Question

X is a normally distributed random variable with mean 26 and standard deviation 1.

What is the probability that X is between 24 and 28?
Use the 0.68-0.95-0.997 rule and write your answer as a decimal. Round to the nearest
thousandth if necessary.

Answer 1

Answer: give me brainliset

(

X

>

42

)

=

P

(

Z

>

−

1.1429

)

=

1

−

P

(

Z

<

1.1429

)

=

1

−

Φ

(

1.1429

)

=

1

−

0.8729

(from tables)

=

0.1271

Explanation: