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rosijanka [135]
2 years ago
5

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If a certain statistician has an of 122 ,

what percent of the population has a lower IQ?
A. 47%
B. 93%
C. 22%
D. 99%
E. 7%
Mathematics
1 answer:
marusya05 [52]2 years ago
7 0

Answer:

B. 93%

Step-by-step explanation:

Find the z-score:

z = (x − μ) / σ

z = (122 − 100) / 15

z = 1.47

Find the probability using a calculator or z-score table.

P(Z < 1.47) = 0.93

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The footage of the room with a rental price of $1500 is 709 square foot

<h3>Linear equation</h3>

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5 0
2 years ago
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Usimov [2.4K]
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3 years ago
144 = -12 (x + 5)<br><br> find x<br><br> Show work.
kumpel [21]

Answer:

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Step-by-step explanation:

144 = -12 (x + 5)

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3 0
2 years ago
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Tickets to a football final are selling well. On Thursday, 47 of the tickets are sold. On Friday, 14 of the tickets are sold. Wh
lbvjy [14]

The question seems incomplete ; as the total number of tickets to be sold isn't given.

Answer:

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Let's take the total Number of tickets to be sold as : X

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Number sold on Friday = 14

Fraction of tickets available for sale on Saturday :

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Fraction available for sale on Saturday = (47+14) / X

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Answer:

hope this helps !

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