An analyst tested a forecasting model and identified the following performance metrics. What do the results tell you about the errors in the forecasting model? Be as descriptive as possible, given the results.

Q: Use the data in the following table, which lists drive-thru order accuracy at popular fast food…

A: Solution:- from given information   A B C D Total Order Accurate 315 273 249 133 970 Order…

Q: The test statistic of z=2.55 is obtained when testing the claim that p#0.727. a. Identify the…

A: given data Z = 2.55claim : p ≠ 0.727

Q: In 2011, a U.S. Census report determined that 71% of college students work. A researcher thinks this…

A: Given that  Sample size n =110 Favorable cases x =91 Sample proportion p^=x/n  =91/110 =0.8273…

Q: The annual sales for a company follow the AR(2) model X, = 5+1.1X-1-0.5X-2+ with o = 2. (a) If sales…

A: Given the AR(2) model for the annual sales of a company as Xt=5+1.1Xt-1-0.5Xt-2+εt   with σε2=2

Q: In a certain lottery, an urn contains balls numbered 1 to 25. From this urn, 4 balls are chosen…

A: We have given that An urn contains balls numbered 1 to 27From the urn 4 balls are randomly…

Q: a. Write the least squares prediction equation for y = total number of runs scored by a team during…

A: Regression analysis Since you have posted a question with multiple subparts, we will provide…

Q: A hospital performs 6 complex surgeries of a certain type per week. It is known that 60% of patients…

A: Givenp=0.60sample size(n)=6Let "x" be the no.of patients will…

Q: Find the value of the combination. 4C3

A:

Q: It is believed that 75% of residents near a large steel industry are allergic to pollutants released…

A: a. Suppose a random variable X, defines that the number of residents near a large steel industry,…

Q: GIVEN: A researcher aims to know the impact of COVID-19 on the companies in Southwest America…

A: Multistage sampling, also known as multistage cluster sampling, involves taking a sample from a…

Q: The frequency distribution was obtained using a class width of 0.5 for data on cigarette tax rates.…

A: We have given that Mean(µ) = 1.738Standard deviations (σ) = 1.099 We have given the following table…

Q: Question 2 Integrating the standard normal curve from the left end to a z-score of z = 1.50 results…

A: Given that.   X~N( 0 , 1 )   μ=0  , ?=1 (for standard normal distribution)    Z-score =( x - μ )/?

Q: A salesperson obtained a systematic sample of size 20 from a list of 500 clients. To do so, he…

A:

Q: OHA: 22.3 b. What is the correct distribution to use for the test? Select an answer c. What is the…

A: Followings are the Explanation of the question Use the Two sample independent t test when standard…

Q: Systolic blood pressure levels above 120 mm Hg are considered to be high. For the 100 systolic blood…

A: given data,n=100x¯=121.88s=16.16536claim :μ>120α=0.10

Q: GIVEN: A researcher aims to know the impact of COVID-19 on the companies in Southwest America…

A: Given: A researcher aims to know the impact of COVID-19 on the companies in Southwest America…

Q: Suppose that the outstanding credit card balance of a randomly selected young man has an unknown…

A: Given,sample size(n)=33mean(μ)=600standard deviation(σ)=148.8

Q: You want to see if your gamma correlation of +.40 is statistically significant using a hypothesis…

A: Gamma test is tells the association between the ranked or ordinal variable. It is used for…

Q: There is a room with N bulbs turned on along the exponential distribution, which has a life…

A: Let Xi denotes the life of the ith bulb, i=1,2,...,N. Given that Xi follows an exponential…

Q: hown below are the annual new orders for 10 years according to the U.S. Census Bureau and the raw…

A: Solution: Let x =Raw steel production  y = New order  x y (x-x) (y-y) (x-x)(y-y) (x-x)2 99.9…

Q: A random sample has been taken from normal distribution and the following confidence intervals…

A: Confidence interval(CI)=(43.53  ,  55.87)Lower limit=43.53Upper limit=55.87and (41.59  , 57.81)Lower…

Q: You are given the following data representing a random sample of the amount of coffee a particular…

A: Followings are the Explanation of the question Calculate the Sample Mean and sample standard…

Q: Using statkey appropriately, we want to test whether the average FAT(grams) in serving of cereal is…

A: From the given information, Claim is test whether the average FAT(grams) in serving of cereal is at…

Q: LARUTALSPORTER H Consider a sample with a mean of 30 and a standard deviation of 5. Use Chebyshev's…

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

Q: Arthritis is a very commonly occurring affliction. It is a major cause of lost work time and often…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 4 sub-parts.  In case…

Q: data set includes data from student evaluations of courses. The summary statistics are n=86​,…

A: given data,n=86x=4.17s=0.66α=0.10claim:μ=4.25

Q: A correlation of -0.40 indicates a weaker linear relationship than a correlation of 0.38.

