Similarly show that the F-statistic for the interaction is the square of the t-statistic for the contrast CAB (H11 – H12 - H21 + H22)/2 Explain why this contrast is the correct one to use in order to examine the presence of an interaction.
Q: During the current year, merchandise is sold for $109,200 cash and $588,900 on account. The cost of ...
A: given data sales through Cash = $109200 sales through Account = $ 588900 cost of merchandise sold = ...
Q: An article in the San Jose Mercury News stated that students in the California state university syst...
A: For the given data Perform one sample t test
Q: 3. Police plan to enforce speed limits during the morning rush hour on four different routes into th...
A:
Q: SITUATION 1 The following scores represent the final examination grades for an elementary statistics...
A: Given data is23,60,79,32,17,64,52,70,82,3680,77,81,95,41,65,92,85,55,7652,10,64,75,78,25,80,98,81,67...
Q: Find the requested probability. Round your answer to the nearest whole percent. 4) The length of tim...
A: Given : 4) Let X : Length of time it takes clg students to find a parking spot in the library parkin...
Q: Now consider the textbook expense of all IUPUI students. The mean and variance of textbook expense ...
A: Given,n=92x¯=$518.66σ2=15965.14α=1-0.95=0.05α2=0.025Z0.025=1.96 (from Z-table)
Q: 40. A population with a mean of u=9 has EX = 72. How many scores are in the population? (SHOW
A:
Q: If X and Y are independent RVs with f (x) = eU (x) and f,(y) = 3e U(y), -3y X find f.(z), if Z = Y
A:
Q: If the probability that a child is a boy is p, where 0 < p < 1, find the expected number of boys in ...
A:
Q: For the standard normal distribution shown on the right, find the probability of z occurring in the ...
A:
Q: a. What is the value of the correlation coefficient? Answer rounded to two decimal places b. Which o...
A: Given: X Y 76 85 54 61 81 88 97 95 41 60 73 67
Q: 3. Police trainees were seated in a darkened room facing a projector screen. Ten different license p...
A: For the given data Perform the T-test for paired samples
Q: Next, suppose that I am interested in the number of mutations at 10 locations for 100 patients. I s...
A: Given: The variable of interest is the number of mutations at one fixed location for 100 patients
Q: Data were collected to explain the satisfaction rating a caller gives a customer representative base...
A: Solution: Given information: n= 10 observation k=1 independent variable β1^= -1.30 Slope of the ...
Q: .A department store gives in-service training to its salesmen which is followed by a test. It is con...
A: Given: Test score Sales 14 31 19 36 24 48 21 37 26 50 22 45 15 33 20 41 19 3...
Q: A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it nee...
A: Given that Sample size=29 tires Sample mean=46700 Population standard deviation=8000 Level of sign...
Q: Design a simulation with 1000 replicates that illustrates the CLT for Normal Random Variables when n...
A: Question: Design a simulation with 1000 replicates that illustrates the CLT for Normal Random Variab...
Q: A. 0.0013 B. 0.3446 C. 0.4968 D. 0.8238 E. None of the above
A:
Q: 3. For the following distribution of quiz scores, if a score of X = 4 or lower is a failing grade, h...
A:
Q: Past records indicate that the probability of online retail orders that turn out to be fraudulent is...
A:
Q: How many caffeine drinks per day Count of how many caffeine drinks per day 3 61 2 54 4 38 1 ...
A:
Q: f A is an event in the finite sample space, then prove that P (A) equals the sum of the probabilitie...
A:
Q: What would be the fair price to pay for a chance to draw a ball from the box?
A: The organizing committee of a high school reunion placed 150 balls inside a box. Ten of the balls ar...
Q: A sample of 30 people showed that 25 expressed at some point in their life, they were ashamed of the...
A: Given that, A sample of 30 people showed that 25 expressed at some point in their life, they were as...
Q: how to calculate the variance?
A: Given The data is as follows: Overall mean = 4.07 Variance = 0.00130 SD = 0.1140
Q: Question: A, B and C are bidding for a contract. It is believed that A has exactly half the chance t...
A:
Q: A study was done to compare the amount of time per day students at public and private universities s...
A:
Q: The following is the UPC for RealLemon Lemon Juice. Find the missing digit. (Show your work) 0 ...
A:
Q: Suppose X has the B(20, 0.5) distrubution. Using normal approximation for X with the continuity corr...
A: Given that n = 20, P = 0.5 Using normal approximation for X with the continuity correction Find P(x ...
Q: If one of the pedestrian deaths is randomly selected, find the probability that the driver was not i...
A: HERE GIVEN TABLE FOR RESULTS FROM PEDESTRIAN DEATHS
Q: What is the probability they will declare the pump faulty?
A: Given: Mean, μ=12sd, σ=0.4sample size, n=81
Q: 5. In a sample of 500 children, 200 came from higher income group, and the rest from iower income gr...
A: The defined coefficient of association between the two variables, i.e., income group (which is defin...
Q: Consider the distribution below. Compute for the mean and variance. X 0 10 20 30 40 50 P(x) 5% 5% 25...
A: According to the given information, we have The probability distribution table is given. X 0 10 2...
Q: A bag contains 3 blue balls, 2 red balls, and 1 white. Two balls are drawn at random from the bag. I...
A:
Q: 18. A sample has a mean of M = 50. If one new person is added to this sample, what effect will this ...
A: The sample mean is M = Σx/n, where x is the value of observation and n is the number of observations...
Q: 55% of American households own a DVR. Suppose that 15 American households are randomly chosen. ...
A: Given that n = 15, P = 0.55, P(5 or 6) = ?
Q: hat sampling method should the researchers use if the study is about The Supply of Job Applications ...
A: Sampling Methods for conducting the survey Data are the basic material needed for effective statisti...
Q: 1. Compute for the weighted mean, provide the class intervals for the Likert scale, interpret your r...
A: A Likert scale is an ordinal scale of measurement used to collect the opinion and responses with the...
Q: e. 77 78 79 0.20 80 81 0.10 P(X) 0.15 0.15 0.40 Find the following probabilities: a. P(80) b. P(X>80...
A:
Q: 43. A number from 6 to 20 is drawn at random. What is the probability that you draw an odd number? (...
A:
Q: Consider the following model: yhat = -0.7+-2.1x2 The prediction of y is yhat. What is the estimated ...
A:
Q: .A department store gives in-service training to its salesmen which is followed by a test. It is con...
A:
Q: A. Find the derivative of each function. 1. f(x) = 26 2. g(x) = -9 3. f(x) = x+7 4. y = 4-2x 5. f(x)...
A:
Q: 3. The average movie admission price for 2019 was $9.26 with a population variance of 3.81. Here is ...
A:
Q: A cohort study was conducted over five years among 200 trial attorneys and general practice attorney...
A: To express the magnitude of association between the lawers exposed to heart disease and not exposed ...
Q: Newborn Weights (One-Week Sample) Baby No. Weight (pounds) 1 8.04 2 6.86 3 7.96 4 6.59 5 10.65 6 5.5...
A: The histogram is used to examine the distribution of quantitative variables via graphical representa...
Q: Data were collected to explain the amount of a customer’s purchase (expressed in $’s) based on the a...
A: (d) The objective is to find the standard error of the error term in the regression equation: Standa...
Q: sample of 240 doctors revealed that 108 are satisfied with the current state of US health care. The ...
A:
Q: Based on the information on 1000 randomly selected fields about the tenancy status of the cultivat...
A: Based on information on 1,000 randomly selected fields about the tenancy status of the cultivation o...
Q: A restaurant needs a staff of 3 waiters and 2 chefs to be properly staffed. The joint probability mo...
A: Note: Hi! Thank you for the question. As you have posted multiple sub-parts, according to our policy...
Step by step
Solved in 2 steps with 2 images
- I am having trouble interpreting what this statitical results are saying. "the summary of antimicrobial effects on bacterial reduction" The ANCOVA confirmed that the antimicrobial dose response was paralleled between the two bacterial species S. Typhimurium and E. faecium, and the interaction between antimicrobial concentrations and bacterial species was not significant (P > 0.05). Only antimicrobial concentrations of hydrogen peroxide and paracetic acid showed significant ( P < 0.05) reduction on S. Typhimurium and E. faecium on squash.What is the significance of R and R2 in gression model?The researchers reported:" A 2x2 ANOVA revealed, first of all, a main effect for depletion, indicating that depleted individuals generated less ideas (M = 9.40, SD = 5.64) than non-depleted individuals (M = 12.44, SD = 7.34), F (1, 108) = 6.03, p = .016, n2 = .05. This effect was qualified by the expected interaction with [perseverance], F (1,108) = 4.52, p = .036, n2 = .05". What size are the effects for the main effect of depletion and for the interaction between depletion and perseverance, according to Cohen's conventions? a. These are small- to -medium effects b. These are non existent effects c. These are large effects d. We are unable to tell from from the n2 / r2 statistics
- . A new chemotherapy drug is released to treat leukemia and researchers suspect that the drug may have fewer side effects than the most commonly used drug to treat leukemia. The two drugs have equivalent efficacy. In order to determine if a larger study should be conducted to look into the prevalence of side effects for the two drugs, set up a Mann-Whitney U test at the alpha equals .05 level and interpret its results. Number of Reported Side-EffectsOld Drug 0 1 1 3 5New Drug 0 0 1 2 4 Old Drug New Drug Total Sample(Ordered Smallest to Largest) RanksOld Drug New Drug Old Drug New DrugR1= R2= A) We reject H0 in favor of H1, which states the two populations are not equal at the alpha equals .05 level because the calculated U value of 10 is greater than the critical U value of 2.B) We reject H0 in favor of H1, which states the two populations are not equal at the alpha equals .05 level because the calculated U value of 8.5 is greater than the critical U value of 2.C) We fail to reject H0,…Which of the independent variables retains the strongest association with the number of children a respondent has when all other variables in the model are controlled? What is that association? Which has the weakest when other variables are controlled?why is the DV female drosophila Do you use a z or test for this problem?
- A cream with alpha-hydroxy acid, advertises that it can reduce wrinkles and improve the skin. In a study published in Archives of Dermatology (June 1996), 49 middle-aged women used a cream with alpha-hydroxy acid for 22 weeks. At the end of the study period, a dermatologist judged whether each woman exhibited any improvement in the condition of her skin. The results for the 49 women (where I = improved skin and N = no improvement) were: 32 I’s and 17 N’s. (a) Find a 95% confidence interval for p, the true population proportion of middle-aged women with improved skin after using this cream. Interpret the interval. (b) What assumptions are required for the confidence interval of part (a) to be statistically valid? (c) Are the assumptions for part (b) reasonably satisfied? Explain.For the horseshoe crab data with width, colors, and spine as predictors, suppose you start a backward elimination process with the most complex model possible Denoted by C ∗ S ∗ W, it uses main effects for each term as well as the three two-factor interactions and the three-factor interaction Conduct a likelihood-ratio test comparing this model to the simpler model that removes the three-factor interaction term but has all the two-factor interactions. Does this suggest that the three-factor term can be removed from the model? At the next stage, if we were to drop one term, explain why we would select model C ∗ S + C ∗ WIn recent years, concerns have been expressed about adverse health effects from amalgam dental restorations, which include mercury. The table below shows results from a study in which some patients were treated with amalgam restorations and others were treated with composite restorations that do not contain mercury (based on data from “Neuropsychological and Renal Effects of Dental Amalgam in Children,” by Bellinger, et al., Journal of the American Medical Association, Vol. 295, No. 15). Use a 0.05 significance level to test for independence between the type of restoration and sensory disorders. Do amalgam restorations appear to affect sensory disorders? Amalgam Composite Sensory disorder 36 28 No sensory disorder 231 239
- A new chemotherapy drug is released to treat leukemia and researchers suspect that the drug may have fewer side effects than the most commonly used drug to treat leukemia. The two drugs have equivalent efficacy. In order to determine if a larger study should be conducted to look into the prevalence of side effects for the two drugs, set up a Mann-Whitney U test at the alpha equals .05 level and interpret its results. Number of Reported Side-Effects Old Drug 0 1 3 3 5 New Drug 0 0 1 2 4 A) We fail to reject H0, which states the two populations are equal at the alpha equals .05 level because the calculated Uvalue of 16.5 is greater than the critical U value of 2. B) We fail to reject H0, which states the two populations are equal at the alpha equals .05 level because the calculated Uvalue of 8.5 is greater than the critical U value of 2. C) We reject H0 in favor of H1, which…. A new chemotherapy drug is released to treat leukemia and researchers suspect that the drug may have fewer side effects than the most commonly used drug to treat leukemia. The two drugs have equivalent efficacy. In order to determine if a larger study should be conducted to look into the prevalence of side effects for the two drugs, set up a Mann-Whitney U test at the alpha equals .05 level and interpret its results. Number of Reported Side-Effects Old Drug 0 1 3 3 5 New Drug 0 0 1 2 4 Old Drug New Drug Total Sample (Ordered Smallest to Largest) Ranks Old Drug New Drug Old Drug New Drug 0 0 0 0 2 2 1 0 1 0 4.5 2 3 1 3 1 7.5 4.5 3 2 3 2 7.5 6 5 4 5 4 10 9 Total R1=31.5 R2=23.5 A) We…A new chemotherapy drug is released to treat leukemia and researchers suspect that the drug may have fewer side effects than the most commonly used drug to treat leukemia. The two drugs have equivalent efficacy. In order to determine if a larger study should be conducted to look into the prevalence of side effects for the two drugs, set up a Mann-Whitney U test at the alpha equals .05 level and interpret its results. Number of Reported Side-Effects Old Drug 0 1 3 3 5 New Drug 0 0 1 2 4 Old Drug New Drug Total Sample (Ordered Smallest to Largest) Ranks Old Drug New Drug Old Drug New Drug A) We fail to reject H0, which…
