A sales analyst wants to determine whether there is a difference in the mean monthly sales of a company's four sales regions. Several salespersons from each region are randomly selected and they provide their sales amount (in thousands of dollars) for the previous month. Using a 10% significance, can we conclude at least one region is different on average? Region Sales North North North North East East East East East South South South South West West West West West 17 31 26 23 20 26 28 16 20 16 9 21 36 22 27 27 22 32 What is the factor variable? Region What is the response variable? Sales Amount Test Statistic: P-Value:

Q: (a) Which variable is the explanatory variable? Square Footage O Selling Price (b) Draw a scatter…

A:

Q: own residents were interviewed and it was found that 422 responded favorably to a question while 501…

A: given data, 422-favorably responded501-negetively responded 923- total  interviewed for positive…

Q: QUESTION 7 Employees in a company experience distractions (phone calls, emails, unscheduled visits…

A: given data right skewed distributionμ = 95σ = 18n = 36P(x¯ >100) = ?here sample size n>3so, as…

Q: The probability function of a continuous random variable, X, is given by the equation: fx(x) =…

A:

Q: Trials in an experiment with a polygraph include 98 results that include 23 cases of wrong results…

A: From the provided information, Sample size (n) = 98 From which 75 cases of correct results. Sample…

Q: For the accompanying data set, (a) draw a scatter diagram of the data, (b) by hand, compute the…

A: Solution:  x y (x-x) (y-y) (x-x)(y-y) (x-x)2 (y-y)2 2 4 -3 -7.2 21.6 9 51.84 4 8 -1 -3.2 3.2…

Q: Problems 4-6: In 2015 about 60% of college students used Twitter. In a recent study of 100 students,…

A:

Q: A bag contains 4 red and 3 black balls. A second bag contains 2 red and 4 black balls One bag is…

A: bag 1: 4 red, 3 black : 7 total  bag 2  : 2 red, 4 black : 6 total event: B1: bag 1 selected B2: bag…

Q: What is the probability of getting a sum 9 from two throws of a dice?

A:

Q: Suppose Z follows the standard normal distribution. Calculate the following probabilities using the…

A:

Q: Mrs. Burke's physics class has 109 students, classified by academic year and major, as illustrated…

A: From the provided information, Academic year Physics major Non-physics major Total Freshman 15…

Q: 8) Run and show linear regressions (in Excel) for a) Body fat as the dependent variable and skinfold…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: QUESTION 6 A Hi-Tech company has introduced a new flash disk. Some dealers and customers have…

A: GIVEN DATA, p(defective)=0.0738 n=?ME=0.043CI=0.97α=1-0.97=0.03

Q: Fill in the P (X=x) values to give a legitimate probability distribution for the discrete random…

A: Given Fill in the P (X=x) values to give a legitimate probability distribution for the discrete…

Q: A scientist is testing 120 samples of Copper dug out from a mine randomly to access purity. In the…

A: Given n=120 P=0.65

Q: The data below shows car model and the color of vehicles sold at a Car dealership. Hyundai Honda…

A: Null and alternative hypotheses: Null hypothesis is a nullified statement about population parameter…

Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 445 green peas…

A:

Q: The mean percent of childhood asthma prevalence in 43 cities is 2.07%. A random sample of 32 of…

A:

Q: An engineer wants to determine how the weight of a gas-powered car, x, affects gas mileage, y. The…

A: From given data we have :

Q: A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the…

A: Given 2 red balls 3 green balls 2 blue balls

Q: An independent groups experiment tested a total of 18 participants. The obtained t value was 2.27.…

A: As per the Bartleby guildlines we have to solve first and rest can be reposted... Given that  Sample…

Q: A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the…

A: From the provided information, A bag contains 2 red, 3 green and 2 blue balls. Total balls = 2 + 3 +…

Q: Score: of 11 > Macmillan Learning 59.390 When there are few data, we often fall back on personal…

A:

Q: A survey of 18 adults in UAE found that the mean age for a person's primary vehicle is 3.9 years and…

A: given data sample size (n) = 18sample mean ( x¯ ) = 3.9sample standard deviatio (s) = 0.695% ci for…

Q: Here is a data set: 5890 5640 4960 4970 4810 5600 4970 5400 6140 5120 5850 5890 5120 6090 5170 5470…

A: Given that: 5890, 5640, 4960, 4970, 4810, 5600, 4970, 5400, 6140, 5120, 5850, 5890, 5120, 6090,…

