in a recent survey, 75% of the community favored building a police substation in their neighborhood. If 14 citizens are chosen at random, find the probability that exactly 8 of them favor the building of the police substation. The probability that an individual is left-handed is 0.15. In a class of 50 students, what is the mean and standard deviation of the number of left-handers in the class?

Q: 6. The size of fish is very important to commercial fishing. A study conducted in 2012 found the…

A: From the provided information, Mean (µ) = 42.1 cm Standard deviation (σ) = 2.98 cm X~N (42.1, 2.98)…

Q: a certain presidential election, Alaska's 40 election districts averaged 1,953.8 votes per district…

A: given data, bell- shaped distribution μ=1593.8σ=572.2x= number of votes for this candidate for an…

Q: Suppose that NBA players average 34.4 points per game with a standard deviation of 8.65. A random…

A: GivenMean(μ)=34.4standard deviation(σ)=8.65sample size(n)=138

Q: According to the Department of Education, 60% of college students enjoy taking Statistics. Suppose…

A: Let  X be the number of students who enjoy taking Statistics in a sample of 200. Given n = 200…

Q: A research firm conducted a survey to determine the average amount of money consistent smokers spend…

A: We have given that,  Let X be a random variable from normal distribution with mean(μ) = 20 and…

Q: A civil engineer takes a public ride going to his firm. The average time for his trip is 24 minutes,…

A: Given Information: Population mean (u) = 24 minutes Standard Deviation (s) = 3.80 minutes Target…

Q: A student takes a multiple choice exam with 10 questions, each with four possible selections for the…

A: Given that, A student takes a multiple choice exam with 10 questions, each with four possible…

Q: About 1% of the population has a particular genetic mutation. 187 people are randomly selected.…

A: Obtain the mean for the number of people with the genetic mutation in such groups of 187. The value…

Q: 3. The weight of house cats is normally distributed with a mean weight of 13 pounds and a standard…

A: Given : μ = 13 σ = 2.9 Let the weight of house cats be X. X ~ Normal(μ = 13, σ = 2.9)

Q: Georgia residents spent an average of $470 on the lottery in 2010, or 1% of their personal income…

A: Given: Population mean amount spentx¯=$470 Population standard deviation σ=$50 Sample size of…

Q: About 9% of the population has a particular genetic mutation. 400 people are randomly selected. Find…

A: Consider that p is population proportion of genetic mutation.

Q: McPhilly is conducting a study on the amount of money a customer spends on each visit to the…

A: As per our guidelines we are supposed to answer only one question per post Given that, Mean (u) = 11…

Q: find the mean, variance, and standard deviation   Twenty-one percent of U.S. employees who are late…

A: The value of mean is 0.84, which is obtained as follows:

Q: According to the study, the average number of hours that the student spent studying per week in the…

A: From the provided information, Mean (µ) = 56 hours Standard deviation (σ) = 14 hours X~N (56, 14)

Q: In a Godiva Chocolate Shop, there are different sizes and weights of boxes of truffles. a. Find the…

A: a. Given: μ=283σ=1.6 The probability that a box of truffles weighs between 283 and 285.4 grams…

Q: The starting salary for a computer programmer major has a mean of $39,269 and a standard deviation…

A: Note: Hey there! Thank you for the question. Although the mean and standard deviation of the…

Q: According to The World Bank, only 9% of the population of Uganda had access to electricity as of…

A:

Q: The probability that an individual is right-handed is 0.87. In a class of 100 students, what is the…

A:

Q: Of the 500 people who took the civil servant acceptance test in one government agency, the average…

A: We have given that  Mean=67.5 Standard deviation=5.2  Find A) P(55.6<x<61)B) P(x>65)

Q: A group of statistics students decided to conduct a survey at their university to find the average…

A: Given Information: Sample size n=144 Mean μ=20 Standard deviation σ=10 Required: To find the…

Q: About 8% of males are color blind. Suppose we take a random sample of 100 men and count the number…

A: From the provided information, Number of trial (sample size) (n) = 100 The probability of success…

Q: McPhilly is conducting a study on the amount of money a customer spends on each visit to the…

A: Note:  Since we only answer up to 3 sub-parts, we'll answer the first 3. Please resubmit the…

Q: The average price of a college math textbook is $151 and the standard deviation is $26. Suppose that…

A: Given Data: Let X represent the random variable X~ Normal (151, 262)   n=42 Therefore, X¯~ Normal…

Q: In a study of work patterns, data from 669 subjects were collected. For the time spent in child…

A: We have given that,  Let X be the random variable from normal distribution with mean (μ) = 23.08,…

Q: High school girls average 80 text messages daily. Assume the population standard deviation is 15…

A: Given information:

Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…

A: We are given,μ = 196σ = 22n = 60

Q: A survey showed that 75% of adults need correction (eyeglasses, contacts, surgery, etc.) for their…

A: From the provided information, Sample size (n) = 11 75% of adults need correction for their eyesight…

Q: It has been determined that there is a 75% chance of a person using their seatbelt when sitting in…

A: probability of a person using their seatbelt when sitting in the back seat of a car(p)=0.75sample…

Q: A survey was given to people living in Broward County. The county randomly collected the income…

A: given data  μ = 100000 $σ = 10000 $P(90000<x<110000) = ?

Q: About 10% of the population has a particular genetic mutation. 1000 people are randomly selected.…

A: Binomial distribution is a discrete distribution that deals with the probabilities of success and…

Q: According to a recent​ study, 80% of adults say they play games on their smartphone. Suppose we…

A: The provided data is, p = 0.80 n = 200 The mean and standard deviation of the population proportion…

Q: The results of a calculus exam are normally distributed with a mean of 76 and a standard deviation…

A: GivenMean(μ)=76standard deviation(σ)=6

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A:

Q: The percent fo Coloradans that own a Subaru is 56%. If you were to take a random sample of size 70,…

A: We have given that,  Let X be the random variable from binomial distribution with probability (p) =…

Q: 3) An F-1 race has an average length of 305 kilometers with a standard deviation of 72 kilometers.…

A:

Q: 2. The average IQ of college students is 126 and the standard deviation is 15. 1. Determine the…

A: Given,Mean μ = 126Standard deviation σ = 15

Q: César Chávez Day is observed in the United States on March 31 each year. It celebrates the birthday…

A:

Q: The amount of time people spend at the gym follows a uniform distribution from 45 to 90 minutes.…

A: From the provided information, The amount of time people spend at the gym is uniformly distributed…

Q: Suppose that the number of hours that an adult watches in a day has a mean of 2.4 hours and a…

A: Given: i. Calculate the corresponding Z score as follows: The diagram corresponding to the mean…

Q: Suppose that we know that 33.8% of the people born in the United States between 1936 and 1951 have…

A: