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galina1969 [7]
3 years ago
5

iq scores are normally distributed with a mean of 100 and a standard deviation of 15. What percentage of people have an IQ betwe

en 130 and 100 a)13.5% b)47.5% c)95% d)27%
Mathematics
1 answer:
Natalija [7]3 years ago
3 0

Answer:

"approximately 47.%"

Step-by-step explanation:

Using the statistical function normalcdf( on my old TI-38 calculator:

normalcdf(100,130, 100, 15) returns the fraction 0.477,

so the final answer here is "approximately 47.%"

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