When Brooklyn commutes to work, the amount of time it takes her to arrive is normally distributed with a mean of 54 minutes and a standard deviation of 4 minutes. Using the empirical rule, what percentage of her commutes will be between 50 and 58 minutes?

Q: A data set includes data from student evaluations of courses. are n = 83, x= 3.85, s = 0.58. Use a…

A: Given that  Sample size n =83 Sample mean =3.85 Sample standard deviation =0.58

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A: It is given that Population : 4, 5, 6 Population size N = 3 Sample size n = 2

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A: Given Sample size = 10823 Standard deviation = 250.1

Q: Please calculate the expected value of y at t=3)

A: From given information: Time series is yt= 4t+ut+8  Also, Assumption: ut is identically…

Q: 13. In order to see whether people are keeping their automobile tires inflated to the correct level…

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Q: 2. According to the empirical rule, approximately what percentage of normally distributed deviations…

A: The empirical rule provides approximate percentage of data that lies between one SD, two SD and…

Q: Assuming that the scores of the student in a test are normally distributed with the mean of 40 and…

A: We have given that  Mean(µ) = 40Standard deviations (σ) = 6X ~ N (µ, σ )= N(40, 6)

Q: Find the expected value of the random variable. X 2 3 3 4 5 P(x) 0.2 0.4 0.2 0.2 What is the…

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Q: A football coach claims that the average weight of all the opposing teams' members is 225 pounds.…

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Q: esc on Hurricane damage: In August and September 2005, Hurricanes Katrina and Rita caused…

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Q: During one month, the rate for renting a particular car model was $65.94 per day plus 20¢ per mile.…

A: As per Bartleby guideline I can not do more than three sub parts The total cost = y Number of…

Q: b) Let X₁, X2, X3,...,Xn be a random sample of n from population X distributed with the f…

A: Given that, Xi , i = 1 ,2,....n follows Normal distribution with mean zero and variance θ.

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A: The following information has been provided: x¯=38n=22σ=8

Q: X y ble and the given regression equation to ansv parts (a)-(e). 3 y=5-5x O No Yes - 10 1 0 20 -5 a.…

A: Here we use the regression and correlation coefficient formula to solve this problem.

Q: You are interested in finding a 99% confidence interval for the average number of days of class that…

A: a. Suppose µ is the population average number of days of class that college students miss each year.

Q: Problem 2 Suppose that X and Y are independent and Z = X+Y. Find fz if { - -Az de-d 0 if z > 0…

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Q: A recent educational study shows 80% of students complete all of their homework assignments on time.…

A: Given Information: 80% of students complete their HW on time. Of the 80% who complete their HW on…

Q: The value ofr for 20 pairs of observations of two variables is-7. What is the possible value of R²…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: regression model involving 30 observations, the following estimated regression equation was…

A: Given that  The regression equation was obtained.ŷ = 170 + 34x1 – 3x2 + 8x3 + 58x4 + 3x5 SSR = 1740…

Q: Find the expected value E(X) of the following data.Round your answer to one decimal place.

A: The probability distribution of random variable x is given.

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Q: A clinical psychologist wanted to examine the relative effectiveness of cognitive-behavioral therapy…

A: Given data: CBT: 4 8 5 7 6 9 8 6 7 8 BT: 3 5 4 8 6 2 4 6 5 7 Sample sizes are: n1=10 n2=10…

Q: 5.a) Find the number of men getting wages between Rs. 5 and Rs. 35 from the following table: Wages…

A: Given: Wages No of men  0-10 9 10-20 30 20-30 35 30-40 42

Q: 4) The admitting office at Sisters of Mercy Hospital wants to be able to inform patients of the…

A: Given that: Population mean, μ=1240 Sample mean, x¯=1491 Standard deviation, s=342 Sample size, n=20…

Q: Example 3.6.4 Let X have the N(10, 16) distribution (ie. Ganssian distribution with mean 10 and…

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Q: The Simple Linear Regression model is   Y = b0 + b1*X1 + u   and the Multiple Linear Regression…

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Q: Select all of the characteristics of a standard Normal distribution.   Question options:…

A: Given that  Standard normal distribution

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A: If parametric statistics are used even though the assumptions are not met, we will get unreliable…

Q: Find the (a) mean, (b) median, (c) mode, and (d) midrange for the data and then (e) answer the given…

A: The mean of the data set is calculated as follows: Mean=49+60+60+...+450+2500+300024=$414.29

Q: What type of test would be ap are different from the average

A: From given data we have : sample size = 25 standard deviation = 5

Q: Q13: If X₁, X2, ..., X7 is a random sample of size 7 from a uniform distribution U(0,0). Calculate…

A: It is given that Xi, i = 1,2,...,7 follows Uniform(a = 0 and b = θ).

Q: Suppose that two players are playing the following game. Player 1 can choose either Top or Bottom,…

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Q: Given that a data set has a mean of  40 and a standard deviation of 4, find the percent of data…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: What does the following code do in R? hclust(dist(x),method='average')

A: R is the open source software. It used to determine the statistical analysis. It also used to make…

Q: Is the lottery fair? Powerball is a multistate lottery in which players try to guess the numbers…

A: Given that Observed Frequency and Expected Frequency table  Category  1-7 8-14 15-21 22-28 29-35…

Q: Let rt be a log return. Suppose that r0, r1, . . . are i.i.d. N(0, 0.01^2). (a) What is the…

A: we have given - rt be a log return. Suppose that r0, r1 . . . are i.i.d. N(0, 0.0001). a) since ,…

Q: Determine whether the value is a discrete random variable, continuous random variable, or not a…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: Though the numbers vary from year to year, the numbers below represent estimates for the 2016-17 flu…

A: The total number of persons is 360,000,000.

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Q: Find the area of the shaded region under the standard normal distribution to the left of the given…

A: The given shaded region is -2.12.

Q: 19. Which of the following is true about a 95% confidence interval of the mean of a given sample: a)…

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Q: Calculate the standard error for a sample mean when the population standard deviation is 250.1 and…

A: here given population standard deviation,σ=250.1 sample size , n=10,823   formula for standard…

Q: The Simple Linear Regression model is   Y = b0 + b1*X1 + u   and the Multiple Linear Regression…

A: Solution: According to the guidelines first question should be answered since the multiple questions…