Every year, the students at a school are given a musical aptitude test that rates them from 0 (no musical aptitude) to 5 (high musical aptitude). This year's results were: Aptitude Score 0 1 Frequency 23 5 5 1 The average (mean) aptitude score: The median aptitude score: 45 2 2 Erner an integer or decimal number more..

Q: Here is a bivariate data set. x y 44.5 37.1 33 19.5 40.1 33.9 26 122.3 32.3 44.5 38.6 21.8 44 -36.9…

A: x y 44.5 37.1 33 19.5 40.1 33.9 26 122.3 32.3 44.5 38.6 21.8 44 -36.9 42.5 -16.4…

Q: Find the mean for the given data set, 22,35,37,45 and 66

A: Answer: From the given data, 22,35,37,45 and 66 Sample size(n) = 5

Q: Suppose that the number of minutes it takes a person to walk to class, X, is uniformly distributed…

A: X~Uniform(0,8)

Q: 15. Make a decision. 16. Does this provide evidence that more than 70% of all Canadian children have…

A: Sample size n =625 Favorable cases x =425 Sample proportion p^=x/n  =425/625 =0.68

Q: Benson Manufacturing is considering ordering electronic components from three different suppliers.…

A: The chi-square test is used to measure the independence between the categorical variables. The…

Q: Two independent samples A and B of size 7 each have scores 55, 42, 46, 45, 38 49, 40 and B has 50,…

A: A :  N1=7  df1 = N- 1 = 7-1 = 6  { 55,42,46,45,38,49,40 }  M1 = (55+...40)/7 = 45 B:  N2=7  df2 = 6…

Q: Men in a certain area have an average weight of 162 pounds with a standard deviation of 34 pounds.…

A: Men in a certain area have an average weight of 162 pounds with a standard deviation of 34 pounds.

Q: How long it takes paint to dry can have an impact on the production capacity of a business. An auto…

A: ANOVA is a type of parametric test. It tests the mean significance between the three or more groups.…

Q: True or False? For a two-tailed test using z values at the 5% significance level we reject H0 if z ≤…

A: The hypothesis test is two tailed. significance level (α) = 5% = 0.05

Q: Construct both a 95% and a 90% confidence interval for B₁ for each of the following cases. a. B₁ =…

A: a) β^1=32, s=3, SSXX=35, n=12b) β^1=65, SSE=1960, SSXX=30, n=14c) β^1=-8.6, SSE=146, SSXX=49, n=20

Q: 13.84 9.74 11.34 13.57 10. 9.7 Construct an ANOVA table to assess the null- lations have the same…

A:

Q: Consider the value of t such that 0.025 of the area under the curve is to the left of t. Step 2 of…

A: Degree of freedom =df =10

Q: n each of the following cases, find the best predicted value for y given that x = 3.00. The given…

A: The correlation coefficient, r= 0.058   Sample size, n=20 The least square regression line is : y^=…

Q: sing the 68-95-99.7 rule, which of the following is correct?

A: The random variable X = weight of a randomly selected bag of chips can be modeled by a normal…

Q: In Exercises 110-140, use the population of {2, 3, 5, 9} of the lengths of hospital stay (days) of…

A: The population is given as: 2, 3, 5, 9. Thus the population size, N=4 A sample size 2 (i.e., n=2) is…

Q: The average price of a college math textbook is $165 and the standard deviation is $25. Suppose that…

A: Mean(μ)=165 standard deviation(σ)=25 sample size(n)=10

Q: The number of successes and the sample size are given for a simple random sample from a population.…

A: Answer: From the given data, Sample size (n) = 132 x = 87 Sample proportion (p^) = xn= 87132= 0.659

Q: A clinical trial was conducted to test the effectiveness of a drug used for treating in older…

A: Suppose µ is the mean wake time for a population with drug treatment.

Q: For a confidence level of 92%, find the critical Value Quition Help: Video Submit Question

A: 0.92 confidence level

Q: Estimate the proportion of all students at this university who are First Year students. Use a 95%…

A: A parameter of interest is a statistical value of the population which is being tested based on the…

Q: Determine the point estimate of the population proportion, the margin of error for the following…

A: The given lower bound is 0.320 and upper bound is 0.590 and the sample size n is 1200.

