The number of Facebook friends students at a university have are Normally distributed with a mean of 1200 and a standard deviation of 200. What percentage of students has exactly 1000 Facebook friends?

Q: lue Hill and Arroyo Seco are schools in different states. Laura is a student at Blue Hill and is 58…

A: X=Laura's Y= Lisa's

Q: Brandon Mackinnon is considering 3 investment options for his $10,000 savings from working as a…

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

Q: Two out of 8 students at a local college say that they skip dinner in the evening. Find the mean,…

A: Given that  Success of probability p =2/8=0.25 Number of trials n=20 X~binomial (n,p)

Q: A sample of n = 9 has s = 3.  What are the correct values for S.S. and s2? -SS = 81; sample…

A:

Q: c. Find the p-value. Round to 4 decimals. p-value = d. Make a decision. O Fail to reject the null…

A: Given : Mean : x1 = 46.9x2 = 36.2 standard deviation : σ1 = 12.4σ2 = 15.3 Sample size : n1 = 124n2 =…

Q: In New York State, the population of teachers is known to have an average of 12.2 years of classroom…

A:

Q: What are the mean and standard deviation for the sample mean number of app engagement by a tablet…

A:

Q: The We Go Farther Tire Company advertises a tire that lasts for 80,000 miles. The mileage for the…

A:

Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

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

Q: population has a mean of 350 and a standard deviation of 25, determine the probability that a random…

A: GIVEN DATA, μ=350σ=25n=40p(335<x¯<375)=?

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: statistics professor reported that the mean score in a recent quiz is 72 and the standard deviation…

A: Solution

Q: The heights of adult men in America are normally distributed, with a mean of 69.5 inches and a…

A: 69.5 2.62 64.4 2.53 American woman:

Q: The mean height of male college students in a large city is 68 inches and the standard deviation is…

A: Solution

Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

A: Let X be the length of the steel rods. Then X~N (144.3,0.8) i.e. µ=144.3 and σ=0.8

Q: Furnace repair bills are normally distributed with a mean of 263 dollars and a standard deviation of…

A: Here, µ = 263 and σ = 25.

Q: Suppose that Sacramento workers have a mean commute of 17 minutes and commute times are normally…

A:

Q: Hogie lizards have tail lengths that are normally distributed with a mean of 22.5 cm and a standard…

A:

Q: The SAT scores of all freshmen accepted at State University are normally distributed, with a mean of…

A: Let X be the random variable of SAT scores of all freshman. Given Data: E(X)=1050 SD(X)=120 X~…

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: Runner’s World reports that the times of finishers in a 10 km run are normally distributed with a…

A: Let us denote X=The times of finishers X follows a normal distribution with mean=61 and standard…

Q: The honors program at Brads University only except students with an entrance score exam over 400.…

A:

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: high temperatures in Chicago during the month of October have a mean of 64 degreesand a standard…

A: A z-score is known as the standard score that determines how much the data point deviates from the…

Q: Nationally the average score on the college entrance exams (Verbal test) is 453 with a standard…

A: Consider that μ is the population mean score. Null hypothesis: H0: μ = 453. Alternative hypothesis:…

Q: students has an average of 300 dollars and a standard deviation of 1,000. Suppose that we take a…

A: It is given that the random variable X i.e, the amount of money in savings accounts follow normal…

Q: On Bob's last history test, he had a score of 92.  Bob's z-score was -0.5, and the test's standard…

A: Solution -Given that Score in History test be X=92 Z- Score=-0.50 Standard deviation= 6 Find mean…

Q: A line for tickets to a broadway show had a mean waiting time of 20 minutes with a statistic…

A: Given: Mean,  μ=20 Standard deviation, σ=5 Sample size, n= 200 Use normal approximation here, the…

Q: According to the American Red Cross, 11.6% of all Connecticut residents have Type B blood. A random…

A: The question is about discrete probability distributionGiven :Probability of all CT residents have…

Q: A nursery sells trees of different types and heights. These trees average 50 inches in height with a…

A: The problem is asking us to find the standard deviation for the sample mean. In statistics, the…

Q: The average daily low temperature in December in Cincinnati, Ohio is 26.6 degrees with a standard…

A: Given  mu=mean=26.6,sigma=sd=8 Let X be the temperatures  X~N(mu=26.6, sigma^2=8^2)

Q: The Wechsler IQ test is normally distributed with mean 100 points and standard deviation 15 points.…

A: Solution let Xdenote Wechsler IQ test is normally distributed with mean 100 points and standard…

Q: percent of men meeting these height requirements.

A: Assume that the heights of American men are normally distributed with a mean of 69.0 inches and a…

Q: The incubation time for Rhode Island Red chicks is normally distributed with mean of 22 days and…

A: From the provided information, Mean (µ) = 22 Standard deviation (σ) = 3 Sample size (n) = 1000

Q: art professor gives an A to any student in the top 9% of the distribution. The grades are normally…

A: Given X~N(mean μ=60, standard deviations σ=5) P(X>b)=9%

Q: The mean gas mileage for cars driven by the students at Chillville High Schoo is 28.0 miles per…

A: Normal distribution is continuous distribution which has many real life applications. Standard…

Q: Advertising aimed at teenagers tends to contain dance-beat music, adventure, and a fast pace rather…

A: To test the given claim the appropriate hypothesis are as follows H0:p1-p2≥0.1H1:p1-p2<0.1 The…

Q: A running back on the Spartans football team gains an average of 3.5 yards per carry with a standard…

A: Given : A running back on the Spartans football team gains an average of 3.5 yards per carry with a…

Q: There is one male baby seal for every nine female baby seals. What is the average number of male…

A: p=P(male baby seal ) = 1/9 n=5