Let Y be a random variable. In a population, mu Subscript Upper Y Baseline equals 65μY=65 and sigma Subscript Upper Y Superscript 2 Baseline equals 49σ2Y=49. Use the central limit theorem to answer the following questions. (Note: any intermediate results should be rounded to four decimal places) In a random sample of size n = 69, find Pr(Y <68) =
In a random sample of size n = 124, find Pr (68< Y <69)=
In a random sample of size n = 196, find Pr (Y >66)=

a.

b.

c.

Step-by-step explanation:

Given that ;

Let Y be a random variable In a population, where:

mean = 65

= 49

standard deviation σ  = = 7

The objective is to determine the following :

In a random sample of size n = 69, find Pr(Y <68) =

Using the Central limit theorem

From the z tables:

In a random sample of size n = 124, find Pr (68< Y <69)=

From z tables

In a random sample of size n = 196, find Pr (Y >66)=

from z tables

step-by-step explanation:

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step-by-step explanation: