
More on fraction <br><br>21×5​
Tju [1.3M]

Answer:

105.

Step-by-step explanation:

21+21+21+21+21=105.

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3 years ago
Shelby paid $1.75 for a notebook at a big 75% off sale. What was the original price of the notebook?
Shkiper50 [21]

Answer:

$7.00

Step-by-step explanation:

The discount is 75% off.  To answer this question, multiply n (the original price) by (1.00 - 0.75):  0.25n = $1.75.

Solving this for n, we get $7.00

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2 years ago
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