4- Customers arrive at Speedy Oil Change at the rate of 9 per hour. What is the probability that exactly seven customers arrive at Speedy's in the next hour?

Q: A group of 4 boys and 4 girls are going to sit together in a row of 8 theater seats. They run into…

A:

Q: A committee of 4 is being formed randomly from the employees at a school: 4 administrators, 30…

A: Combination:   It is nothing but the selection of objects where the order of selection is not…

Q: A 'hundred-year flood' is a weather event which is supposed to happen with a probability of 0.01 or…

A: Introduction: Denote X as the random variable if interest here, which is the number of times the…

Q: A group of students consists of 5 females and 10 males. If 8 students are to be selected at random…

A: We have to use classical probability definition to find the probability.

Q: What is the probability that a server will wait more than 7 minutes to greet the next customer…

A: Given that It is given that an average of 28 customers/hour arrive. Mean( λ)=28 We have to find  the…

Q: The table data: 15 1.75 13 1.63 11 1.5 9 1.35 7 1.19 5 1.01 3 0.78

A: As per our guidelines, we are allowed to answer three sub-parts. Thanks    The following data are…

Q: A scientist inoculates mice, one at a time, with a disease germ until he finds 3 that have…

A: From the given information, Let random variable X represents the number of mice to be inoculated to…

Q: During the past year in the maternity ward of a hospital in a large city, 1092 males were born and…

A: It is given that No. of males born = 1092No. of female born = 1389Total babies born = 2481

Q: Mark buys a bag of cookies that contains 5 chocolate chip cookies, 6 peanut butter cookies, 5 sugar…

A: Number of chocolate chip cookies=5 Number of Peanut butter cookies=6 Number of sugar cookies=5…

Q: Suppose a jar contains 18 red marbles and 36 blue marbles. If you reach in the jar and pull out 2…

A: From the provided information, A jar contains 18 red marbles and 36 blue marbles. Total marbles = 18…

Q: A group of people were asked if they had run a red light in the last year. 278 responded "yes", and…

A: Given: Number of people run red light, n(A)=278 Number of people didn't run red light, n(B)=677…

Q: What is the probability that a card drawn randomly from a standard deck of 52 cards is a black nine?…

A: Total no. of cards in a deck =52No. of black 9 cards in a deck =2i.e., 1 from black spade and 1 from…

Q: Assume that when adults with smartphones are randomly selected, 43% use them in meetings or classes.…

A:

Q: ssume that when adults with smartphones are randomly​ selected, 49​% use them in meetings or…

A: X is a random variable that such that each outcome of the random variable can be classified based on…

Q: Suppose a jar contains 8 red marbles and 23 blue marbles. If you reach in the jar and pull out 2…

A: Given that, A jar contains 8 red marbles and 23 blue marbles. Total number of marbles = 8+23 = 31…

Q: If you are dealt 3 cards from a shuffled deck of 52 cards, find the probability that all 3 cards are…

A: According to the given information, we have Total number of cards = 52

Q: Suppose that jurors are selected randomly from an adult population. What is the probability that all…

A:

Q: You are pulling from a bag containing 2 blue marbles, 3 black marbles, 2 green marbles, and 1 yellow…

A: Total number of marbles=2+3+2+1=8 Number of blue marbles=2 Required probability =(Number of possible…

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.