a-study-finds-that-292929-of-university-freshmen-own-a-car-if-you-randomly-selec

Question

A study finds that $29 percent sign$ of university freshmen own a car. If you randomly select $15$ freshmen, what is the probability that fewer than $5$ of them own a car? Decide whether or not applying the normal approximation is suitable for this case, and if using it is possible. Is this event considered unusual?

Accepted Answer

The normal approximation is not suitable.

$P of open paren X is less than 5 close paren equals 0.55$

The event is not unusual.

Answer

The normal approximation is suitable.

$P of open paren X is less than 5 close paren equals 0.55$

The event is not unusual.

Answer

The normal approximation is not suitable.

$P of open paren X is less than 5 close paren equals 0.55$

The event is unusual.

Answer

The normal approximation is suitable.

$P of open paren X is less than 5 close paren equals 0.55$

The event is unusual.