Using the table below creating a 3-year and 4-year moving average and predict sales for 2008. Find the mean absolute deviation (MAD) for both the 3 and 4 year moving averages.( MAD=Σ | Error | n

Q: 14. The supervisors of a rural county are interested in the proportion of property owners who…

A: Given:-               The supervisors of a rural country are interested in the proportion of…

Q: A sample of 51 COVID-19 patients had a mean incubation time of 6.7 days, and a standard deviation of…

A: given data sample size (n) = 51sample mean ( x¯ ) = 6.7sample standard deviatio (s) = 4.090% ci for…

Q: Data collected on school subject preferences are summarized below. . 18 males prefer science 30…

A: From the given information, n(Male and Science) = 18 n(Male and History) = 30 n(Male and English) =…

Q: The table shows the height and the shooting percentage for the 9 members of the 2019 NBA-champion…

A: Given: The table shows the height and the shooting percentage for the 9 members of the 2019…

Q: Use the following data to answer the questions posed below.  This is data taken from a simple random…

A: Hypothesis test is used to compare the sample and population. There are two types of hypothesis…

Q: Listed below are body temperatures (in °F) from seven different subjects measured at 8 AM and again…

A: From the given information we make the following table 8 AM (A) 12 AM  (B)  d = A - B 96.7 99.5…

Q: The table to the right shows selected ages of licensed drivers in one country and the corresponding…

A: age percentile 75 98 65 88 55 75 45 58 35 40 25 14 20 4

Q: Questions 27-30 are based on the following regression summary output You are assisting the county…

A: Hi! Thank you for the question, As per guidelines, we are allowed to answer three sub-parts at a…

Q: Use the confusion matrix, calculate the following measures. Actual \ Predict  (Predict) Cancer =…

A: The question is about confusion matrix Given :   To find : Value of accuracy

Q: Given r = 0.8, MX = 10, Sx = 2, MY = 6, and SY = 1, what is the regression equation? Next, when X is…

A: Given information: r = 0.8, MX = 10, Sx = 2, MY = 6, and SY = 1

Q: 40 50 60 BoxPlot C BoxPlot 70 80

A: Given that  Scores on an accounting exam ranged from 41 to 95, with quartiles Q1 = 50.25, Q2 = 58.5,…

Q: Use the accompanying table of z-scores and percentiles to find the percentage of data items in a…

A: We have given that z = -1.8 Here we will use the z-score and percentile table for the finding the…

Q: Also find the values of LCL and UCL for an R​ chart, and find the values of LCL and UCL for an x…

A: The data is given on carbon dioxide concentrations for 5 decades. The decades are 1960s, 1970s,…

Q: In a certain region, the mean annual salary for electricians is $58,650. Let x be a random variable…

A: According to the given information, we have Sample mean = 58650 Sample size = 50 Standard deviation…

Q: THE FOLLOWING FIGURE IS USED TO ANSWER THE FOLLOWING QUESTION. The percentage of deaths due to…

A: Given: The percentage of deaths due to pneumonia , influenza, and COVID-19 is given in the figure.

Q: Varric has conducted a within subjects ANOVA to determine if his band of pirates have significantly…

A: Anova is the measure of mean significance between the three or more groups. It explain the variation…

Q: d According to centers for Disease Control and Prevention, 40.5% of the adult population in the…

A: Since you have posted multiple questions, we will provide the solution only to the first question as…

Q: 19 90 0.4 2 8 0 ecdf of Wine consumption 100 200 X 300 400 Frequency 0 Bar plot of Wine consumption…

A: Solution: The ecdf, bar plot and box plot of wine consumption are given.

Q: 6. If f(x,y) = 2 x>0; y>0; x+y<1 Show the conditional pdf of Y given x is uniform.

A:

Q: Let x represent the average annual salary of college and university professors (in thousands of…

A: using excel we find p value

Q: Brand A 42 30 39 28 29 Brand B 28 36 31 32 27 Brand C 24 36 28 28 33 Test Statistic: P-V alue: 95%…

A:

Q: Determine whether the given percentage is a statistic or a parameter and why.   In a study of all…

A: It is given that 'In a study of all 1018 students at Guttman, data showed that 10% live in Queens.'

