30% of the customers at XYZ stores use debit card for their purchases. In a recent market research study, 18 of the store’s over 20000 customers was randomly selected. Define the following random variable: X := Number of customers using debit card to pay their fees. 1. What is the probability that 5 of the 18 customers selected use a debit card to pay for their purchases? 2. What is the probability that at least 3 of the 18 customers selected use debit card to pay for their purchases? 3. What is the probability that at most 3 of the 18 customers selected use debit card to pay for their purchases?

Q: 30% of the firm's orders are from first time customers. Consider random sample of 84 orders. Find…

A: Given,n=84p=0.30

Q: In a survey it was found that 10% of the voters had considered running for the school board.  It was…

A: Let V be the event that selected person voted in the last school board election, R be the event that…

Q: It is known that a certain basketball player will successfully make a free throw 90.71% of the time.…

A: From the given information,P = 90.71%= 0.9071So, q = 1- P = 1-0.9071 = 0.0929n = 11we have to find…

Q: The coach of a running team thinks that 45% of athletes can run a mile in under 7 minutes. A simple…

A: Given problem Given that   The coach of a running team thinks that 45% of athletes can run a mile…

Q: Suppose the first generation Apple iPad has 5% chance of being defective. What is the probability…

A: From the provided information, Apple iPad has 5% chance of being defective that is p = 0.05 Sample…

Q: On average, 5.5 shoplifting incidents occur per week at an electronics store.  What is the…

A: Poisson Distribution :  A Poisson distribution is a discrete probability distribution that applies…

Q: A survey showed that 82% of adults need correction​ (eyeglasses, contacts,​ surgery, etc.) for their…

A: 82% of adults need correction​ (eyeglasses, contacts,​ surgery, etc.) for their eyesight. 19 adults…

Q: Of the cartons produced by a​ company, 7​% have a​ puncture, 4​% have a smashed​ corner, and 1.1​%…

A: It was stated that the cartons produced by a​ company, 7​% have a​ puncture. The cartons produced by…

Q: The Statistical Abstract of the United States reported that 18.2% of students whose post secondary…

A: Let X be the number of students whose post secondary degrees were health professions and related…

Q: A study showed that ​69.7% of occupants involved in a fatal car crash wore seat belts. Of those in a…

A:

Q: A labor statistician claims that 6% of the labor forces will be laid off likely  to pandemic impact.…

A: Solution: According to the labor statistician's claim, 6% of the labor forces will be laid off…

Q: A study of 180 randomly selected American Airlines flights showed that 68 arrived late. What is the…

A: No. of American flights =180 No. of american flights arrived late=68

Q: n the toal US population, it is believed that only 12% of adults are lactose intolerant. if 200 US…

A: In this case, each considered US adult has the only options of being "lactose intolerant" (defined…

Q: Of the cartons produced by a​ company, 4​% have a​ puncture, 7​% have a smashed​ corner, and…

A: Given that, 4% have a puncture 7% have a smashed corner 1.3% have both a puncture and a smashed…

Q: In a study done in my chicken coop, 82% of my birds enjoy eating earwimgs. Chose 7 at random. FIND…

A: The provided information are: Probability of success (p)  = 82% = 0.82 Number of birds chosen (n) =…

Q: etter than those without cats? To help answer this question, a cat enthusiast obtained a random…

A: Do you have a Cat? Yes No How well do you sleep? Good Neutral Bad     Good…

Q: A study shows that 46% of teachers have gone through a lot of stress since April, due to the…

A: We have to find out given probabiity..

Q: A new surgery is successful 80% of the time. If the results of 6 surgeries are randomly sampled,…

A:

Q: In a study, 42% of adults questioned reported that their health was excellent. A researcher wishes…

A: Let us denote X=the number of people with excellent health.n=sample size=13p=probability of…

Q: Of the cartons produced by a​ company, 7​% have a​ puncture, 10​% have a smashed​ corner, and 1.1​%…

A:

Q: What is the probability that a randomly selected participant tasted apples and preferred…

A: Followings are the Explanation of the question 1) Probability is ratio of Number of favorable cases…

Q: A sample of 3 medicine bottles is taken from an injection molding machine that is 10% nonconforming.…

A: Given,Sample size, n = 3Probability of success, p = 10% = 0.10Let X be a random variable represents…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.