QUESTION 52 "A significant ANOVA determined there was a difference in GPA based on birth oder. Using a Tukey's HSD = 0.5 which of group comparison(s) is driving the significant ANOVA if: First-borns' high school GPA (M = 3.81), second-borns (M = 3.33) or last-borns (M = 3.01)?" O First-borns' compared to second-borns' GPA O Second-borns' compared to the third-born's GPA O Third-borns' compared to the first-borns' GPA O "The ANOVA was incorrect, there are no differences. "
Q: A brokerage survey reports that 33% of all individual investors have used a discount broker (one…
A: Given that p = 33% = 0.33 , q = 1 - p = 1 - 0.33 = 0.67 n = 135
Q: (a) State the null hypothesis Ho and the alternative hypothesis H₁. Ho :O (b) Determine the type of…
A: Given that n1 = 458 , X1 = 206 , n2 = 429 , X2 = 179 Note : According to bartleby experts question…
Q: Find the z=score for observation x=18.54, given the following population: (Hint: Find Mean, Standard…
A: From the provided information, Mass Frequency 6-11 4 12-17 6 18-23 5…
Q: Using the latest in medical technology, an orthopedic doctor has developed a new surgical procedure…
A: There are two independent samples which are new procedure and standard procedure. We have to test…
Q: Suppose that the heights of adult men in the United States are normally distributed with a mean of…
A: GivenMean(μ)=69.5 inchesstandard deviation(σ)=3.5 inches
Q: A lottery ticket has a grand prize of 42.1 million. The probability of winning the grand prize is…
A:
Q: Johnson Wholesale Company manufactures a variety of products. The prices and quantities produced for…
A: From the given information 2010 is the base period and 2019 is the current period. Let P0 be the…
Q: Find the mean, median, and mode. Round answers to 2 decimal places B) Are the mean and median about…
A: Given that The data are X 36 , 49 , 24 , 66 , 25 , 12 , 55 , 12 , 50 , 4 , 14 , 43 , 42 , 102 , 33…
Q: Question 26 letter d-i
A: d) The objective is to find coefficient of determination r2: From part (a), the correlation…
Q: True or false? Using a sample of 250 individuals, a research firm carries out a study on preferences…
A: Descriptive Statistics: In a summary that explains the set of data and its characteristics,…
Q: We wish to estimate what percent of adult residents in Ventura County like chocolate. Out of 400…
A: Suppose, p is the true population proportion of the adult residents who like chocolate.
Q: Find the mean, median, and mode for the following data set. Round your answers to one decimal place,…
A: Given data: 11, 24, 24, -13, 14
Q: A simple random sample of 8 employees of a corporation provided the following information. Employee…
A: A simple random sample of 8 employees of a corporation provided the given Information. The objective…
Q: A professor who teaches a large introductory statistics class (197 students) with eight discussion…
A: a) Null Hypothesis: H0: All 8 groups have same mean. Alternative Hypothesis: H1: At least one group…
Q: QUESTION 12 "In an analysis of variance, differences caused by treatment effects contribute to which…
A: We have to choose correct option for analysis of variance We have to tell Differences caused by…
Q: The following is a set of data for a population with N=10. 15 2 1 3 10 9 9 10 9 8 a. Compute the…
A: Given that N = 10 x x2 15 225 2 4 1 1 3 9 10 100 9 81 9 81 10 100 9 81 8 64…
Q: 9:4 (b). The numbers 3, 2, 5.8, 7.9 and 4.5, have frequencies x, (x + 2), (x + 3) and (x + 6)…
A: Concept: Arithmetic mean= sum of all (frequency*number)/sum of all frequency
Q: Find the mean, median, and mode for the following data set. Round your answers to one decimal place,…
A:
Q: Example 5: Find a 90% confidence interval for the mean difference in the mileage obtained for tires…
A: Given: 50 45 50 50 100 100 100 -10 75 -25 0 25 75 25 50 40 35
Q: 1. Can pX(n)=g(n) be the probability mass function of a discrete random variable X that takes values…
A: Given that the function is, gx=34n+1, n≤x<n+1, n=0,1,2,3,.... 1. pX(n)=g(n) Let us check g(n) is…
Q: 63% of all Americans are home owners. 37 Americans are randomly selected, find the probability that…
A: given data P(home owner) = p =0.63no. of trials = n = 37x = no. of home owners in sample
Q: ail ridership during the summer months in the North-East is believed to be closely related to the…
A: R square is the measure used to estimate the variation explained in the regression model. It is also…
Q: QUESTION 49 Which of the following Pearson correlations shows the greatest strength or consistency…
A: Given that Person correlation shows the greatest strength or consistency of relationships
Q: Draw a frequency polygon for the following: 2.5 7.5 3 5 Mid-Value of Class Interval: Frequency: 12.5…
A:
Q: The contingency table below summarizes a survey of 1,000 bottled beverage consumers. Lives in a…
A:
Q: The standard error is an estimator of the standard deviation of the estimator True False
A: The statement about standard error is given. Standard error(SE) is the SD(standard deviation) of the…
Q: A 1 total_cases_per_million 2 3 Mean 4 Standard Error 5 Median 6 Mode 7 Standard Deviation B C…
A: Given the two variables: Total cases per million and total deaths
Q: Example 5: Find a 90% confidence interval for the mean difference in the mileage obtained for tires…
A: Given: 50 45 50 50 100 100 100 -10 75 -25 0 25 75 25 50 40 35
Q: QUESTION 54 "A set of n = 59 pairs of X and Y scores has SSX = 25.41, SSY = 13.67, and SP = 24.43.…
A: It is given that SP = 24.43, SSX = 25.41 SSY = 13.67
Q: You are conducting a test of homogeneity for the claim that two different populations have the same…
A: Introduction: We need to calculate chi-square test-statistic for the chi-square test of homogeneity.
