What is the purpose of a scatterplot? Why will you rarely find a perfect correlation between any two variables? Search “scatterplot” in Google News and report how it is used in the article.

Q: The average length of “short hospital stays” for men is slightly longer than that for women, 5.6…

A: Given that  Men Women Sample size 39​ 34​ Sample mean 5.6 days 4.3 days Population standard…

Q: An oceanographer claims that the mean dive duration of a North Atlantic right whale is 11.6 minutes.…

A: T distribution has utilized.

Q: Let Find fa, fay and fryz f(x,y)=In(xy)-26x¹0 y 10

A: For the given function, f(x, y)  We have to calculate fx, fxy, fxyx It is also known as, first…

Q: You are interested in finding a 98% confidence interval for the average number of days of class that…

A: Given,sample size(n)=13degrees of freedom(df)=n-1df=13-1=12α=1-0.98=0.02α2=0.01t0.01(12)=2.681…

Q: A random sample of 25 bottles of Vitamin C contains, on average, 325.05 mg with a standard deviation…

A: Given,sample size(n)=25sample mean(x¯)=325.05sample standard deviation(s)=0.5degrees of…

Q: A researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 35…

A: Given : Margin of error =0.5 Standard deviation (s) =7 Confidence level =95%

Q: d. An order for an automobile can specify either an automatic or a standard transmission, either…

A: Given  The choices of ordering a car .we need to determine the possible orders or the sample spce of…

Q: Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She…

A: Given Mean=X=14.3 Sample standard deviation=s=2.2 Random sample size=n=41 Confidence interval=90%…

Q: surements are in inches. Using R and write the code out. a) What is the probability that X < 59?

A: Given: Normal distribution contains, Mean is 65 inches SD is 3 inches n=180

Q: Find the range, quartile deviation, mean deviation about the mean, mean deviation about the median,…

A: given , class frequency  2-4 2 4-6 5 6-8 4 8-10 7 Total 18

Q: Use the Standard Normal Distribution table to find P(-1.27 < Z ≤ 0).

A: Standard normal distribution shows the bell shaped form. The each tail has area of 0.5. The…

Q: .The head of the production department of a RM Electronic Company wants to determine the…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: The mean voltage and standard deviation of 14 batteries from each manufacturer were measured. The…

A:

Q: The average time to run the 5K fun run is 20 minutes and the standard deviation is 2.4 minutes. 10…

A: Given Mean=20 Standard deviations=2.4 Sample size=10

Q: Private nonprofit four-year colleges charge, on average, $27,647 per year in tuition and fees. The…

A: Given that.   X~N( μ , ?^2 )   μ= 27647    , ?=7041   Z-score =( x - μ )/?

Q: Assume that we want to construct a confidence interval. Do one of the following, as appropriate:…

A: Given 95 %confedence level

Q: Two persons participated in five shooting competition and were able to hit the target correctly out…

A: By uniformity in performance we mean there there exists less variability. Lesser the variability…

Q: The mean amount of time it takes a kidney stone to pass is 15 days and the standard deviation is 6…

A: Given that.   X~N( μ , ?^2 )   μ=15     , ?=6   Z-score =( x - μ )/?

Q: The number of ants per acre in the forest is normally distributed with mean 42,000 and standard…

A: Given mean=42000 Standard deviations=12189

Q: Using data for the years 2005 to 2019 for US, an economist obtained the following demand function…

A:

Q: e approach in each of the 3 s High Impact Medium 71400(0.7) 215500(0 140000/0 94750/02)

A: The expected value approach in 3 scenarios in new warehouse, increase capacity and no change.

