A salesperson found that there was a 1% chance of a sale from her phone solicitations. Find the probability of getting 5 or more sales for 2000 telephone calls.

P(X ≥ 5) = 0.99972

Step-by-step explanation:

From the given data;

Mean

Mean

Mean

Standard deviation

4.44972

P(X ≥ 5) ; The discrete distribution by continuous  normal distribution for P(X ≥ 5) lies between 4.5 and 5.5. Hence, Normal distribution x = 4.5 since greater than or equal to is 5 relates to it.

Now;

z = −3.45

P(X > 4.5) = P(Z > -3.45)

P(X > 4.5) = 1 - P (Z < - 3.45)

From Normal  Z tables;

P(X > 4.5) = 1 - 0.00028

P(X > 4.5) = 0.99972

P(X ≥ 5) = 0.99972

y/x=18

step-by-step explanation:

the answer is $42.96

step-by-step explanation: