Explain what would happen if the smoothing constant in an exponential smoothing model was equal to zero. Explain what would happen if the smoothing constant was equal to one.

Q: In a test of a sex-selection technique, results consisted of 242 female babies and 15 male babies.…

A: Number of female babies =242 Number of male babies = 15 Total babies = 242+15…

Q: You watch people exiting Dodgers stadium after a game and you write down two things about each…

A: We know that,      * Chi square goodness of fit test is used to            determine whether a…

Q: Use the probability distribution to complete parts (a) through (d) below. The probability…

A: x 0 1 2 3 P(x) 0.03 0.17 0.28 0.52   x = no. of television an household have P(x=1 or 2) = ?

Q: Find the minimum sample size n needed to estimate µ for the given values of c, o, and E. c = 0.90, o…

A: We assume that a preliminary sample has atleast 30 members. Thus, we can apply the Central Limit…

Q: What conclusion can be drawn regarding the mean speed of cars traveling through the school zone?…

A: The sample size is 36, sample mean is 16.33 and the sample standard deviation is 2.54.

Q: 11: Suppose a researcher wished to do a study on the efficiency of 50 engineering Iraq. The…

A: engineering companies 49 57 38 73 81 74 59 76 65 69 54 56 69 68 78…

Q: According to the Empirical Rule, in a Normal Distribution of data you will have   percent of the…

A: According to the Empirical Rule, in a normal distribution of data, approximately: 68% of the data…

Q: On average, indoor cats live to 14 years old with a standard deviation of 2.2 years. Suppose that…

A:

Q: Imagine that the following four sentences are questions on a survey. Which question would produce…

A: We know that :-     Continuous data has an infinite number of           possible values that can be…

Q: the probability that a randomly selected day in April will be rainy or windy?

A: The probability of rain on any day in the month of April is 28%. The probability that will be windy…

Q: n a typical car, bell housings are bolted to crankcase castings by means of a series of 13 mm bolts.…

A: sample size(n) = 12 sample variance(s2)  = 0.0013construct 90 % ci for σ.

Q: 1000 customers' service times was recorded. Sixty of these are shown here. 3.6 1.2 1.4 1.4 0.2 0.3…

A: The steam and leaf plot is used to understand the shape of the distribution. It is also used to…

Q: Do our children spend enough time enjoying the outdoors and playing with friends, or are they…

A: A random sample of 250 youth between the ages of 8 and 18 showed that 160 of them had a TV in their…

Q: One of the reasons health care costs have been rising rapidly in recent years is the increasing cost…

A: The z-test is used to determine the mean significance between the sample and the population. It may…

Q: Samples from the posterior distribution of two parameters, μ and σ, were obtained using a…

A: The given numerical summaries are, node mean sd MC error 2.50% 5% median 95.00% 97.50% start…

Q: c Does the guest's claim of 3 Identifying Gender Discrimination After being rejected for employment,…

A: The given that, the proportion of women =0.50 Number of people hired = 20  X = number of women who…

Q: Researchers have found that neotropical rivers support a diverse array of endemic taxa, including…

A: Biogeographical analyses suggest that local mainstem electric fish diversity is enhanced by…

Q: Most vertebrate adult body sizes remain constant or increase throughout their lives.  Marine iguanas…

A: It is required to test the hypothesis that on average across time, iguana length changed (increased)…

Q: Let � be a random variable that represents the weights in pounds (lb) of adult males who are in…

A: Answer:- Given, X has a normal distribution with mean μ = 167 lbs and standard deviation σ = 6 lbs.…

Q: When performing a hypothesis test for the ratio of two population variances, the upper critical F…

A: Sample sizes: n1=4n2=8 Significance level: α=0.05

Q: Which distribution of ACT scores has the highest percentage of students scoring above 21.4?

A: Here given , Mean and standard deviation for different Subjects. X =  Score of student for…

Q: 5.1. Let X be the maximum and let y be the minimum of the number of heads obtained when Carlos and…

A: As per our guidelines, we are allowed to solved only 3 sub-parts. a) The sample space S can be…

Q: Explain what type of variables ‘Happiness Score’, ‘Log GDP per capita’ and ‘Social Support’ are,…

A: The objective is to define the variable type for the provided set of variables "Happiness score",…

Q: The data given below show the number of overtime hours worked in one week per employee. Use the data…

A: The question is about discrete prob. distribution Given :   To find : a ) Construct prob. dist. b )…

Q: Exercise 10.1. Let X be a real-valued r.v. and ex its characteristic function. Show that 3CER s.t.…

A: To prove the equivalence, we'll first assume that there exists a constant c∈ℝ such that P(X=c)=1.…

Q: Let x be a random variable that represents the hemoglobin count (HC) in human blood (measured in…

A: Sample size, n = 10 Sample mean, x¯ = 15.3 Population standard deviation, σ = 2.3

Q: Exercise 10.3. Let X and Y be two random variables with finite first moment on a probability space…

A: ANSWER: To show that the properties for conditional expectation are satisfied, we will use the…

Q: Let p be the population proportion for the following condition. Find the point estimates for p and…

A: The data is defined below as follows:   From the information, given that   Let p denotes the…

Q: You are given the following information about a stationary time-series model: |ts| = 0 t - s| = 1 =…

A: We are given the information about the time series model also that θ1 + θ2 = 0.7. We need to…

Q: Suppose that the true mean speed of cars in the school zone is actually 15 mph and the speeds we…

A: as the speed of cars in being measured in terms of the average, the parameter of interest is given…

Q: Question 1 Consider a 3 dimensional contingency table. Decide if the following statements are true…

A: A statement is given.

Q: ngs all by a single artist. Each line represents the percentages of each color for a s ng. ercentage…

A: The 12 paintings seem to fit neatly into 2 categories of 6 paintings each based on the distribution…

Q: The table shows the lifetimes in hours of samples from three different types of plant species…

A: Sample 1 Sample 2 Sample 3 457 454 460 461 456 458 459 458 456   455 458   452

Q: What are the hypotheses?

A: The objective is to set up the hypotheses in order to validate the claim that if the average amount…

Q: . The degrees of freedom for the t distribution are Select one: a. 20 b. 22 c. 21 d. 19

A: Given that,   Sample 1 Sample 2 Sample mean 45 42 Sample variance 85 90 Sample size 10 12…

Q: You asked each participant to indicate their sex (SEX [1=male, 2=female]) and age (AGE). You gave…

A: Given table is :-  Here Sex 1 indicates male . So,     Total number of male perticipants ,n…

Q: Suppose that John and Tom are sitting in a classroom containing 9 students in total. A teacher…

A: The total number of possible outcomes is given by the binomial coefficient "…

Q: Problem Set - Discrete Random Variable Table 1-Day Trader's Payouts and Probabilities. Pay Outs -150…

A: Pay outsProbability-0.1500.1900-1000.100000.25001000.20002500.15005000.10001.0000.0100

Q: Given that a data set has a mean of μ=125.7 and a standard deviation of σ=12.1, find the percent of…

A: Mean(μ)=125.7 standard deviation(σ)=12.1

Q: The weight of oranges growing in an orchard is normally distributed with a mean weight of 8 oz. and…

A: From the given information        Mean , μ=8 Standar deviation σ=1.5 We have to find how many orange…

Q: Listed below are body temperatures from five different subjects measured at 8 AM and again at 12 AM.…

A:

Q: Second principal component 3 2 1 0 1 2 3 3 1 0 First principal component (b) The variances of each…

A: From the given information, the variances of each of the principal components are Component…

Q: Classify the outlier in each scatterplot as high leverage or not and as influential or not. Explain…

A: An outlier is a data point  whose ordinate or abscissa has an extreme value which is far away from…

Q: Country A Country B Country C Country D Country E Trade Deficits (in billions of dollars) Country L…

A: Values in ascending order: 11.1, 13.2, 15.7, 16.2, 26.5, 26.7, 27.1, 29.1, 33.0, 33.0, 40.7, 43.7,…

Q: Extra Credit Assume that the nursing entrance examination (TEAS) scores are normally distributed…

A: The z score is the standard normal variate. It determines the number of observations deviated from…

Q: The Anova test can be used to compare 5 population means. False True 30

A: We have given the following statement The Anova test can be used to compare 5 population means

Q: Table 7 shows the seasonal factors for a monthly time series: Month Seasonal Factor January -358.1…

A: Given the seasonal factors for a monthly time series as Month Seasonal Factor January -358.1…

Q: The data given below show the number of overtime hours worked in one week per employee. Use the data…

A: Answer:- Given data is,  Overtime hours  0 1 2 3 4 5 6 Employees  5 11 28 54 44 27 15 Total…

Q: Select all of the statements that are axioms of probability. The probability of any event is between…

A: The axioms of probability are fundamental principles that define the behavior and properties of…

Q: Use the confidence level and sample data to find a confidence interval for estimating the population…

A: n = 100x¯ = 120s = 30construct 95% confidence interval for μ.