Three admission test preparation programs are being evaluated. Suppose the scores obtained by a sample of 20 people who used the programs provided the following data. Program A B C 510 450 600 400 510 620 490 400 570 520 440 490 490 470 590 640 380 630 550 580 Use the Kruskal-Wallis test to determine whether there is a significant difference among the three test preparation programs. Use a = 0.05. State the null and alternative hypotheses. = OH: Median H: Median Median Median Median Median OH: Median = Median = Median H₂: Median > Median < Median OH: Not all populations of test scores are identical. H: All populations of test scores are identical. All populations of test scores are identical. H: Not all populations of test scores are identical. OH: Median Median Median H₂: Median = Median = Median Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to three decimal places.) p-value =

Q: values from a simple linear regression model with intercept: yˆ = 7 + 4x. Assume that the total…

A: As the question contains multiple subparts according to the company guidelines First 3 sub parts are…

Q: (d) Let X = eºZ+μ (o > 0, μ € R). Compute the density of X and E[X]. (e) A chi-square random…

A: Given Z~Normal0,1

Q: 1. A researcher claims that women on a special diet will have an average weight of 110 pounds. A…

A:

Q: D. Graph the following regression lines. - y = 0.3x + 2.5

A:

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: Given datayou would be 90% confident that you estimate iswith in 2% of the population.

Q: You are a researcher who is interested in how watching television influences children's performance…

A: The question is about correlation and regression Given :

Q: software

A: The confidence interval I1,I2,...Im for parameters θ1,θ2...θm In the analysis of variance problem…

Q: Suppose X is normally distributed with mean 5. If P(X ≤ 6) = 0.6700 what is the approximate value of…

A:

Q: 1. A company manufactures LCD monitors, which have a lifespan that is approximately normally…

A: As per our guidelines we are suppose to answer only one question1)GivenMean(x)=180standard…

Q: Calculating the coefficient of determination of a set of data, it was obtained that r^2 = 0.845 .…

A: Here given that the coefficient of determination of a set of data, it was obtained that r2 = 0.845.…

Q: the low-risk category the next year.(1) Find the transition matrix, P. (2) If 90% of the drivers in…

A: here given  An insurance company classifies drivers as low-risk if they are accident free for one…

Q: Car inspection: Of all the registered automobiles in a city, 9%fail the emissions test. Eleven…

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

Q: The accompanying data were collected from a statistics class. The column heads give the variable,…

A: The data from a statistics class is given.

Q: A manufacturing process produces semiconductor chips with a known failure rate of 7.6% . If a…

A: Given data: P = 7.6 % Sample size  = 240 To find: The probability that at least 18  will be…

Q: The diameters of ball bearings are distributed normally the mean diameter is 104 mm and a standard…

A:

Q: The accompanying table gives the population (in hundred thousands) and number of people not covered…

A:

Q: A researcher wants to assess if there is a difference in the average life spans between men and…

A: Givenμ1=average life span of japanese womenμ2=average life span of japanese menFor…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: It is given that margin of error (E) is 0.045 and the confidence level is 0.90.

Q: 4. The specification of the melting point of an alloy is 1200 degrees Celsius. If the melting point…

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

Q: d. For the 35 people, find the probability that the average age that they learned to walk is between…

A: here given ,  Suppose the age that children learn to walk is normally distributed with mean 11…

Q: Suppose the diameter of holes for a cable harness is known to have a mean of 1.4 inches. A random…

A: The provided information is  x¯=1.6525s=0.16n=12α=0.05a.The null and alternative hypothesis…

Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

A: Here, µ= 1.8 , σ= 1.05.

Q: Direction: Calculate Spearman's coefficient of rank correlation for the following. Describe the…

A: The question is about correlation Given : 1 )   2 )

Q: Use the model found above to answer this question. In what year will the estimated revenue of Amazon…

A: Regression analysis  Note that I used R software for my calculations.

