1. Generate random 100 MVN data, p=20. The covariance matrix should be positive semi- definite symmetric matrix. (1) Show the generated data matrix. (2) Plot the scatter plot to show the correlation among variables.

Q: Determine whether the following value is a continuous random variable, discrete random variable, or…

A: Discrete variable:   It is nothing but it takes or considers only the countable number of values or…

Q: Consider a drug that is used to help prevent blood clots in certain patients. In clinical trials,…

A: Given n = 5762 x = 165

Q: A confidence interval for a population mean has length 22 A) Determine the margin of error B) If…

A: Answer: From the given data, Confidence interval for a population mean has length is 22,

Q: c) Write down the contrasts (calculate by hand, or use the statistical package of your choice) and…

A: (i) Contrast for Mathematics-State A vs Mathematics-State B: H0:μMA=μMBH1:μMA≠μMB (ii) Contrast for…

Q: A survey was conducted that asked 1018 people how many books they had read in the past year. Results…

A: According to the given information in this question We need to construct 90% confidence interval

Q: 5. If a sample of n = 86 students were taken randomly from the school, describe the distribution of…

A: Suppose it is known that the proportion of students at a local high school that take publictransit…

Q: Suppose a clinical psychologist sets out to see whether sexual orientation is related to…

A: In the given scenario, one of our variable of interest is of continuous type and the other variable…

Q: a normal population with a standard deviation of 10. The sample mean is 48. Determine the 95%…

A: We have given that,  Sample mean (x̄) = 48, Population standard deviation (σ) = 10 and sample size…

Q: find the p-value for the hypothesis test with the standard test statistic z. decide whether to…

A: 14. Left-tailed test (z=-1.55, α=0.05​) NOTE:- According to bartleby guidelines expert can solve…

Q: ㅋ 22. Bill runs a bicycle repair shop. During the summer months the number of jobs per week follows…

A: Given that The number of jobs per week is normally distributed with Mean (μ) = 45 Standard deviation…

Q: (d) Construct and interpret the confidence interval for the difference in mean sea level between the…

A:

Q: The table above preformed Likelihood Ratio Tests comparing each model to the saturated model (ZXY).…

A: perform a likelihood ratio test to determine which model fits the data better comparing model…

Q: Write the hypothesis statement? 2) what is the Standard error? 3) the z value?

A: Test whether these is a difference between two groups in the proportion who coted, if 45 out of a…

Q: Using standard normal distribution or Z distribution, Find the below probability P(Z > 0.71)

A: Answer: Using Standard normal distribution (or) Z distribution, We have to find, P(Z > 0.71)

Q: Claim: p + 0.23; 2: 0.10; Sample Statistics : p=0.17, n = 100 A.) Find the 2- test static. Select…

A: We have given thatp = 0.23 p̂ = 0.17  n = 100Significance level (α) = 0.10

Q: population standard deviation is known to be o = 0.16 centimeters. What is the test statistic z? Ex:…

A: That is, there is no evidence to conclude that the length of bolts is greater than the mean value of…

Q: A local tennis pro-shop strings tennis rackets at the tension (pounds per square inch) requested by…

A: x¯=50, s=3.2, n=12, α=0.05

Q: he manager randomly selects 22 pistons and determines that the standard evidence for the manager to…

A: Sample size n =22 Standard deviation =0.0052

Q: Find the margin of error for the given values of c,o and n C = 0.99, o = 522 and n= 36 Round to two…

A: Answer: From the given data, Sample size(n) = 36 Standard deviation(σ) = 522 Significance level(α) =…

Q: The table below shows the amounts of crude oil (in thousands of barrels per day) produced by a…

A: Obtain the 99% prediction interval for the amount of crude oil produced by the country is 5634…

Q: 8. Hypothesis Test of Equal Variances. Test the given claim. Use a significance level of a = 0.05…

A: That is, there is no evidence to conclude that the population mean 1 is less than population mean 2.…

Q: that a simple random sample has been selected from a normally distributed population and the null…

A: x x2 736 541696 758 574564 1375 1890625 715 511225 677 458329 521 271441 ∑x=4782…

Q: Referring to this table, determine the A value corresponding to the z value for a 6-minute-assembly…

A: Mean,  x=7 minutes Standard deviation, s=0.4223 minutes The table on the area under the normal…

Q: The technical support department at a technology company sampled 100,000 calls and reported that the…

A: Sample size n =100000 Sample mean=5.5 Population standard deviation =1.45

Q: to the binomial dist test two-tailed, left-tailed, or right-tailed? eft-tailed test tight tailed…

A: Sample size n =294 Favorable cases x =27 Sample proportion p^=x/n  =27/294 =0.0918

