When using a computer to randomly generate the last digit of a phonenumber to be called for a suvey, there is 1 chance in 10 that the last digit is 0

Q: Suppose that a bag of toy marbles contains 20 small marbles and 5 large marbles. What is the…

A: It is given that Small marbles = 20Large marbles = 5Total marbles = 25

Q: 2. If a number between 1000 and 9999 is chosen uniformly at random, there is a chance that chance…

A: Let us define some events  A : A number between 1000 and 9999 is palindrome.  B : A number between…

Q: o researchers, the mean length of imprisonment for motor-vehicle-theft offenders in a nation is 15.1…

A:

Q: Suppose that a pond contains 50 fish of which 30 are redfish. If we catch 10  with replacement,…

A: 30 of 50 fishes in the pond is redfish. So, probabiility of getting a redfish = 30/50 = 0.6. Hence…

Q: Suppose that in a year of 365 days, it rains on 87 days. There is lightning on 15 days. There is…

A: In question, Given that in a year 365 days, it rains on 87 days, lightning on 15 days and both…

Q: Suppose the discrete random variable of interest, x, is the number of rolls that result in a…

A:

Q: When a new drug is created, the pharmaceutical company must subject it to testing before receiving…

A: Given:   Null Hypothesis: The Drug is unsafe   Type 1 Error: Type 1 error occurs when we reject the…

Q: Suppose that in a year of 365 days, it rains on 34 days. There is lightning on 19 days. There is…

A: Given that ; N = 365 days Rains = 34 days  Lighting = 19 days  Both = 12 days By using the basic…

Q: Suppose that a group has a capacity of at most 320 people. 1750 invitations to joint the group are…

A: See the hand written solution

Q: A poll is given showing 80% are in favor of a new project if 5 people are chosen at random, what…

A:

Q: find the probability that of 25 randomly selected people atleast two have the same birthday

A: The random sample of selected people,Total number of days in a year

Q: Suppose the spinner shown to the right is spun once, to determine a single-digit number, and we are…

A: All sectors of the spinner are the same size and each sector represents a single number. E be the…

Q: If n people are present in a room. How large n need to be so that the probability of no two of them…

A:

Q: you take 5 draws from U(9,15). Consider the random variable that equals the 2nd smallest of the 5…

A: Let X1, X2, X3, X4, X5 be the sample drawn from the distribution U9,15. Denote the order statistics…

Q: Assume that when adults with smartphones are randomly selected 57% use them in meetings or classes…

A: The given sample size is 7 and probability of randomly selected adult use smartphones in meetings or…

Q: east 1 Democrat. What is the probability that the new subcommittee will c

A: There are 7 republicans and 10 democrats.  Therefore, the total subcommittee of 5 members is C517.…

Q: There 14 students in the class and 6 of them like Chopin. If 5 students are selected at random, what…

A: Given,no.of students who like chopin(M)=6no.of students selected at random(n)=5Total no.of…

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.