Q: The FBI wants to determine the effectiveness of their 10 most wanted list. To do so, they need to…

A: The following information has been given: The sample size is n=531. The number of people captured is…

Q: The amount of syrup that people put on their pancakes is normally distributed with mean 56 mL and…

A: The question is about sampling distribution Given : Popl. mean amount syrup on pancake ( μ ) = 56 mL…

Q: 5. What conclusions can you draw from the data gathered from one small bag compared to several small…

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

Q: A student is planning for his final year project sample size for determining the electricity…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: 1. a. Two fair dice are rolled at once. Let X denote the difference in the number of dots that…

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

Q: Suppose that you wanted to estimate the population mean amount spent eating out per week by…

A: The question is about sample size estimation Given : Sample std. deviation = 200 dollars Margin of…

Q: Complete parts (a) through (c) below. (a) Determine the critical value(s) for a right-tailed test of…

A: a. α=0.10 df=20   for right-tailed testtcrit=+1.325(from statistical table)b.α=0.01n=10The degrees…

Q: 3. Classify the following examples of data as either true or false: b. Current grade point average…

A: The discrete data essentially includes the quantitative values, which are assumed to be countable…

Q: A data set on Shark Attacks Worldwide posted on StatCrunch records data on all shark attacks in…

A: The given data indicates all the shark attacks in history. A surfer wants to learn if surfing during…

Q: We want to estimate the proportion of defective parts produced by a machine and the estimation will…

A:

Q: A simple random sample of size n is drawn from a population that is known to be normally…

A: From the provided information, Sample size (n) = 20 Sample variance (s2) = 12.2 Confidence level =…

Q: Find the percentage of cable television subscribers for each of the given years.

A: HERE GIVEN ,  from year 2013 to 2017 , no of subscriber and number of Household with TVs  percentage…

Q: 1. A company wanted to compare the performance of its call center employees in two different centers…

A: From the provided information

Q: Given the population 1,2,3,4,5 and a sample size of three, create a frequency and probability…

A: Given population is 1,2,3,4,5 N=No. of samples in population=5 Select a sample of size=n=3

Q: For item 1 to 3. Table 1.3 The following figures, released by the Federal Trade Commission, show the…

A: Given data is mg. of tar and nicotine content in 10 brands n=No. of observation=10 Let X: Tar…

Q: NE-SAMPLE WILCOXON SIGNED RANK TEST A food inspector examines 16 jars of certain brand of jam to…

A: Given: A food inspector examines 16 jars of certain brand of jam to determine the % of foreign…

Q: Approximate the sample standard deviation for the following frequency distribution. Data Frequency…

A: Data given Data  frequency 40-43 1 44-47 6 48-51 7 52-55 12 56-59 12

Q: ad, or the amount of HIV copies per milliliter of blood, is the most important outcome. Is there…

A: standard therapy new therapy 7400 400 7900 1500 1900 250 450 900 900 9000 2150 7300…

Q: Alcohol probabilities. Data collected by the Substance Abuse and Mental Health Services…

A:

Q: Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. Ho:…

A:

Q: 1. a. Two fair dice are rolled at once. Let X denote the difference in the number of dots that…

A: A discrete random variable is a variable whose values can be obtained by counting. Though, the…

Q: c) What is the meaning of the standard deviation in relation to the data? (A 1) d) Describe how the…

A: The given data indicates the heights of students. Mean is the average of the data. It is the sum of…

Q: Answer the following Questions (Show your solution) 1. For the standard normal distribution, what is…

A: Let Z be the random variable from standard normal distribution with mean = 0 and standard deviation…

Q: Are blonde female college students less likely to have boyfriends than brunette female college…

A: Given data: Significance level = 0.01

Q: Approximate the sample mean for the following frequency distribution. Data Frequency 35-38 1 39-42 3…

A: Data Frequency (f)  mid-values (x)  f.x 35-38 1 36.5 36.5 39-42 3 40.5 121.5 43-46 4 44.5…

Q: A sample of n = 49 scores is selected from a normal population with a mean of µ = 60 and a standard…

A: The mean is 60 and the standard deviation is 12.