Los Angeles workers have an average commute of 34 minutes. Suppose the LA commute time is normally distributed with a standard deviation of 14 minutes. Let X represent the commute time for a randomly selected LA worker. Round all answers to 4 decimal places where possible. a. What is the distribution of X2 X N b. Find the probability that a randomly selected LA worker has a commute that is longer than 39 minutes. c. Find the 85th percentile for the commute time ofLA workers minutes

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: The Bank of Connecticut issues Visa and MasterCard credit cards. It is estimated that the balances…

A: Given: μ=830σ=260

Q: Sweet Glee is an ice cream shop chain that has locations all across the nation. Customers at Sweet…

A:

Q: a) the distribution of the mean? b) the probability that the sample mean is less than 15.6 mm? c)…

A: Let , X→N(μ=12 , σ=4) , n=16 Our aim is to find the following :  a) the distribution of the mean? b)…

Q: Let X denote the lifespan for a randomly selected fly. Suppose the mean and the standard deviation…

A: let X: the lifespan for a randomly selected fly  and mean of X=E(X)=μ=25 days    standard deviation…

Q: n a recent​ year, the scores for the reading portion of a test were normally​ distributed, with a…

A: Given that, Mean = 22.9 Standard deviation = 6.7

Q: The manager of a computer retails store is concerned that his suppliers have been giving him laptop…

A:

Q: In a large section of a statistics​ class, the points for the final exam are normally​ distributed,…

A: Given μ= Mean =71 σ= standard deviation =8  Top​ 10% receive​ A's  Next​ 20% received​ B's Middle​…

Q: Assume that X, the starting salary offer for psychology majors, is normally distributed with a mean…

A: Given,mean(μ)=47,507standard deviation(σ)=5,000

Q: Find the probability that a sample of 18 has a sample mean below 32. The population mean is 24 and…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: Suppose that the average amount of ice cream that children eat at birthday parties is 3.6 oz, with a…

A: a. Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: The Bank of Connecticut issues Visa and MasterCard credit cards. It is estimated that the balances…

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

Q: The manager of a computer retails store is concerned that his suppliers have been giving him laptop…

A: Thank you for posting the question. As your question has more than 3 parts, as per the policy, we…

Q: The amount of rain falling in Waimea Canyon State Park, Kauai is normally distributed with a mean of…

A: Let x¯ is defined as the mean rain of 16 randomly picked days which follows normal distribution. The…

Q: In a large section of a statistics class, the points for the final exam are normally distributed,…

A:

Q: I don't understand how to solve for this. I'm having trouble understanding the percentages

A: Let us define the random variable X as the points for the final exam that are normally distributed…

Q: The manager of a computer retails store is concerned that his suppliers have been giving him laptop…

A:

Q: b) The American Automobile Association reports that the average time it takes to respond to an…

A: Given  μ=38, σ=9.002 and n=80

Q: A radio station claims that the amount of advertising per hour of broadcast time has an average of…

A: The z-score formula is, z=x-μσ In the formula, x be the random variable, μ be the population mean,…

Q: A soft-drink dispenser can be adjusted to deliver any fixed number of ounces of soft-drink. If the…

A:

Q: A business owner usually requests freelancers to work with, where he pays his freelancers an average…

A: From the given information, the mean is 15.90 and standard deviation 1.50.

Q: n a large section of a statistics​ class, the points for the final exam are normally​ distributed,…

A: The mean incubation time 69 and standard deviation 8 The lowest score for A is calculated as…

Q: A normal distribution has a mean of u standard deviation of o = 12. For each of the follow- ing…

A: Given info: Here, mean, µ = 30 and σ = 12

Q: The commuting time for a student to travel from home to a university campus is Normally distributed…

A: Let X be the commuting time for a student to travel from home to a university campus is Normally…

Q: The amount of coffee that people drink per day is normally distributed with a mean of 14 ounces and…

A:

Q: Assume that the standard deviation of monthly rents paid by students in a particular town is $40. A…

A: The standard deviation of monthly rents paid by students in a particular town is σ=40 Random sample…

Q: A citrus farmer has observed the following distribution for the number of oranges per tree. The…

A: Given information- We have given the probability distribution for the number of oranges per tree.…

Q: A College Alcohol Study interviewed an SRS of 1000 college students about their drinking habits.…

A:

Q: A certain machine makes electrical resistors having a mean resistance of 50 ohms and a standard…

A: Percentage of resistor having exceeding resistanc 56 ohms =6.68%  # option(c) correct

Q: In a large section of a statistics class, the points for the final exam are normally distributed,…

A:

Q: Sweet Rush is an ice cream shop chain that has locations all across the nation, Customers at Sweet…

A: Solution-: Given: μ=1.40,σ=0.85,n=10 We find, (a) μX¯=? (b) σX¯=?

Q: Most exhibition shows open in the morning and close in the late evening. A study of Saturday arrival…

A: From the provided information, Mean (µ) = 2 hours and 2 minutes or 122 minutes Standard deviation…

Q: Suppose the results of a national sleep survey showed that on average, adults sleep 7 hours per…

A:

Q: The volume of cracker boxes are normally distributed, with a mean of 7 oz and a standard deviation…

A: It is given that:

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

A: Given,mean(μ)=67.7standard deviation(σ)=4

Q: In a large section of a statistics​ class, the points for the final exam are normally​ distributed,…

A: The mean incubation time 69 and standard deviation 18 The cutoff for A is calculated as follows:…

Q: The average student loan debt for collge graduates is$25,950. Suppose that that distribution is…

A:

Q: Q- For a sample of washers produced by a machine is normally distributed with mean inside diameter…

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: P(x) 0.186 1 0.362 0.295 3 0.128 0.027 4 5 0.002

A: From the provided information, The mean for the numbers of sleepwalkers in group of five can be…

Q: The amount of soda in a randomly selected bottle varies according to a normal distribution with mean…

A: Let x be the amount of soda in a randomly selected bottle varies which follows normal distribution…

Q: In​ 2008, the per capita consumption of soft drinks in Country A was reported to be 19.28 gallons.…

A:

Q: A company sells sunscreen in 500 milliliter (ml) tubes. In fact, the amount of lotion in a tube…

A: (a)

Q: The amount of cereal in a carton is listed as 18 ounces. The cartons are filled by a machine, and…

A:

Q: Multiple questions

A: Given dataMean = 71Standard Deviation = 8a)The Lowest Score for A grade is given by p-value will be…

Q: In the field of accountancy, times spent studying by students in the week before professional exams…

A: 1. a)  Probability that sample mean exceeds population mean by more than 2 hours is given by :…

Q: The average production cost for major movies is 58 million dollars and the standard deviation is 21…

A: Solution

Q: A survey of 1000 men ages 20 to 30 found that their heights were normally distributed, with a mean…

A: From the provided information, Mean (µ) = 65 inches Standard deviation (σ) = 2.5 inches

Q: The volume of cracker boxes are normally distributed, with a mean of 7 oz and a standard deviation…

A: It is given that:

Q: 9.- American women's height are approximately normally distributed with mean 63.8 inches and…

A:

Q: "An electrical firm manufactures light bulbs that have a length of life that is approximately…

A: Mean(µ) = 858 Standard deviations (σ) = 54 Sample size (n) = 50 X ~ N (µ, σ )= N ( 858, 54) x̅~ N…