Compute for the Pearson Product Moment Correlation Coefficient of the following data set. Interpret the results.

Q: The lengths of pregnancies are normally distributed with a mean of 269 days and a standard deviation…

A: The mean is 269 days and the standard deviation is 15 days.

Q: A researcher uses a regression equation to predict home heating bills (dollar cost), based on home…

A:

Q: The manager of a computer retails store is concerned that his suppliers have been giving him laptop…

A: Given information- Population mean, µ = 3.8 years Population standard deviation, σ = 0.6 years…

Q: The following data lists the ages of a random selection of actresses when they won an award in the…

A: Given data: Actress Actor 28 59 31 41 30 38 29 35 36 28 28 33 27 48 40 35 33 39…

Q: The following data shows the number of packages packed by three workers in different work shifts.…

A: Given the data of the number of packages packed by three workers in different work shifts as…

Q: O O O O An increased number of colleges have been using online resources to research applicants.…

A:

Q: Samples of body temperatures were collected for a group of women and a group of men. The summary…

A: Given that, n1 = 15, sample mean for women = 98.38°F

Q: d. Present major regression summary outputs for both regression lines showing: regression…

A: GDP Inflation Unemployment 6.24 17.47 9.9 6.99 14.33 10.4 8.14 11.63 9.9 7.76 15.18 11.1…

Q: Do Rats Understand Hide-and-Seek? Exercise 2.24 introduces a study about teaching rats to play…

A: The question is about hypo. testing Given : Total no. times rats were hiding ( n1 ) = 53 No. of…

Q: Some people are concerned that new tougher standards and high stakes tests adopted in many states…

A: given data claim : p > 0.109n = 1782x = 210α = 0.05p^ = xn = 2101782 = 0.1178

Q: Listed below are the numbers of words spoken in a day by each member of eight different randomly…

A: Given::

Q: Suppose that we have a sample space with five equally likely experimental outcomes: {E1,E2, E3, E4,…

A: Solution-: Given: A sample space with five equally likely experimental outcomes: {E1,E2,E3,E4,E5}…

Q: The average gasoline price per gallon (y) in 10th of SR and the cost of a barrel of oil (x) in 10th…

A: Regression: In order to obtain the least square regression line, first perform regression analysis…

Q: Many members of a certain workforce died from cancer supposedly resulting from exposure to…

A: Note: We are supposed to solve only one question at a time. Please repost the other question…

Q: In a study performed on comfort food eating during times of stress, it was found that mean rated…

A: The question is about effect size Given : Sample mean rated comfort food cons. level for a grp. of…

Q: The sum of squares for 25 participants in a single sample is 144.  What is the approximate estimated…

A: Answer: From the given data, Sample size (n) = 25 Sum of squares (SS) = 144

Q: a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. n= (Round…

A: It is given that  Margin of error, E = 2.5% = 0.025 Confidence level = 90%

Q: If n=21, (x-bar)=46, and s=3, construct a confidence interval at a 90% confidence level. Assume the…

A: given data sample size (n) = 21sample mean ( x¯ ) = 46sample standard deviatio (s) = 390% ci for…

Q: What does the confidence interval suggest about the effectiveness of the​ treatment?   A. The…

A: Solution : We have given that Sample Size n = 48 Point estimate x̄ = 4.1 Sample…

Q: The test statistic of z= 2.66 is obtained when testing the claim that p *0.126. a. Identify the…

A: GIVEN DATA, test statistics of Z=2.66claim:p≠0.126we have to answers of parts a,b,c for the given…

Q: The City of Calgary reports that the number of vehicles that use the Crowchild Trail bridge various…

A: GivenMean(μ)=107500standard deviation(σ)=8800

Q: Listed below are the overhead widths​ (in cm) of seals measured from photographs and the weights​…

A: Given: n = 6 α = 0.01 Formula Used: r = n∑XY-∑X∑Yn∑X2-∑X2n∑Y2-∑Y2

Q: 1. If X and Y are random variables, find E[YE(XY=y)].