Q: uppose that in a random selection of 100 colored candies, 26% of them are blue. The candy company…

A:

Q: Suppose the weights of Farmer Carl's potatoes are normally distributed with a mean of 8.2 ounces and…

A: Given that  The weights of Farmer Carl's potatoes are normally distributed with Mean (μ) = 8.2…

Q: en there are few data, we often fall back on personal probability. There had been just 24 space…

A: Given Number of days in a year = 365 Number of days in 300 years = 300 X 365 = 109500

Q: Group 1 (Ultima) 25 20 30 22 32 45 15 16 29 25 Group 2 (Placebo) 60 45 54 68 70 46 55 57 48 49…

A: According to the given information in this question We need to answer a and b

Q: State the hypotheses. Ho: Select an answer H₂: Select an answer Calculate the F test statistic.…

A: From the information, the claim of the test is that, the mean length of cuckoo birds eggs is not all…

Q: QUESTION 1 Find the z-score that marks the 5th percentile (denoted P5). That is, find the z-score…

A: given data  standard normal distribution  Z~N(0,1)  5th percentile = ?

Q: Determine the mean and standard deviation of the values 6, 5, 8, 5, 5, 6, 7, 8, 4, 6

A: Solution: Given information: n= 10 Observation.  The formulae for the sample mean is  x=∑xn

Q: Suppose Z follows the standard normal distribution. Use the calculator provided, or this table, to…

A: GIVEN DATA  P(c≤z≤1.08) = 0.8349c = ?

Q: Do these data provide sufficient evidence to warrant the conclusion that wheelchair use and falling…

A:

Q: Today, the waves are crashing onto the beach every 4.5 seconds. The times from when a person arrives…

A: Define the random variable, X : The times from when a person arrives at the shoreline until a…

Q: el (mmol/l) 1 5.12 2.30 2 6.18 2.54 3 6.77 2.95 4 6.65 3.77 5 6.36 4.18 6 5.90 5.31 7 5.48 5.53 8…

A: Given that,  X = Cholesterol Level (mmol/l) (Independent variable) Y =  Cholesterol Level (mmol/l)…

Q: X is a discrete variable with the probability distribution B(18, 0.35). Determine the value of…

A:

Q: Weights of Men’s Soccer Shoes. Is lighter better? A random sample of men’s soccer shoes from an…

A: Given data is10.8,9.8,8.8,9.6,9.9,10,8.4,9.6,10,9.4,9.8,9.4,9.8sample size(n)=13significance…

Q: The breaking strength of 80 “test pieces” of a certain alloy is given in the following table, the…

A: Given, The breaking strength of 80 “test pieces” of a certain alloy is given in the following table,…

Q: In a study of 816 randomly selected medical malpractice lawsuits, it was found that 520 of them were…

A: given data clim : p > 0.5n = 816x = 520α = 0.05

Q: Comprehensive Exam Many graduate programs require students to pass a comprehensive exam (or…

A: Introduction: Denote μ as the true mean number of questions asked on all comprehensive exams.

Q: Suppose that the mean score of a class of 34 students was 78. The 19 male students in the class had…

A: Basic formulas for mean has applied.

Q: The following table shows students’ test scores on the first two tests in an introductory statistics…

A: Regression equation is used to measure the predicted value. It explain the relationship between the…

Q: Suppose Z follows the standard normal distribution. Use the calculator provided, or this table, to…

A: given data  standard normal distribution  Z~N(0,1)

Q: A data set follows a normal distribution. The mean of the data set is 56 and the standard deviation…

A: From the provided information, Mean (µ) = 56 Standard deviation (σ) = 1.7 X~N (56, 1.7)

Q: How do I examine whether there is evidence that, in the population from which the respondents were…

A: Given information: The statement is given related to checking the significance of the mean. Find:…

Q: Consider the data. xi 1 2 3 4 5 yi 3 7 5 11 14     (D) Use the t test to test the following…

A:

Q: What is the probability of getting a sum 9 from two throws of a dice?

A: From the provided information, Two dice are thrown. Total outcomes = 6 × 6 = 36

Q: The pdf of a continuous random variable X is given by: [x(x) = { *xx +2x² 0≤x≤6 0 elsewhere…

A:

Q: Let the sample space be S = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10). Suppose the outcomes are equally…

A: given data sample space s : {1,2,3,4,5,6,7,8,9,10}equally likely outcomesE : even number less than 7…