Chapter 6.1, Problem 1LC

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8th Edition

Frederick J Gravetter + 1 other

ISBN: 9781133956570

Textbook Problem

A survey of the students in a psychology class revealed that there were 19 females and 8 males. Of the 19 females, only 4 had no brothers or sisters, and 3 of the males were also the only child in the household. If a student is randomly selected from this class,

**a.**What is the probability of obtaining a male?**b.**What is the probability of selecting a student who has at least one brother or sister?**c.**What is the probability of selecting a female who has no siblings?

**(a)**

To determine

**To find:** The probability of obtaining a male.

Explanation

**Given info:**

The survey conducted by psychology class students. In that survey it is revealed that out of 19 females only 4 had no brothers or sisters and out of 8 males only 3 had no brothers or sisters.

**Calculation:**

The formula for calculating the probability is,

Calculating probability of obtaining a m

**(b)**

To determine

**To find:** The probability of selecting a student who has at least one brother or sister.

**(c)**

To determine

**To Find:** The probability of selecting a female who has no siblings.

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