A video game company sells an average of 132 games a month per store, with a standard deviation of 9 games. The company is looking to reward stores that are selling in the top 7%. How many video games must a store sell in order to be eligible for a reward if the company is only looking at 36 of their stores.

Q: a successful basketball player has a height of 6 feet 9 inches, or 206 cm. Based on statistics from…

A: Given,           Z -score=4.45           A basket ball player has a height of  6 feet 9…

Q: A random sample of 54 four-year-olds attending day care centers provided a yearly tuition average of…

A: Given n=54 X-bar=3912 Standard deviations=615

Q: The year Martina graduated college, she got a job as an entry-level software engineer working for a…

A: GivenMean(μ)=57000standard deviation(σ)=3700starting salary (x)=65000

Q: For the 2017 romantic comedy film, The Last Jedi, 300,000 IMDB viewer ratings show a mean of 7.2…

A: The known values are, The value of k is,

Q: A quiz consists of 20 true or false questions. If the student guesses on each question what is the…

A: Solution: Let X be the number of correct answers and n be the number of questions. Since the…

Q: Do the students ever make up information for an assignment? You be the judge. Students in an applied…

A: The mean and standard deviation is μ=65σ=7 Now, for case X=42, The required probability can be…

Q: Corey and Noah began arguing about who did better on their tests, but they couldn't decide who did…

A: Note: Hi there! Thank you for posting the question. Here to avoid the plagiarism issue we have used…

Q: A pharmaceutical company claims that a drug is effective in treating 90% of people having severe…

A: It is given that the random variable follows a binomial distribution with n=6 and p=0.9.

Q: 95% of 80 freshman history students scored between 70% and 80% on a take home quiz. If this data is…

A: Given,  n=80 α= (1-0.95) =0.05 Let X denote the score of freshmen. As per t-distribution table, the…

Q: The mean life of a battery is 50 hours with a standard deviation of 6 hours. The manufacturer…

A:

Q: Mary Bartel, an auditor for a large credit card company, knows that, on average, the monthly balance…

A: The standard deviation is 56. Mary audits 50 accounts. That is n=50

Q: he mean life of a battery is 50 hours with a standard deviation of 7 hours. The manufacturer…

A: Given data,Mean μ=50standard deviation σ=7P(X<40)=?

Q: The operation manager at a tire manufacturing company believes that the mean mileage of a tire is…

A: The sampling distribution of sample mean follows the normal distribution, if the population is…

Q: Rochester, New York averages μ = 21.9 inches of snow for the month of December. The distribution of…

A: Consider X be a random variable which, follows normal distribution, indicates the pay off by the…

Q: In a medical study, a researcher wishes to select respondents in the middle of 45% of the population…

A: Given, In a medical study, a researcher wishes to select respondents in the middle of 45% of the…

Q: Nate and Brendan began arguing about who did better on their tests, but they couldn't decide who did…

A:

Q: A tire company finds the lifespan for one brand of its tires is normally distributed with a mean of…

A: GivenMean(μ)=48200standard deviation(σ)=5000

Q: A mathematics professor gives two different tests to two sections of his college algebra courses.…

A: The z-score of a random variable x is defined as follows: z = (x – µ)/σ. Here, µ and σ are the…

Q: Full-time college students report spending a mean of 29 hours per week on academic​ activities, both…

A: Givenmean(μ)=29standard deviation(σ)=4sample size(n)=64

Q: The weights of college football players are normally distributed with a mean of 193 pounds and a…

A: Mean = 193 Standard deviation = 53

Q: An Internet provider contacts a random sample of 300 customers and asks how many hours per week the…

A:

Q: In a survey of a group of men, the heights in the 20-29 age group were normally distributed, with a…

A: To determine: To determine how may would you expect to be taller than 71 inches . Given data: In a…

Q: The cafeteria records that 67% of students buy pizza with a standard deviation of .03 If you took a…

A: Given: p=67% and σ=0.03. Now, if a sample of 100 is taken, then standard deviation of sample will…

Q: An incoming freshman took her college’s placement exams in French and mathematics. In French, she…

A:

Q: A laptop producer has been getting complaints on the batteries they install. Particularly, the…

A: probability of overheating =P =9/20 =0.45 Let x be the random variable denoting the number of…

Q: Ashley and Delaney began arguing about who did better on their tests, but they couldn't decide who…

A:

Q: Jeffrey, as an eight-year-old, established a mean time of 16.43 seconds for swimming the 25-yard…

A: Given n=15 x=16σ=0.8μ=16.43α=0.05

Q: Salomé and Latasha began arguing about who did better on their tests, but they couldn't decide who…

A: Given that  Salome's test grade  Mean = 73.7 , Standard deviation = 10 Social studies = 80.8…

Q: in a group of 230 tests, how many students score within one standard deviation of the mean?

A: The probability that the students score within one standard deviation of the mean will be:…

Q: has averaged 7.48 mg/L with a standard deviation of 1.6 mg/L. If 10 students measure the sulfate in…

A: Given: sample size, n = 10Mean, μ =7.48std. deviation, σ = 1.6

Q: A manager is interested in finding the average number of sales per day at a sporting goods store. If…

A: Obtain the sample size. The sample size is obtained below as follows: The formula of sample size is,…

Q: Skye High School has a total of 500 graduates.  The mean SAT score of Skye High School graduates is…

A: Given data,μ=947σ=205P(X≥1000)=?

Q: In a recent survey, 80% of the community favored building a police substation in their neighborhood.…

A:

Q: 4.15. If the local restaurants in a small town record an average of 92 customers a day, with a…

A:

Q: Recently, a random sample of 25–34 year olds was​ asked, "How much do you currently have in​…

A: Class Interval Frequency(f) Midpoint (x) f.x fx2 0-199 342 (0+199)/2= 99.5 34029 3385885.5…

Q: Eureka is a weather station in the state of California and Seabrook is a weather station in the…

A: Given information: Temperature recorded at Eureka was 240 Celsius. Temperature recorded at Seabrook…

Q: A class has an equal number of boys and girls. The boys all got 78% on a test and the girls all got…

A: From the provided information, Boys got 78% on a test and girls got 84%. Let n = number of girls =…

Q: What is the probability that the jewelry store will have to pay off on its promise?

A:

Q: According to a study, the salaries of registered nurse are normally distributed with a mean of 56310…

A: Given,mean(μ)=56310standard deviation(σ)=5038

Q: A second species of extra-terrestrial has a mean height of 71cm and a standard deviation of 5.3cm.…

A:

Q: Mariah and Amanda began arguing about who did better on their tests, but they couldn't decide who…

A:

Q: according to police sources, a car with a certain protection system will be recovered 90% of the…

A: Given problem is a binomial distribution with:

Q: If a gambler places a bet on the number 7 in​ roulette, he or she has a​ 1/38 probability of…

A:

Q: The mean IQ of 200,000 current and past University of Manitoba students has been found to be 81.9.…

A: Given: Population mean μ=81.9 Population standard deviation σ=13.1 Number of people in 2016 = 29987…

Q: At their​ inauguration, the ages of the first six​ (out of a current number of​ 45) presidents of a…

A: First we will find the sample standard deviation the steps are as follows1) Step 1: Find the mean of…

Q: In a multiple-choice examination in Chemistry, students Mikasa and Jean received scores of 82 and…

A: Given problem Given that   In a multiple-choice examination in Chemistry, students Mikasa and Jean…

Q: he management of a national automobile manufacturer advertises a free transmission if it fails. The…

A:

Q: Would it be reasonable to use the standard deviation formula?

A: here  According to a gallup survey of boys 77% of boys had played computer games in the past week…

Q: In a study of Ridge View's boys' basketball team, the average height is 68 inches and standard…

A: Given that, In a study of Ridge view's boys' basketball team, the average height is 68 inches and…