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Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570

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Chapter
Section
BuyFindarrow_forward

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570
Textbook Problem

A psychology class consists of 14 males and 36 females. If the professor selects names from the class list using random sampling,

  • a. What is the probability that the first student selected will be a female?
  • b. If a random sample of n = 3 students is selected and the first two are both females, what is the probability that the third student selected will be a male?

a.

To determine

To find: The probability that the first student selected will be female.

Explanation

Given info:

The psychology class have 14 males and 36 females.

Calculation:

Calculating the probability that the first student selected will be female:

Let x denote the total number of females in the class.

And n denote the total number of students in the class.

P(Selecting female as first student )

b.

To determine

To find: The probability that third student will be a male.

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