A surgery has a success rate of 75%. Suppose that the surgery is performed on three patients.  a) what is the probability that the surgery is successful on a lest 2 patients?  b) on average, how many surgeries can we expect to be successful if performed on a group of three patients?  c) what is the standard deviation of the number of successful surgeries performed on a group of three patients?

Q: A choice answer exam (4 choices per question) has 10 questions. A student who has not studied at all…

A: Given  n = 10 (number of questions), k = 7 (number of correct answers), and p = 1/4 (probability of…

Q: bag contains many hats of several colors 100 John's I made from this without replacement. suppose…

A: Given that ;  μ = 40 ? = 5 n = 100 By using standard normal distribution we solve this problem.

Q: 16) Suppose 80% of all flights by an airline are on time. Out of a random sample of 50 flights: a)…

A: The random sample size of flights, The proportion of all flights by the airline that are on time,

Q: Assume that different groups of couples use a particular method of gender selection and each couple…

A: Given Information : Assume that different groups of couples use a particular method of gender…

Q: V. Lifespans of Monarch Butterflies are normally distributed, with a mean lifespan of 30 days and a…

A: A continuous random variable X is said to follow Normal distribution with parameters μ and σ2 if…

Q: 6. An airline data shows that the weight of baggage of passenger is normally distributed. It is…

A:

Q: AT scores in one state is normally distributed with a mean of 1587 and a standard deviation of 176.…

A:

Q: Assume that 13% of people are left-handed. We select 4 people at random. a) How many lefties do you…

A: given data  P(left handed) = p = 0.13 select n = 4 peoples x = no of left handed people

Q: Question 2 Assume that a human pregnancy has a population mean of 280 days and a population standard…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: b) Find the probability that a randomly selected male in the US between the ages of 40 and 49 has a…

A:

Q: Suppose that a poll of 18 voters is taken in a large city. The random variable x denotes the number…

A: Solution-: Given: n=18,p=0.43 (Or 43%) What is the mean and standard deviation of X?

Q: Let Y be the number of quizzes win by the team. What are the possible values of Y?    What is the…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: A municipality is planning a new residential area with 3,000 households. The municipal executive…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: The average cholesterol content of a certain brand of egg is 215 milligrams and the standard…

A: cholesterol content of a certain brand of egg has: Mean 215 mg standard deviation 15 mg The…

Q: An economics instructor observed that the marks in his Money and Banking course are normally…

A:

Q: Last NBA season, Rudy Gobert of Minnesota Timberwolves had the league's highest field goal…

A: The given data is as follows:Percentage of highest field goal is Sample size, X is the number of…

Q: A test consists of 10 true/false questions. To pass the test a student must answer at least 8…

A: A test consists of 10 true/false questions.  i.e. n=10  If a student guesses on each question then…

Q: A grocery store's receipts show that Sunday customer purchases have a skewed distribution with a…

A: (a)   Obtain the probability that the student’s revenue were at least $8,400.   The probability that…

Q: Intelligence quotients (IQ scores) are normally distributed with a mean of 100 and a standard…

A: Given, Intelligence quotients (IQ scores) are normally distributed with a mean of 100 and a standard…

Q: Working in the garden pulling weeds/planting flowers burns an average of 200 calories per hour. If…

A: Suppose the random variable x defines the amount of calorie burnt by working in garden pulling…

Q: The following table represents the probability of the number of cars, X, owned by a college student.…

A:

Q: A student takes a multiple-choice test with 25 questions. Each question has 5 possible choices for…

A: a) From the given information, There are 25 questions. Each question has 5 possible choices for…

Q: A data center contains 1000 computer servers. Each server has probability 0.003 of failing on a…

A:

Q: The mean height of 6th grade students is 52 inches, with a standard deviation of 1.5 inches. a) Use…

A: Given data: Mean = 52 inches Standard deviation = 1.5 inches Empirical rule is given below:

Q: In a large restaurant an average 70% customers ask for water with their meal. A random sample of 10…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: can you explain how to standardize this? ste

A: Since you have asked multiple questions, we will provide the answer to the first question. In order…

Q: 2) Sideswipe Sam is a terrible driver. Assume that the probability that Sam will sideswipe a parked…

A: Given : Probability that Sam will sideswipe a parked car = p = 0.02 Let X denotes the number days…

Q: An average of 25 patients die in a day in a large hospital. a) Find the probability distribution,…

A: X~Poisson (λ)

Q: 42) The lengths of pregnancies are normally distributed with a mean of 270 days and a standard…

A: According to the given information in this questionWe need to answer two parts

Q: Earthquake tremors in a region occur 3.55 times every 30 days on the average. in the next 90 days,…

A: a) In every 30 days, the average is 3.55 In every 1 day, the average is 3.55/30  In every 90 days,…

Q: A population has mean of 750 and standard deviation of 80.  A sample of size 64 will be taken from…

A: Given,sample size(n)=64mean(μ)=750standard deviation(σ)=80

Q: ) What are the chances that the investment will result in a negative return? ii) What is the…

A: mean = 15 sd = 10

Q: Let � be a random variable that represents the weights in pounds (lb) of adult males who are in…

A: Answer:- Given, X has a normal distribution with mean μ = 167 lbs and standard deviation σ = 6 lbs.…

Q: ample of final exam scores is normally distributed with a mean equal to 20 and a variance equal to…

A: given data, normal distributionμ=20σ2=25σ=25=5we have to find out the given probabilities.

Q: In the US, 37.5% of US adults have graduated from college. Suppose we take a random sample of 12 US…

A: Given,n=12p=0.375q=1-0.375=0.625A random variable X~Binomial(n=12 ,…

Q: a) Find the probability of existence of a random sample (size 100) weight within + 5 lb. of…

A: a) Wild boar population weight has standard deviation of 50 lb. That is, σ=50. The probability of…

Q: A basketball player makes 70% of the free throws he shoots. Suppose that he tries 15 free throws.…

A:

Q: Use a normal approximation to find the probability of the indicated number of voters. In this case,…

A: It is given that variable X represents the number of eligible voters who voted. X~B (123, 0.22).

Q: The average price of cell phones manufactured by Ahmadi, Inc. is $100 with a standard deviation of…

A:

Q: A certain type of new business succeeds 30 % of the time. Suppose that three such businesses open.…

A: Solution: Let X be the random variable of new business succeeds . The probability of new business…

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.