Identify the variables: Total number of boys = 270

Total = 600 P(B)=?

Substitute: \(\displaystyle{P}{\left({B}\right)}=\frac{{270}}{{660}}=\frac{{9}}{{20}}\)

asked 2021-09-26

The following two-way table displays information about favorite sports cars that resulted from a survey given to all students at Shore High School.

\(\begin{array}{|c|c|}\hline & \text{Corvette (C)} & \text{Porsche (P)} & \text{Ferrari (F)} & \text{Total} \\ \hline \text{Boys (B)} & 90 & 60 & 120 & 270 \\ \hline \text{Girls (G)} & 110 & 141 & 79 & 330 \\ \hline \text{Total} & 200 & 201 & 199 & 600 \\ \hline \end{array}\)

What is the probability that a randomly selected student from this school is a boy?

asked 2021-09-07

Find the probability that a randomly selected student is in sports using the to-way table below.

asked 2021-09-02

The weight of trout in a fish farm follows the distribution N (200, 502). A trout is randomly selected.

What is the probability that out of eight trout selected randomly from the fish farm, less than three of them will not weigh more than 175g?

What is the probability that out of eight trout selected randomly from the fish farm, less than three of them will not weigh more than 175g?

asked 2021-09-02

The latest poll of randomly selected Pennsylvanians indicates that the probability of someone
coming from a rural background is .65, the probability of coming from an urban background is
.20, and the probability of coming from a background described as neither is .15

From a random selection of 20 Pennsylvanians, and assuming the data fit a binomial distribution

Find the probability that at most two say that their region is neither rural nor urban

From a random selection of 20 Pennsylvanians, and assuming the data fit a binomial distribution

Find the probability that at most two say that their region is neither rural nor urban

asked 2021-09-15

The latest poll of randomly selected Pennsylvanians indicates that the probability of someone
coming from a rural background is .65, the probability of coming from an urban background is
.20, and the probability of coming from a background described as neither is .15

From a random selection of 20 Pennsylvanians, and assuming the data fit a binomial distribution

Find the probability that at least 10 come from an urban background.

From a random selection of 20 Pennsylvanians, and assuming the data fit a binomial distribution

Find the probability that at least 10 come from an urban background.

asked 2021-08-08

Continuous Probability Distributions

The data records the length of stay of engineering students in the university. We will assume a uniform distribution between 5 to 7 years, inclusive. What is the probability that a randomly chosen engineering student will stay at most 6 years?

The data records the length of stay of engineering students in the university. We will assume a uniform distribution between 5 to 7 years, inclusive. What is the probability that a randomly chosen engineering student will stay at most 6 years?

asked 2021-11-15

The probability is

(Round to two decimal places as needed.)

b. What is the probability that a randomly selected household has more than one television?

The probability is

(Round to two decimal places as needed.)

c. What is the probability that a randomly selected household has at least one television?

The probability is

(Round to two decimal places as needed.)

\(\begin{array}\ Number\ of\ Televisions&Number\ of\ Households\\0&5\\1&36\\2&49\\3&30\\4&12\\5&12\\6&6\\Total&150 \end{array}\)