Where will you get your next pet? In Exercise 4.52 (p. 186), you learned that 50% of pet owners will get their next dog or cat from a Shelter (USA Today , May 12, 2010). In a random sample of 200 pet owners, let x be the number who will get their next dog or cat from a shelter.
a. Find the mean of x.
b. Find the standard deviation of x.
c. Find the z -score for the value x = 110.
d. Find the approximate probability that x is less than or equal to 110
Exercise 4.52
Where will you get your next pet? According to an Associated Press/Petside.com poll, half of all pet owners would get their next dog or cat from a shelter ( USA Today, May 12, 2010). Consider a random sample of 10 pet owners and define x as the number of pet owners who would acquire their next dog or cat from a shelter. Assume that x is a binomial random variable.
a. For this binomial experiment, define a success.
b. For this binomial experiment, what is n ?
c. For this binomial experiment, what is p ?
d. Find P( x = 7 ).
e. Find P( x ≥ 3 ).
f. Find P( x > 8 ).
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