A salesman normally makes a sale​ (closes) on ​% of his presentations. Assuming the presentations are​ independent, find the probability of the following. ​a) He fails to close for the first time on his attempt. ​b) He closes his first presentation on his attempt. ​c) The first presentation he closes will be on his second attempt. ​d) The first presentation he closes will be on one of his first three attempts.

Step-by-step explanation:

Given

close

fail to close

First, calculate the value of q

Using complement rule

So, we have:

and

Solving (a): Fails to close on the 4th attempt

This means that he closes the first three attempts. The event is represented as: p p p q

So, we have:

Solving (b): He closes for the first time on the 3rd attempt

This means that he fails to close the first two attempts. The event is represented as: q q p

So, we have:

Solving (c): First he closes is his 2nd attempt

This means that he fails to close the first. The event is represented as: q p

So, we have:

Solving (d): The first he close is one of his 3 attempts

To do this, we make use of complement rule

The event that he does not close any of his first three attempts is: q q q

The probability is:

The opposite is that the first he closes is one of the first three

So, we have:

--- complement rule

6,250

step-by-step explanation:

to get the area, multiply 360 by 160.(57,600)

to find out how many bags of fertilizer it will take, first figure out how many square feet one bag can hold. divide 1000 by 8(125) to get the unit rate(how many square feet one pound of fertilizer can hold)and multiply it by 50(6250). if i haven't made a mistake, that is the answer.

what is the question?

step-by-step explanation: