A (large) group of people have formed a walking club.  Among all the members of the group, the average time it takes to walk a mile is 14 minutes, with a standard deviation of 1.5 minutes.  Suppose you take an SRS of ten group members.  What is the probability that the average of the time it takes to walk a mile of the people in your sample is less than 14 minutes? (Hint:  No calculation necessary)

Q: The average GPA at the University of North Carolina is 3.2, with a standard deviation of 0.3. Assume…

A: Given that.   X~N( μ , ?^2 )   μ=3.2     , ?=0.3   Z-score =( x - μ )/?

Q: A physical fitness association is including the mile run in its school fitness program. The time for…

A:

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: A particular fruit's weights are normally distributed, with a mean of 209 grams and a standard…

A: Population mean, μ = 209 gramsPopulation standard deviation, σ = 18 gramsLet, X, be the particular…

Q: Ryanair charges a mean base fare of $59. In addition, the airline charges for checking in at the…

A: The population standard deviation of total flight cost is known to be $25. An average $39 per…

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: On a particular college campus, 30% of the students belong to a fraternity or sorority. If 46…

A: Followings are the Explanation of the question Let X be the Number of the students belong to a…

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

A:

Q: The sizes of car loans in North Carolina have mean $8,452 and a standard deviation $467. The…

A: The mean is 8452 and the standard deviation is 467.

Q: hotel in a European city follows a normal distribution with a mean of 170 euros and a standard…

A:

Q: The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation…

A: Given that, the lengths of pregnancies are normally distributed with a mean of 266 days and a…

Q: If the mean height of a population of students is 68 inches with standard deviation 3 inches, what…

A: Given that      The mean height of a population of students is 68 inches with standard deviation 3…

Q: A manufacturer produces widgets that are packaged in boxes of 100. The probability of a widget being…

A: A manufacturer produces widgets that are packaged in boxes of 100. The probability of a widget being…

Q: he average price of a home in your community is $200,000 with a standard deviation of $30,240. A…

A:

Q: The average number of pushups a United States Marine does daily is 300, with a standard deviation…

A: Given data: Let X be the random variable distributed normally with parameter  ; Mean =300 Standard…

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: 500 freshmen at Arundel University took part in a math comprehension test. The scores were normally…

A: From the provided information, Population size (N) = 500 Mean (µ) = 75 Standard deviation (σ) = 7…

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

A: Given information:

Q: The College Board National Office recently reported that in 2011-2012, the547,038 high school…

A: a) The probability that a high school junior who takes the test will score at least 610 on the…

Q: If 70 shafts are sampled at random from the batch, what is the probability that the mean diameter of…

A: Let X be the random variable of the diameter of metal shafts produced in a manufacturing…

Q: According to AAA, the price of a gallon of regular, unleaded gas across gas stations in North…

A: Let X be the price of a gallon of regular, unleaded gas across gas stations in North Carolina is…

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: Body temperatures of healthy adults have a bell shaped distribution with a mean of 98.20℉ and a…

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

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: Blood pressure is distribued Normally, with a mean of 85 mm and a standard deviation of 20 mm. As a…

A: Given,mean(μ)=85standard deviation(σ)=20sample size(n)=100

Q: The number of automobile accidents per week in Toronto is normally distributed with a mean of 16.3…

A:

Q: The annual per capita consumption of bottled water was 30.5 gallons. Assume that the per capita…

A: We have given that.   X~N( μ , ?^2 )   μ =30.5 , ? =13   Z-score =( x - μ )/?   NOTE:- According to…

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: On a particular college campus, 29% of the students belong to a fraternity or sorority. If 44…

A: Let X be the number of students who belong to a fraternity or sororityn=44  is the number of…

Q: The average number of dropouts for a school district has been 300 per year with a standard deviation…

A:

Q: The lengths of pregnancies are normally distributed with a mean of 269 days and a standard deviation…

A: The problem presented involves a normal distribution of pregnancy lengths with a mean of 269 days…

Q: The lengths of lumber a machine cuts are normally distributed with a mean of 88 inches and a…

A: Given,Mean μ = 88Standard deviation σ = 0.6

Q: Assume the credit card balances of younger college educated employed persons are normally…

A:

Q: A normal population has a mean of 37 and a standard deviation of 8 A.What proportion of the…

A: Given Population mean μ=37, standard deviations σ=8

Q: The probability that Mugdho loses an arm-wrestling match against Snigdho is 60.0%. Let’s say,…

A:

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

A:

Q: The heights of strawberry plants are Normally distributed with a mean of 12 inches and a standard…

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: Solve the problem. Assume that mountain lions' weights are normally distributed with a mean of 62.6…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 62.6 ,…

Q: An online retailer operates two independent warehouses (A & B) where it keeps its inventory. Each…

A: Solution: given that Each warehouse has a .05 probability of experiencing a fire. If a fire is…