A: Correlation indicates the strength of the association.

Q: PROBABILITY SAMPLING Choose: Simple random sampling, Stratified random sampling, Cluster random…

A: We have to find which sampling techniques we use in the following:   a.. A teenager realized that…

Q: Which one of Cook and Campbell's (1979) four big validities best addresses whether a study used…

A: According to cook and Campbell's four big validities best addresses whether a study used appropriate…

Q: Given the linear correlation coefficient r and the sample size n, determine the critical values of r…

A: Given r=0.543 , n=25, level of significance ɑ=0.05

Q: Male Female Child Survived 337 416 1,482 118 1,819 534 Died Total 80 68 148 Total 833 1,668 2,501

A: As per our guidelines we are suppose to answer only three sub parts. Required probability is…

Q: You have a table showing the following data: Crime No Yes Total Intelligence High 10 10 Medium 150…

A: Solution-: What would be more appropriate for given table: Intelligence Crime Total No Yes…

Q: Laboratory records show that 4% of samples of a given material are lost to contamination. Answer…

A: Introduction: It is given that 4% or 0.04 samples of a given material are lost to contamination.

Q: The following data represent the time between eruptions and the length of eruption for 8 randomly…

A: The coefficient of determination is 87.6%.

Q: QUESTIONS: What is the target population? . All companies in Southwest America affected by COVID-19…

A: Sampling design

Q: Evaluate P4 and Co. (If necessary, consult a list of formulas.) P = 0 64 C = 0 60 X S

A: we have to evaluate term 6P4 and 6C0. nPr = n!(n-r)!nCr = n!r!(n-r)!

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

A: given data normal distributionμ = 100σ = 15shaded area = area to the right of 90

Q: The Kyoto Protocol was signed in 1997, and required countries to start reducing their carbon…

A: Given Information: In 2004, the mean CO2 emission was 4.87 metric tons per capita.  In 2010, the CO2…

Q: A researcher wishes to estimate, with 99% confidence, the population proportion of adults who…

A: given data, CI=0.99α=1-0.99=0.01E=4%=0.04Zc:=Zα/2=Z0.01/2=Z0.0050=2.576 [from excel function, code…

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

A: According to the given information, we have Z score = -1.21 The distribution is standard normal…

Q: The average student loan debt is reported to be $25,235. A student belives that the student loan…

A: Given,Sample size(n)=100sample mean(μ)=$27,524Standard deviation(s)=$6000and α=0.05

Q: A local high school has both male and female students. Each student either plays a sport or doesn't.…

A: sport no sport total male 12 8 20 female 20 10 30 total 32 18 50

Q: A counselor at a large high school evaluates the ACT scores of the seniors who took the exam. b. A…

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

Q: What is the shape of the distribution? Table 1. The height of 40 randomly selected student

A: Given information: Height No of students 150-154 2 155-159 4 160-164 8 165-169 12…

Q: Listed below are heights of a random sample of men and women. Men Women 186.5 166.8 176.0 177.5…

A: Given n1=10 n2=10 92% confidence interval

Q: An elementary school claims that the standard deviation in reading scores of its fourth grade…

A: given data,an elementary school claims that the standard deviation in reading scores of its fourth…

Q: A soft-drink machine is regulated so that it discharges an average of 200mL per cup. If the amount…

A: given data normal distributionμ = 200σ = 15FOR SMALLEST 25% X = ?

Q: A builder claims that heat pumps are installed in 70% of all homes being constructed today in a…

A: In statistical inference, there are two parts testing of hypothesis and estimation theory. In…

Q: Presidents and first ladies: The following table presents the ages of 9 U.S. presidents and their…

A: From given data  :

Q: Question 8 A study claims that student athletes spend at least 25 hrs/week in training. A recent…

A: Given that  Sample size n =20 Sample mean=23 Standard deviation =3