Q: The average measured verbal IQ (IQV) scores of children is 100.  In a sample of 20 children, the…

A: Population mean (µ) = 100Standard deviations (σ) = 18.5Sample size (n) = 20Sample mean (x̅) =…

Q: Find the critical t value that corresponds to 95% confidence, Assume 29 degrees of freedom (two…

A: Answer: From the given data, 95% confidence interval, Degrees of freedom (df) = 29

Q: Consider the following hypothesis test. H0: ?1 − ?2 ≤ 0 Ha: ?1 − ?2 > 0 The following results are…

A: The given hypothesis is, Null hypothesis: H0:μ1-μ2≤0 Alternative hypothesis: Ha:μ1-μ2>0

Q: In a survey, 22 people were asked how much they spent on their child's last birthday gift. The…

A: The sample size n=22 The sample mean x¯=50 The sample standard deviation s=2 The confidence level is…

Q: The lower bound of the confidence interval is calculated using the expression x-a/2 √n -. Find this…

A: X=253.45σ=75.50n=64

Q: f) Table of data: 1 2 3 4 5 6 7 8 Data 12 13 18 22 23 25 30 32 g) Graph of data: Title: Distribution…

A: The question is about graphical representation of the data Given :   To find : Graph for the given…

Q: You may need to use the appropriate technology to answer this question. Consider the following…

A: H0: μ1 − μ2 = 0 Ha: μ1 − μ2 ≠ 0 sample 1 n1=35 x1=13.6 s1=5.6 sample 2 n2=40 x2=10.1 s2=8.1

Q: A somewhat outdated study indicates that the mean number of hours worked per week by software…

A: It is suspected that mean number of hours worked per week by software developers is not less than…

Q: Suppose that a category of world class runners are known to run a marathon (26 miles) in an average…

A: From the provided information, Mean (µ) = 145 Standard deviation (σ) = 11 X~N (145, 11) Sample size…

Q: The creator of the t-test, Gosset (who worked under the pseudonym Student) studied the effects of…

A: Sample size, n=10 Sample mean, x¯=2.33 Sample sd, s=2

Q: the three values of the variable that divide a data set ordered into four equal parts we can say…

A: Quartiles: The quartiles divide the entire data set into four equal parts, each containing 25% of…

Q: You are given the sample mean and the population standard deviation. Use this information to…

A: random sample of 45 business​ days, the mean closing price of a certain stock was​$111.24.Assume the…

Q: Select the correct hypothesis. Ho p = 0.488 versus Ha: p 0.467. 0.467. : O Ho: p=0.467 versus Hap O…

A: Let p be the population proportion of girls in Aedirn. Given that, Population proprotion (p) = 48.8%…

Q: A sample of ten observations is taken from a normal distribution with unkown mean. the sample mean…

A: Answer: From the given data, Sample size(n) = Ten =10 Sample mean (X¯) = 6.84 Population standard…

Q: We want to conduct a hypothesis test of the claim that the population mean daily profit of a…

A: Here, mean is 506 and standard deviation is 75. And sample sizes are 75 and 17.

Q: You measure 35 backpacks' weights, and find they have a mean weight of 64 ounces. Assume the…

A: n = 35x¯ = 64σ = 499% ci for μ = ?

Q: If n=16, (x-bar)=45, and s-17, construct a confidence interval at a 99% confidence level. Assume the…

A: Given that data is Normally distributed.  n= 16x¯=45s=17C=99%=0.99α=1-C=1-0.99=0.01

Q: ….. a. Find the percentage of men meeting the height requirement. What does the result suggest about…

A: A survey found that women's heights are normally distributed with mean 63.7 in. and standard…

Q: In a previous poll, 39% of adults with children under the age of 18 reported that their family ate…

A: Population proportion(P)=0.39n=1145x=422Sample proportion(p^)=xnSample…

Q: Assume that when adults smartphones are randomly selected, 38% use them in meetings or classes. if…

A: Answer:- According to the given information,  Probability of success, p = 38% = 0.38  Sample size, n…

Q: 33. NCAA Basketball Tournament Each year, 64 college basketball teams compete in the NCAA…

A: The number of times an observation occurred to provide the frequency of observations.  Permutation :…

Q: The lengths of adult males' hands are normally distributed with mean 190 mm and standard deviation…

A: Mean =190, Standard deviation = 7.3, Sample size = 12 Note :-According to bartleby experts question…

Q: A manufacturer claims that the mean lifetime, μ, of its light bulbs is 51 months. The standard…

A: Population mean, μ=51 Population sd, σ=5 Sample size, n=31 Sample mean, x¯=49 α=0.05

Q: Because of the popularity of social media among college students, there is a great deal of interest…

A:

Q: The weights of full boxes of a certain kind of cereal are normally distributed with a standard…

A: Population standard deviation σ=0.27 Sample size n=15 Sample mean x¯=9

Q: Were the results found surprising? Why were they surprising?

A: Recruitment and Follow-up: The study recruited 1,027 people between July 2010 and August 2011. Of…

Q: Find the margin of error for the given values of c, o, and n. c= 0.95, o 677, n = 40 O $7 $77 $2891…

A: Answer: From the given data, Sample size(n) = 40 Standard deviation(σ) = 677 Significance level (α)…

Q: Three independent samples A, B and C with equal sample size of 10 each have scores 2, 3, 5, 6, 8, 6,…

A: That is, there is no evidence to conclude that there is a significant difference between the…

Q: 1. State the decision rule. (Round your answer to 2 decimal places.) Reject Ho if t 2. Compute the…

A: Let μd be the population mean the difference between the units produced on the day shift and the…