A:

Q: Let X be a random variable with pdf given by fX(x) = 1/[π(1 + x2)] for all real number x. Prove that…

A: Solution

Q: Give the best description of the correlation between V and I, assuming that a random voltage (V)…

A: Introduction: Denote the random voltage as V, the random current as I, and the constant resistive…

Q: About % of the area under the curve of the standard normal distribution is between z=−2.803z= and…

A: Explanation:Here taken the given between values and finded the z-score value Final answer is…

Q: Assume that the readings at freezing on a bundle of thermometers are normally distributed with a…

A:

Q: A hypothesis test procedure uses paired samples to compare the mean paired difference of a…

A: The difference is taken as before –after. The hypotheses to be tested are: Null hypothesis: H0: μ1-…

Q: The mean coffee consumption of a population of nurses is 9 cups of coffee per week.  A group of 10…

A: Given that, Population mean coffee consumption (μ)=9Sample size (n) = 10Sample mean (x)=13Standard…

Q: A diet guide claims that you will get 120 calories in a serving of vanilla yogurt. Consumer Reports…

A: From the provided information, Sample size (n) = 14 Level of significance (α) = 0.05

Q: The personnel director of a large hospital is interested in determining the relationship (if any)…

A:

Q: Refer to the accompanying data display that results from a sample of airport data speeds in Mbps.…

A: Given that : Confidence level =95% n=50 lower limit=13.046 Upper limit=17.598

Q: 2. A paint manufacturing company claims that the mean drying time for its paints is not longer than…

A: step.1  the null and alternative hypothesis ;- Claim to be tested is mean is no longer than 45 min.…

Q: The lifetime of a certain kind of electric bulb may be considered as a RV with mean 1200 hours and…

A: The life time have mean 1200 and standard deviation 250.

Q: 1000 randomly selected Americans were asked if they believed the minimum wage should be raised. 600…

A: Givensample size(n)=1000x=600sample proportion(p^)=xn=6001000=0.6confidence level=95%

Q: For dinner there are two choices of fish (salmon and haddock), three choices of rice (brown,…

A: given data  2 choices of fish 3 choices of rice 4 type of vegetables.    select one fish, one rice,…

Q: A particular fruit's weights are normally distributed, with a mean of 384 grams and a standard…

A: Let X be the fruit's weights follows normally distributed, with a mean of 384 grams and a standard…

Q: You estimated a regression with the following output. Source | SS df MS Number of obs = 157…

A: Given information: Source SS df MS   Number of obs =  157 Model 1065382460 1 1065382460…

Q: √(-) = 1 + 1 - 1+ y The conditional p.d.f of X and Y=y is given by f find P[X <1/Y=2].…

A:

Q: If n=27, ¯x(x-bar)=36, and s=20, construct a confidence interval at a 90% confidence level. Assume…

A: According to given question,  We have :-  Sample size n= 27 Sample standard deviation s  =20 Sample…

Q: Test whether there is a difference between two groups in the proportion who voted, if 45 out of a…

A: Assume that p1, p2 are the population proportions of who voted, in Group 1 and Group 2,…

Q: Can you please answer part d also?

A: From solution : Expected Loss=0.0075×50×106 =375000

Q: 3 Using a set of data collected over a period of one year, a researcher assessed the linear…

A: Given: The correlation coefficient r = -0.78 p-value = 0.08 α = 0.05

Q: For an independent t test with equal variances, n1= 24, n2= 28, S1= 8, S2 = 9 Find the correct…

A: given data  n1= 24, n2= 28, S1= 8, S2 = 9 independent t test with equal variances df = ?

Q: Find the standard deviation for the following six cities with relatively high cost of living.…

A: Given: n = 6 Formula Used: Standard deviation s = ∑Xi-X2n-1

Q: Explain in words what effect an increase in confidence level would have on the width of the…

A: Given information: The statement is given related to the effect of an increase in confidence level…

Q: The Psychology Club is trying to submit their budget for the semester to the Office of Student…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: Find the probability mass function (pmf) and cumulative distribution function (cdf) of Y with…

A: Given that Y with Binomial Discrete Distribution with n=2 and p=1/2 or Y~Bi(2,1/2). Formula: If…

Q: 2. # of Absences (in weeks) Exam Grade 1 2 3 4 5 23 014 90 85 95 92 80 Correlation analysis of the…

A: Given: n = 5 The correlation coefficient r = -0.98 α = 0.01 Formula Used: Test-statistic t =…

Q: Researchers conducted a study to determine whether magnets are effective in treating back pain. Pain…

A: Given that: Reduction in Pain Level After Magnet Treatment: n1=15x¯1=0.55s1=0.95 Reduction in Pain…