Consider the following scores of 10 takers in a 20-item special test in Stat 1A as follows: 15, 11, 6, 8, 10, 12, 5, 11, 17, 9   Find the 70th percentile and show the second quartile

Q: 1.A sample of eight adults was taken, and these adults were asked about the time they spend per…

A: Given,sample size (n)=8sample mean(x)=23.75standard deviation(s)=11.0421degrees of…

Q: 3- Car and Driver Magazine tested a random sample of 9 hybrid cars and found their MPG to be 42, 51,…

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Q: A toy company claims that their building blocks have a certain color distribution, shown below. Use…

A: The claim is building block has a certain color distribution. The hypothesis is, H0: The proportion…

Q: 3) At the last census, 20% of the people in a town were less than 16 years old, 20% were 16-30, 25%…

A: The following data is given: Age Observed frequency < 16 30 16 - 30  31 31 - 45 37 46…

Q: Consider an experiment with nine groups, with two values in each. For the ANOVA summary table shown…

A: Given that Number of groups c = 9 Total number of observations, n = 9 × 2 = 18

Q: A Michigan study concerning preference for outdoor activities used a questionnaire with a six-point…

A: Given: The provided data is: The sample number of adults that were asked about fishing as an outdoor…

Q: A corporation recruiting business graduates was particularly interested in hiring numerate…

A: Given Data: 42, 29, 21, 37, 40, 33, 38, 26, 39, 47

Q: 2. For the following sample of n = 7 scores, compute SS, variance, and standard deviation for the…

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Q: Suppose that researchers collected a simple random sample of 39 children who had been identified as…

A: As given,  researchers collected a simple random sample of 39 children who had been identified as…

Q: In a population of bats living in a certain region, 30 percent have a wingspan greater than 10…

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Q: Among drivers who have had a car crash in the last year, 300 were randomly selected and categorized…

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Q: Among drivers who have had a car crash in the last year, 270 were randomly selected and categorized…

A: Claim : The distribution of crashes conforms to the distribution of ages. Hypothesis : H0 : The…

Q: The following scores represent the performance on a troubleshooting test of small random samples of…

A: For the given data Perform Anova single factor

Q: The following data represents the semi-monthly salary of the faculty (in thousands) of four state…

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Q: The following table represents the number of absences on various days of the week at an elementary…

A: Given the table represents the number of absences on various days of the week at an elementary…

Q: Find the​ range, variance, and standard deviation for the given sample​ data, if possible. If the…

A: Phenotype​ codes of 1–4 is given. That is, the data set represents nominal data.

Q: Because of the stressful working environment, employees at Company X are prone to criminal…

A: Here we conduct chi squared test of independent.

Q: A researcher was interested in the relationship between a swimmer’s hand length and corresponding…

A: In the given study, there are two variables:  a swimmer’s hand length and the time taken to complete…

Q: A researcher was interested in the relationship between a swimmer’s hand length and corresponding…

A: Given information- Significance level, α = 5% Sample size, n = 20 We have to test that a longer hand…

Q: A grassroots group opposed to a proposed increase in the gas tax claimed that the increase would…

A: Given Information: Consider the given table and test the three mean commuting mileages are same at…

Q: Number of Number of Employees Companies 41-45 11 36-40 6 31-35 26-30 21-25 8 16-20

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Q: The following is a random sample of the annual salaries of high school counselors in the United…

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Q: Interpret the following 99% confidence interval for the mean score on a placement test for incoming…

A: Confidence interval:   A range of values such that the population parameter can expected to contain…

Q: Which of the following sets of terms accurately describe a set of scores on a 100 point written test…

A: Given that the set of scores on 100 point written test are not normally distributed and have a…

Q: Listed below are the heights (inches) for the simple random sample of supermodels Lima, Bundchen,…

A: Given,sample size(n)=10sample mean(x¯)=69.825standard deviation(s)=0.7997α=0.01

Q: Construct a 90% confidence interval for the mean highway mileage for hybrid cars. A random sample of…

A: Solution:The sample mean is obtained below:From the given information, number of observations is 8…

Q: Among drivers who have had a car crash in the last year, 150 were randomly selected and categorized…

A: A goodness of fit Chi Sq test will be conducted. Age Under 25 25-44 45-64 Over 64…

Q: . A group of 20 candidates were selected from the two departments with the following marks Dep1 34…

A: Given: For department 1: Dep1 34 45 45 56 60 25 80 59 67 12 n1 = 10 For…

Q: (a) A sample of 12 of bags of Calbie Chips were weighed (to the nearest gram), and listed here as…

A: Given data is appropriate for t-test for single mean . because the sample size is less than 30.

Q: . The fuel economy sticker on a new SUV's window sticker indicates the owner can expect 16 mpg in…

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Q: A political scientist believes that affiliation to a political party (either Democrat or Republican)…

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Q: It is of interest to determine if there is a significant difference in population mean IQ among…

A: For the given data what is the Alternative hypothesis Test statistic = ? Critical value = ? What is…

Q: Find the missing values in the following ANOVA TABLE for a study that consist of 5 treatments with…

A: For the given data Find  dfbetween=? MSbetween? SSWithin=? dfwithin=? MSwithin=? SStotal =? dftotal…

Q: In a certain sampling Inspection, the number of defectives found in 10 Samples of 100 each are as…

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Q: 3. The following data shows the results of 4 students in a 50-item multiple choice exam: 47, 36, 42,…

A: Formula :

Q: The following integers were obtained as the number of visits to AUG Moodle, per week, by 32 students…

A: Given: n = 32 Formula Used: Lower quartile Q1 = 14(n+1)thterm

Q: Listed below are the heights (inches) for the simple random sample of supermodels Lima, Bundchen,…

A: Given data is70,71,69.25,68.5,69,70,71,70,70,69.5sample size(n)=10α=0.01

Q: The alternative hypothesis for this test( in words) is?

A: Test is that whether supermodels are taller than the typical woman.

Q: Consider a sample with six observations of 24, 25, 12, 6, 23, and 12. Compute the z-score for each…

A: Step-by-step procedure to obtain the mean and standard deviation using Excel. In Excel sheet, enter…

Q: A local school has seven math teachers and seven English teachers. When comparing their mean…

A: Given that  Two groups  Maths and English  Sample for maths =7 Sample for English=7  Which test is…

Q: If you have samples of n1=19 and n2=24​, in performing the​ pooled-variance t​ test, how many…

A: Solution: Given information: n1= 19 Sample size of sample 1n2= 24  Sample size of sample 2

Q: A leading GIS company arranged a special summer training programme for students of a reputed…

A: The t test are used to measure the mean significant difference between the sample and population or…

Q: A college entrance exam company determined that a score of 25 on the mathematics portion of the exam…

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Q: The following table lists the age distribution for a sample of 100 persons arrested for drunk…

A: The random variable arrests follow chi square distribution. There are 5 types of age. So, k = 5. We…

Q: A random sample of 10 independent healthy people showed the following body temperatures (in degrees…

A: Solution-: Given data: 98.5, 98.2, 99.0, 96.3, 98.3, 98.7, 97.2, 99.1, 98.7, 97.2  We want to test…