In its Fuel Economy Guide for 2008 model vehicles, the Environmental Protection Agency gives data on 1152 vehicles. There are a number of outliers, mainly vehicles with very poor gas mileage. If we ignore the outliers, however, the combined city and highway gas mileage of the other 1120 or so vehicles approximately Normal with mean 18.7 miles per gallon (mpg) and standard deviation 4.3 mpg.  Question: The quintiles of any distribution are the values with cumulative proportions 0.20, 0.40, 0.60, and 0.80. What are the quintiles of the distribution of gas mileage

Q: 1. Studies have shown that gasoline use for compact cars sold in the United States is normally…

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Q: (7) The commuting distance(in miles) for 12 students is listed below. 11.5, 21.9, 12.7, 9.0, 19.2,…

A: 7)Given data is11.5, 21.9, 12.7, 9.0, 19.2, 18.5, 19.3, 1.9, 19.2, 0.8, 28.8, 17.7

Q: A) A bell-shaped distribution has a mean ?=1200 and standard deviation ?=340.  Find the proportion…

A: Theoretical distribution is a branch of a frequency distribution. The theoretical distribution…

Q: 2. Make a simple analysis of the measured data of the level of traffic noise (in dB) in Table 1:…

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Q: Cholesterol levels in mmol/L on 10 patients were as follows: 1.50  1.95   1.84   2.20   1.68   2.41…

A: Cholesterol levels in mmol/L on 10 patients were as follows: X: 1.50  1.95   1.84   2.20   1.68…

Q: The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 250.1…

A: Empirical rule :  According to empirical rule ,  68% of data falls within the first standard…

Q: Consider a sample with a mean of 500 and a standard deviation of 100. What are the z-scores for the…

A: The mean is 500 and the standard deviation is 100.

Q: According to the Pak Car Dealers, the mean price for used cars isRs. 900,000. A Firm reviewed a…

A: Given Data National mean=900000

Q: What is the standard deviation of the following sample data: 21, 36, 50, 38, 44, 18. Round to 2…

A: From the provided information, The data values are as follow: 21, 36, 50, 38, 44, 18

Q: In its Fuel Economy Guide for 2016 model vehicles, the Environmental Protection Agency gives data on…

A: The question is about normal dist. Given : Popl. mean gas mileage of the vehicles ( μ ) = 23 mpg…

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Q: INSTRUCTIONS: Answer any FOUR (4) questions. QUESTION 1 Table 1 provides sample data concerning the…

A: What is Mean?Mean is the most commonly used measure of central tendency. It actually represents the…

Q: The heights of 100 male students are normally distributed with a mean height of 165 centimeters and…

A: Given data: Sample size = 100 Population mean = 165 Population standard deviation = 5.9

Q: The number of workers in six outlets of a fast-food restaurant is 12, 10, 11, 15, 12, and 14.…

A: Given data is12,10,11,15,12,14sample size(n)=6

Q: A. Coefficient of Variation In a barangay health center in Metro Manila with no more than a hundred…

A:

Q: Convert the following to z-score: a. Raw score of 100; mean of 60; SD of 15 b. Raw score of 95; mean…

A: Z=x-µσ This is the formula for z-score. x= raw score µ= mean σ= standard deviation (SD)

Q: o decide if a specific type of distribution is a good fit for a set of data. According to the…

A: As per guidelines, we will only answer first three subparts of the question, please repost the other…

Q: A certain dataset has the following values: Mean = 40; Median = 30; Mode = 30 What is the shape of…

A: It is an important part of statistics . It is widely used .

Q: Suppose you are asked to toss a coin 16 times (9 Heads) and calculate the proportion of the tosses…

A: The following information is given,  We tossed a coin 16 times. The probability of head and tail is…

Q: For the following data set, complete the table and determine the mean, median, mode, and standard…

A: The mean is calculated using the formula x¯=∑fx∑f The median is calculated using the formula…

Q: 13.) In the following dataset: 2, 3, 3, 1, 4. What are the Mean and Standard Deviation (estimate of…

A: q-13 x x2 2 4 3 9 3 9 1 1 4 16 ∑x  = 13 ∑x2 = 39   sample size (n) = 5

Q: Given the mean of a normally distributed data set is 25, with  standard deviation of 5, what percent…

A: We will standardize the normal variable and then use standard Normal table to find the required.

Q: Women are recommended to consume 1720 calories per day. You suspect that the average calorie intake…

A: As we are authorized to answer only 3 subparts for each question and that you haven't specified…

Q: We wish to estimate the difference in mean GPAS at two different colleges. Consider the following…

A: Given Information: School A: x¯1=4.05 s1=0.03 n1=80 School B: x¯2=3.95 s2=0.04 n2=90 Confidence…

Q: In its Fuel Economy Guide for 2008 model vehicles, the Environmental Protection Agency gives data on…

A:

Q: What is the standard deviation of the following sample data: 27, 46, 45, 38, 23, 40. Round to 2…

A:

Q: Consider a sample data set with the summary statistics s= 78, Q₁ = 30, and Qu= 180. a. Calculate…

A: S=78,QL=30, Qu=180

Q: Given the following scores in a statistics test, 98, 45, 78, 88, 62, 55, 78, and 85 compute for the:…

A: Let X be the score.Given that the data for X is 98, 45, 78, 88, 62, 55, 78 and 85.

Q: 6.) The daily water usage per person in Davao City is normally distributed with a mean of 18 gallons…

A: 6.) The daily water usage per person in Davao City is normally distributed with a mean of 18 gallons…

Q: 1.What is the sample standard deviation of this data set? {2,7,9,15,15} GeoGebra Calculator 4.96…

A: 9

Q: To determine if their 14 oz filling machine is properly adjusted, Harvey Soft Drinks has decided to…

A: The provided information is as follows:The data set is given in the example.The sample size is .

Q: In its Fuel Economy Guide for 2019 model vehicles, the Environmental Protection Agency gives data on…

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Q: Given the two assemblages below, calculate which assemblage is more evenly distributed. Personal…

A: Calculate Standard deviation, Variance and Range for the Data set 1.   Use EXCEL Procedure for…

Q: mean length of 25 cm. Because of the variability in the manufacturing​ process, the lengths of the…

A: Population mean μ =25 Population standard deviation =0.08

Q: To determine the distribution of the height of female grade 6 students in a develop country, a…

A: Given data is56,64,66,60,61,52,67,68,57,53,53,57,53,69,50,68,67,63,65,52,64,61,58,60,50sample…