Q: You may need to use the appropriate appendix table or technology to answer this question.…

A: Company A Company B Sample size 71 52 Sample mean 44 39 Population standard deviation 11 12

Q: A robot is going to attempt the same task 100 times. Each time it tries, it will either succeed or…

A: Given a robot will try to perform the same task 100 times. The probability of success is 0.85. Let X…

Q: 2. Using the estimated cosine trend on page 192 in the textbook: (a) Forecast the average monthly…

A: (a) To forecast the average monthly temperature in Dubuque, Iowa, for April 1976, we need to plug in…

Q: c) Write down the contrasts (calculate by hand, or use the statistical package of your choice) and…

A: (i) Contrast for Mathematics-State A vs Mathematics-State B: H0:μMA=μMBH1:μMA≠μMB (ii) Contrast for…

Q: There are 5 dark chocolates, 8 milk chocolates in a box. If one chocolate is selected from the…

A: Answer: From the given data, Number of dark chocolates in the box = 5 Number of milk chocolates in…

Q: Students estimated the length of one minute without reference to a watch or clock, and the times…

A: We have given data 67,80,40,64,42,23,61,63,67,49,66,70,95,90,64 We make the following table for the…

Q: Exercise 5.4.1. Let Z~Nor (0, 1) and define X₁ = Z and X₂ = Z². Compute rp (X₁, X₂), (XX.) and r. (Y

A: Z~Nor0,1

Q: Data on the weights (lb) of the contents of cans of diet soda versus the contents of cans of the…

A: Hypothesis is as assumption that is being tested.

Q: Suppose a researcher is interested in determining how friends and family arrive to parties. The…

A: "As you have posted more than three sub-parts but we are entitled to solve only three at a time. So,…

Q: A study was done using a treatment group and a placebo group. The results are shown in the table.…

A: Let us consider two samples that follow the assumption of the normal population.  Here, the…

Q: Problem 13-8 Value-at-Risk (VaR) Statistic (LO4, CFA6) Woodpecker, Inc., stock has an annual return…

A: To find the smallest expected loss in the coming month with a probability of 2.5 percent, we need to…

Q: In a random sample of eight ​people, the mean driving distance to work was 19.3 miles and the…

A: The question is about confidence interval Given : Randomly selected no. of people ( n ) = 8 Sample…

Q: Do ESL students score lower in English college placement tests than the national average? A…

A: The random sample of size, n=53 The sample mean, x¯=147.9 The population standard deviation, σ=15…

Q: ople or more 18. The lifetime of a flashlight battery is normally distributed with a mean = 35.6 hr…

A: The lifetime of a flashlight battery is normally distributed with a mean = 35.6 hr with standard…

Q: Reducing scrap of 4-foot planks of hardwood is an important factor in reducing cost at a…

A: The question is about confidence interval Given : No. of sample of planks examined under old method…

Q: n a poll of 500 adults in July​ 2010, 270 of those polled said that schools should ban sugary snacks…

A: n= 500 Sample size  x= 270 success  p^=xn=270500=0.54  Sample proportion  p= 0.50 Population…

Q: mean median mode and range 1,1,7,3,2,2,3,5.

A: Data are X: 1,1,7,3,2,2,3,5.

Q: An employment information service claims the mean annual salary for senior level product engineers…

A: The question is about hypo. testing Given : Data : No. of samples ( n ) = 16   To find : a ) claim,…

Q: You may need to use the appropriate technology to answer this question. In order to determine…

A: The question is about paired t test Given :   To find : a ) Test stat b ) p value and conclusion

Q: 50. In which histogram (or histograms) would the 51. For which data set would we expect the standard…

A: Histogram is a graphical representation that depicts the distribution of data.  If the histogram is…

Q: a random sample of 8 ​people, the mean commute time to work was 33.5 minutes and the standard…

A: According to the given information in this question We need to construct 90% confidence interval and…

Q: Using an ? = 0.04, a confidence interval for a population proportion is determined to be 0.55 to…

A: Answer  Given  level of significance [α] =0.04 a confidence interval for a population proportion is…

Q: Use contingency table to test if the change in heart rate after using a neutral word…

A: The data is given in the summary table for neutral words and real swear words. let us take the…

Q: Find the coefficients for the least-squares regression line y^=b0+b1x through the points…

A: points is (−2,0),(2,6),(4,14),(9,20),(9,25) x y -2 0 2 6 4 14 9 20 9 25

Q: Thank you for bringing this to my attention and thank you for explaining the concepts as well as you…

A: Mean, x =9.22 Standard deviation, s=2.2811 The z-value corresponding to a 5-minute assembly time.…