Question

1.) A municipal bus company has started operations in a new subdivision. Records were kept on the numbers of riders from this subdivision during the early- morning service. The accompanying table shows proportions over all weekdays. Number Of Riders: 0, 1, 2, 3, 4, 5, 6, 7 Proportion: 0.02, 0.12, 0.23, 0.31, 0.19, 0.08, 0.03, 0.02 a.) What is the probability that on a randomly chosen weekday there will be at least four riders from the subdivision on this service? b.) Two weekdays are chosen at random. What is the probability that on both of these days there will be fewer than three riders from the subdivision on this service? c.) Find the mean and standard deviation of the number of riders from this subdivision on this service on a weekday. d.) If the cost of a ride is 50 cents, find the mean and standard deviation of the total payments of riders from this subdivision on this service on a weekday.

          1.) A municipal bus company has started operations in a new subdivision. Records
were kept on the numbers of riders from this subdivision during the early-
morning service. The accompanying table shows proportions over all weekdays.

Number Of Riders: 0, 1, 2, 3, 4, 5, 6, 7
Proportion: 0.02, 0.12, 0.23, 0.31, 0.19, 0.08, 0.03, 0.02

a.) What is the probability that on a randomly chosen weekday there will be at least four riders from the subdivision on this service?

b.) Two weekdays are chosen at random. What is the probability that on both of these days there will be fewer than three riders from the subdivision on this service?

c.) Find the mean and standard deviation of the number of riders from this subdivision on this service on a weekday.

d.) If the cost of a ride is 50 cents, find the mean and standard deviation of the total payments of riders from this subdivision on this service on a weekday.

1.) A municipal bus company has started operations in a new subdivision. Records
were kept on the numbers of riders from this subdivision during the early-
morning service. The accompanying table shows proportions over all weekdays.

Number Of Riders: 0, 1, 2, 3, 4, 5, 6, 7
Proportion: 0.02, 0.12, 0.23, 0.31, 0.19, 0.08, 0.03, 0.02

a.) What is the probability that on a randomly chosen weekday there will be at least four riders from the subdivision on this service?

b.) Two weekdays are chosen at random. What is the probability that on both of these days there will be fewer than three riders from the subdivision on this service?

c.) Find the mean and standard deviation of the number of riders from this subdivision on this service on a weekday.

d.) If the cost of a ride is 50 cents, find the mean and standard deviation of the total payments of riders from this subdivision on this service on a weekday.

Added by Francisca E.

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