18 percent of people in a city eligible to donate blood actually do. You randomly select four eligible blood donors and ask them if they donate blood. Complete parts​ (a) through​ (d) below.

Step-by-step explanation:

Given

Required

(a) - (d)

x | P(x)

0 | 0.452

1 |

2 |

3 |

4 |

To solve (a) to (d), we simply apply the following binomial probability formula

Solving (a):

So, we have:

Solving (b):

So, we have:

Solving (c):

So, we have:

Solving (d)

So, we have:

3

step-by-step explanation:

because where the point where the 2 lines intersect is (3,-1) the x value is 3