Q: Chauncey Billups, a current shooting guard for the Los Angeles Clippers, has a career free-throw…
A: GivenPercentage of carrer free throw (p)=0.894No.of throws(n)=6Let "x" be the no.of free throws that…
Q: A toy manufacturer wants to see how long, on average, a new toy captures children's attention. He…
A: Givensample size(n)=10Mean(x)=24standard deviation(s)=8Confidence level=90%
Q: What is the test statistic for this sample? test statistic = (Report answer accurate to 4 decimal…
A: Given: pre-test post-test 43 64.4 44.8 -23.8 48.1 34.4 52.8 9.4 60.8 24.8 37.8 106.5…
Q: What are their accuracies and precisions? Why don't my SigFigs match?
A: We have three dispensers each having a volume of 296 ml. The Actual volume is 296 ml.
Q: This can be computed by adding and subtracting a margin of error to the point estimate.
A: The margin of error is obtained by multiplying the critical value and standard error value.
Q: A/ For the r.v. X is given f(x) = ()*; x = 1,2,3,... a- Find the moment generating function. a- Find…
A:
Q: Find the mean, median, and mode for the following data set. Round your answers to one decimal place,…
A: Given 11,24,24,-13,14
Q: Which of the following correctly describes the nature of discrete quantitative variables? a. They…
A: The objective is to identify the statement that correctly describes the nature of discrete…
Q: Lifetimes of AAA batteries are approximately normally distributed. A manufacturer wants to estimate…
A: Given: Sample size n=25 Sample mean = 9.9 hour Sample standard deviations s=1.9 To find 99%…
Q: Verify that the following function is a cumulative distribution function. 0 F(x)=0.5 Round your…
A: The question is about cumulative dist. function Given : F ( x ) = { 0 for x < 1…
Q: On Friday night, the owner of Chez Pierre in downtown Chicago noted the amount spent for dinner for…
A: Given that The data are X 95 ,103 ,109 , 170 ,114 ,113 ,107 ,124 ,105 ,80 , 104 ,84 ,176 ,115 ,69…
Q: The following three independent random samples are obtained from three normally distributed…
A: Given data: Group1: Internship Group2: Co-op Group3: Work study 11.5 9.25 17.5 10.75 14.5…
Q: Suppose that a particular candidate for public office is in fact favored by 47% of all registered…
A: Given that p = 47% = 0.47 , q = 1 - p = 1 - 0.47 = 0.53 , n = 300 Find P( p^ > 0.5 )
Q: You wish to test the following claim (HaHa) at a significance level of α=0.001α=0.001.…
A: Given Information: The objective is to test the claim (Ha) at a significance level of α=0.001…
Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…
A:
Q: Let X be a random variable with the following probability distribution. Value x of XP (X=x) -1 0 1 2…
A: Given data is value of x of X P(X=x) -1 0.05 0 0.25 1 0.55 2 0.15
Q: QUESTION 26 A repeated measures ANOVA using 8 participants observed a df-within = 21 and SS-Error =…
A: We have given that df-within = 21 SS-Error = 49.47 SS-Error = 2.36 (Ans.)
