A normal distribution has a mean of 75 and a standard deviation of 10 use the standard normal table to find the probability that

Question

KatRina [158]

3 years ago

15

A normal distribution has a mean of 75 and a standard deviation of 10 use the standard normal table to find the probability that

a randomly selected X value from the distribution is less than or equal to 50
A. -2.5
B. 0.0062
C. 0.9938
D. 2.5

Mathematics

1 answer:

-BARSIC- [3] · Answer 1 · 2022-07-06T06:43:05+03:00

-BARSIC- [3]3 years ago

7 0

Answer:

0.006

Step-by-step explanation:

We are actually looking for the area under the standard normal curve to the left of 50. The proper distribution function on my old TI calculator is normalcdf(:

normalcdf(-1000,50,75, 10),

which returns 0.006 (Answer B)