Question

Walk-ins to an optometry store in a shopping mall occur at a mean rate of 1.5 customers per hour. Let the random variable X be the number of walk-ins to the optometry store per hour. What is the appropriate probability distribution to represent X? Select one: a. Poisson distribution b. Geometric distribution c. Binomial distribution d. Exponential distribution

part (b)

What is the probability of two walk-ins during an hour?

Select one:

a. 0.691

b. 0.251

c. 0.264

d. 0.736

part (c)

Calculate P(X > 1)

Select one:

a. 0.817

b. 0.442

c. 0.665

d. 0.690

e. 0.507

f. 0.777

part (d)

Interpret the meaning of the probability in part (c) in words

Select one:

a. The probability of at least one walk-in during an hour

b. The probability of more than one walk-in during an hour

c. The probability of at most one walk-in during an hour

d. The probability of one walk-in during an hour

Answer 1

The appropriate probability distribution to represent X is Option (A) Poisson distribution

a) The probability of two walk-ins during an hour is

Correct answer: option (b) 0.251

b)

Correct answer: option (b) 0.442

c) Correct answer: Option (C) The probability of more than one walk-in during an hour