Q: A population consists of value 3. 5. 7 and 9. Take all possible simple random samples of size 2…
A:
Q: The accompanying frequency distribution summarizes sample data consisting of ages of randomly…
A:
Q: roblem #4
A: Given data: X Y 3 1 4 2 6 3 2 4 10 10
Step by step
Solved in 2 steps
- Question 15 - ANOVA 1 National bearings manufactures bearings at plants located in Portland Oregon, Houston Texas and Jacksonville, Florida. To measure employee knowledge of Total Quality Management (TQM), six employees were randomly selected at each plant and tested. The test scores of these employees are given in the attached data. Managers want to know if, on averge, knowledge of TQM is equal across the 3 plants. Test equality of mean scores at x=0.05.question 26 a repeated measures ANOVA using 11 participants observed a df within = 30 and ss-error= 28.05. what will be the value of ms error given this information?Question 02 There is a claim that drink driving has been very common in high ways. The Highway Police randomly caught 300 drivers for breath alcohol test and found that 14% of drivers have breath alcohol over the legal limit. At 4% level of significance, use the p-value approach to test the hypothesis that the percentage of drivers who are drink driving is more than 10%.
- QUESTION 7 A number of 28 university students who smokes completed a questionnaire inquiring their smokinghistory and behavior. The result shows that the average smoking initiation age of this group is 21.6years with a variance of 18.49. Based on past record, the smoking initiation age of universitystudent has a mean of 20.74 years with a standard deviation of 5.1 years. Conduct a necessaryanalysis to determine if the smoking initiation age remain the same as the previous record. Use 4%level of significance.Question 21 Only 11% of registered voters voted in the last election. Will voter participation change for the upcoming election? Of the 380 randomly selected registered voters surveyed, 61 of them will vote in the upcoming election. What can be concluded at the αα = 0.01 level of significance? A.)For this study, we should use Select an answer z-test for a population proportion t-test for a population mean B.)The null and alternative hypotheses would be: -H0:H0: ? p μ Select an answer < > ≠ = (please enter a decimal) -H1:H1: ? μ p Select an answer = ≠ < > (Please enter a decimal) c. )The test statistic ? z t = (please show your answer to 3 decimal places.)Table 4.20 appeared in a national study of 15- and 16-year-old adolescents. The event of interest is ever having sexual intercourse. Analyze these data and summarize in a one-page report, including description and inference about the effects of both gender and race. Note: No need for a whole page, just need to include related information.
- Question 6.136 Based off of the p-value, do you reject or accept the null at a 1% level? Part B from the problem, is it fair to assume that this sample is representative of all footballs used by the Patriots during the 2014 season. Is the test good or bad.QUESTION 18 A manufacturer of car batteries claims that his product will last at least 4 years on average. A sample of 50 is taken and the mean and standard deviation are found. The test statistic is calculated to be -1.656. Using a 5% significance level, the conclusion would be: there is sufficient evidence for the manufacturer’s claim to be considered correct there is insufficient evidence for the manufacturer’s claim to be considered correct there is insufficient evidence for the manufacturer’s claim to be considered incorrect there is sufficient evidence for the manufacturer’s claim to be considered incorrectQuestion 1 Based on a national survey of adults in U.S, 60 percent of adult believe a phone-in poll of 300,000 people rather than a random sample of 1000 people. Which would you be more likely to believe and why? Question 2 A clinical trial was conducted in which 29 participants were given a pig whipworm egg treatment every 3 weeks for 6 months. At the end of the study, they found 79.3 percent of the subjects in the study experienced a reduction in Chrohn’s disease symptoms. What is the concern with the experimental design of this study? Question 3 You are interested in determining the average age of students at the University. Come up with two questions (and the possible answers they would select, if applicable) in which: 1-Age would be classified as a categorical variable. 2-Age would be classified as a numerical variable Question 4 Knowing the value of determining the sample size prior to the start of a study, you use appropriate sample size formula and calculate the required sample…
- Question 1 A sample of 14 cans of coffee has an average weight of 16 ounces and a variance of 4 ounces2. Assume that the weight of cans is normally distributed. Keep 4 digits after the period for all questions (e.g., 2.4505). a) Determine the margin of error for an 80% confidence level for the population averageweight. Show your work. b) Construct the 90% C.I. for the population average weight. Show your work.QUESTION 5 Two different hardening processes, namely saltwater quenching and oil quenching are used onsamples of a particular type of metal alloy. The hardness (in N/mn2) results are shown in Table 4.Assume that hardness is normally distributed. Calculate the 98% confidence interval for the ratioof two population variances for two different hardening processes saltwater quenching and oilquenching. Interpret the result. Table 4Saltwater Quenching Oil Quenching145 152150 150153 147148 155141 140152 146146 158154 152139 151148 143QUESTION 1 What are the degrees of freedom for a study that used a paired samples t-test and had 63 people in the study? QUESTION 2 A study used a within the design and had a degree of freedom of df= 49. How many participants were in the sample? QUESTION 3 Why do we not test for homogeneity with a paired samples t-test? we assume that the two samples we have chosen will have the same variance since the same sample is used in both conditions, we assume the data remains homogeneous the variance is too large that we cannot perform the test we assume there is no variability when using paired sample designs