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sesenic [268]
2 years ago
10

Suppose that IQ scores have a bell-shaped distribution with a mean of 101 and a standard deviation of 12. Using the empirical ru

le, what percentage of IQ scores are between 77 and 125?
SAT
1 answer:
7nadin3 [17]2 years ago
3 0

95.44% IQ scores are between 77 and 125

We're given,

Mean (a)=101

standard deviation (b)=12

To find : P[77 < x < 125]

Using Empirical Rule:

∴ P[77 < x < 125]  = P[\frac{77-101}{12} < \frac{x-a}{b} < \frac{125-101}{12}]\\

=P[-2 < z < 2]\\

=P[Z < 2]-P[Z < -2]\\

=0.9772-0.0228\\

=0.9544 =95.44% (approx)

Learn more about Empirical rule of IQ calculation here:

brainly.com/question/13077017

#SPJ10

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The heat can be so extreme that signs in the park advise turning off the air conditioning in certain areas to avoid overheating of cars, making the experience an even toastier one. Additionally, hiking is recommended only before 10am and with lots of water.

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3 years ago
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In the question excerpt, that  element was the friendship between the nobility and the knight.

The king was believed to have been appointed by God himself. Religion played an important role in medieval culture. The importance of Christian practice is evident from the excerpts provided. The choice of words is indicative of Christianity and its practices, and excerpts can be read as "the band's singing came to an end" and "a loud cry came from the clergy and  others proclaiming Noel again". increase.

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brainly.com/question/855630

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3 0
1 year ago
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