Q: If the mean number of serious accidents per year in a large factory is 4, find the probability that…

A: Obtain the probability that in the current year there will exactly 4 accidents. The probability that…

Q: In regression equation, slope is the amount increases or decreases in the independent for every 1…

A: We have given that,  In regression equation, slope is the amount increases or decreases in the…

Q: Assume that a sample is used to estimate a population proportion p. Find the 98% confidence interval…

A:

Q: mode =  median =  mean =

A: Approximate the measures of center for following GFDT. Data Frequency 40 - 44 12 45 - 49 17…

Q: Listed below are body temperatures (in °F) from seven different subjects measured at 8 AM and again…

A: From the given information we make the following table 8 AM (A) 12 AM (B) d = A - B 96.2 99.3…

Q: An unknown metal has been found and the following experimental results have been tabulated in the…

A: When we want to predict the value of one variable, say y, from the given value of another variable,…

Q: Suppose you estimate an AR 2) regression model for Y_t using a time series of T=100 observations.…

A: The estimated regression equation is given as: Yt=0.5-0.2Yt-1+0.1Yt-2. For the period, t=100, it is…

Q: Samples of pages were randomly selected from three different novels. The Flesch Reading Ease scores…

A: The level of significance is 0.01.

Q: 15. Students in a large statistics class were randomly divided into two groups of 20 each. The first…

A: Given Information: Students in a large statistics class were randomly divided into two groups of 20…

Q: 5. Suppose X is a random variable. (a) X is independent of itself if and only if there is some…

A:

Q: Suppose Y1,Y2,··· ,Yn are i.i.d. continuous uniform(0,1) distributed. (a) Prove that the kth-order…

A: Given that the iid continuous random variables Y1, Y2, . . ., Yn follow Uniform0,1 distribution.

Q: Question 17: the scatter plots Have you identified any significant relationships? 7 6 5 4 3 2 1 0 0…

A: Scatterplots are substantially used to exhibit the relationship between the mentioned variables. It…

Q: of. Torres took her dog Manzy for a walk for 6 days.  These are the number of minutes of each of the…

A: x x2 5 25 25 625 60 3600 25 625 25 625 60 2500 sum =190 sum=8000

Q: A standard deck of cards contains 52 cards, with 13 cards of each suit. Three cards are dealt from a…

A: Given that  Total cards = 52 Number of hearts cards = 13 3 cards are drawn at random with…

Q: One study claimed that 91% of college students identify themselves as procrastinators. A professor…

A:

Q: WHAT IS H0 AND H1 MEANS?

A: H0 is null hypothesis and H1 is alternative hypothesis.

Q: find the P-value corresponding to the hypothesis that the average SAT score is less than 680.   A.…

A: It is given that  Population mean = 680 Sample mean = 667.4 Population standard deviation = 38…

Q: We have n observations on three variables, x, y, and z. If we regress y on x, the R-square is 0.5…

A: From the given information, There are 3 variables. If we regress y on x, the R-square is 0.5. Slope…

Q: Varric has conducted a within subjects ANOVA to determine if his band of pirates have significantly…

A: Given information: F(3, 58) = 5.22, p = 0.07 Decision Rule: If p-value ≤ α, then reject the null…

Q: According to College Board the scores on the AP History exam are normally distributed with N(72,…

A: It is given that the scores on the AP History exam are normally distributed with N(72, 7.5).

Q: y of 10 entries in a sales ledger has a mean value of £60 and a standard deviation of £8. What is…

A: given data, n=10x¯=60s=8CI=0.95df=n-1=10-1=9α=1-0.95=0.05

Q: what is the dependent variable that was considered in the analysis? do you think the dependent…

A: In the above question, the dependent variable is sales($).

Q: 3. You are given the sample mean and the population standard deviation. Use this information to…

A: It is given that  Sample mean = 123 Population standard deviation = 15.20 Sample size = 40

Q: In the equation y=b_0+b_1*x+e, which term represents the value of the dependent variable when the…

A:

Q: The average production cost for major movies is 57 million dollars and the standard deviation is 22…

A: given data, normal distribution,μ=57σ=22n=47

Q: agility decreases B. There is a statistically significant, strong, negative correlation between age…

A: It is given that  r(50) = -0.97 p &lt; 0.001

Q: The sample consisted of 75 night students, with a sample mean GPA of 3.13 and a standard deviation…

A: Solution-: Given: n1=75,x¯1=3.13,σ1=0.07,n2=75,x¯2=3.08,σ2=0.03,α=0.025 Here, we use z-test of two…

Q: if X=101, o=27, and n=32, construct a 95% confidence interval estimate of the population mean,

A: Given that  Sample size n =32 Sample mean=101. Population standard deviation =27