Q: Side effects: A new medical procedure produces side effects in 26% of the patients who receive it.…

A: Given that  A new medical procedure produces side effects in 26% of the patients who receive it. P =…

Q: Let y be a random variable. In a population, μy = 139 and 50. Use the central limit theorem to…

A: Obtain the probability that the sample mean of the random variable Y is less than 140. The…

Q: Quasi experimental design

A: Types of experimental designs: 1. True Experiment: Samples are assigned randomly to experimental…

Q: A nutritionist claims that the mean tuna consumption by a person is 3.5 pounds per year. A sample of…

A:

Q: A researcher wanted to compare the pulse rates of identical twins to see whether there was any…

A: Givn n=8 Confidence interval 99%

Q: Explain the Holt-Winter and Brown forecasting technique

A: Holt winter’s algorithm has wide areas of application. It is used in various business problems…

Q: — (i) For any {(xi, Yi)}=1, Sxy = = n n i=1 (xi — x)Yi n 1 ii) For any {(xi, Yi)}_1, Sxy = = ΣXi Yi…

A: Answer: i)

Q: Find the indicated probability by using the special addition rule. The age distribution of students…

A: Given that : A frequency table is given here.  First column has age groups and the second column has…

Q: A group of investigators wishes to explore the relationship between the use of hair dyes and the…

A: Given Information: Sample size n=100 Out of which x=20 cases have cancer. Assume that breast cancer…

Q: Multiple Regression call: 1m(formula Energy Bar Sprice - Energy_BarScalories + Energy_Bar Sprotein +…

A: The following are the interpretations of the given results.

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 67 mph and…

A: Solution

Q: viii. Calculate SD ix. Calculate Variance x. Calculate MSD about 30.

A: Measure of dispersion are used to determine the spread of the data set. It has some measures like…

Q: A local service station is opened 7 days per week, every day of the year. Sale of its premium grade…

A: Given  No of cans being sold out =40 per day  Standard deviation=9.15 Cost of each can of oil=$15 We…

Q: You work for the U.S. Food and Drug Administration. You have gotten word that a drug manufacturing…

A: Given data: .

Q: A new laptop was about to be released in the market. It is out for some alpha testing.The…

A: Introduction: Denote μ as the true average battery life of the laptop.

Q: An alumni association wants to estimate the mean debt of this year's college graduates. It is known…

A:

Q: Find In, 12 and 13 1.30=36C 1₁)-15 (1₂)-12 (13) 2-25=-15CIA) +75 C £27-40CF30 3.50-12C₁) -40 (5₂) +…

A: From the given information we solve the equation.

Q: Consider the following data for a dependent variable y and two independent variables, 1 and 2. x1 29…

A: Solution: Given information: k= 2 independent variables n= 10 observation  SST= 15147.6  SSR=…

Q: A soda company has a machine that is set to fill each can with 12 ounces of soda. It actually fills…

A: It is given that X follows Uniform(a = 11.5, b = 12.5), then the cumulative distribution of X is…

Q: these ans

A: NoItems Time 1 4.8 1 14.7 1 13.7 1 9.5 1 2.4 1 11.8 2 10.5 2 12 2 14.3 2 16.4…

Q: According to a study done by UCB students, the height for Martian adult males is normally…

A:

Q: (QUESTION 3) Let the rate of accident in a city is 7 during half a day. What is the probability that…

A: Given:  Let x be the number of accident in a city with rate 7 accident half a day(12 hour)   Half…

Q: What is the significance of the mean of a probability distribution? Choose the correct answer below.…

A:

Q: The numbers of clients, during a special event, of several tourist agencies in 7 11 27 21 Luzon are…

A: Given data is6,10,25,20,2,29,22,15,12,17,9,7,11,27,21,3,31,24,16,13,19sample size(n)=21

Q: 11. The mayor of a town is considering improving its public sporting facilities. To fund this…

A: Given that: Sample mean, n = 150 Sample proportion, p^=0.44

Q: A certain kind of sheet metal has, on average, 4 defects per 20 square feet. Assuming a Poisson…

A: The answer is attached below,

Q: 3. In a survey of statistics students, it is found that 54 use RStudio, 43 u and 32 use Stata, for…

A:

Q: An alumni association wants to estimate the mean debt of this year's college graduates. It is known…

A:

Q: Drag the correct answer into the designated slot in the following distributions:

A: here use basic Property of Curve  here in each curve mean are equal  as curve wider , distribution…