4.15 Law School The scatterplot shows the LSAT (Law School Aptitude Test) scores for a sample of law schools and the percent of students who were employed immediately after law school graduation. Do you think the correlation coefficient among these variables is positive, negative, or near zero? Give a reason for your choice. (Source: Internet Legal Research Group) % Employed at Graduation 100- 80 60 40 20 0 % Employed at Graduation vs. LSAT 150 155 160 165 170 175 LSAT

Q: 5) People were asked if they prefer Pepsi or Coke. The results are in the table below. Female Male…

A: ( a ) P( both prefer Pepsi) = ? ( b ) P( Female or Coke ) = ?

Q: Use StatKey or other technology to find the correlation of the data in the table. X 1 Y 81

A: Solution: X Y X2 Y2 XY 1 81 1 6561 81 2 96 4 9216 192 3 87 9 7569 261 4 89 16 7921 356…

Q: A newsgroup is interested in constructing a 99% confidence interval for the proportion of all…

A: Givensample size(n)=583x=372p^=xn=372583≅0.6381confidence level=99%

Q: The following output models the factors that influence the price of a particular good. Calculate the…

A: Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: Use the following Distributions tool to identify the boundaries that separate the extreme samples…

A: Z-score is a measure that indicates how many standard deviations away, a data value lies from the…

Q: What is the relative frequency of the (-4,4) interval? (Note, both endpoints not included in…

A:

Q: Use the normal distribution to find a confidence interval for a difference in proportions p1−p2p1-p2…

A: Given A 95% confidence interval p^1=0.20 n1=60 p^2=0.40 n2=80

Q: A barber shop has homogeneous, independent arrivals every 10 minutes.  The interarrival times are…

A: Queuing theory

Q: At one college, GPA's have a distribution that is unimodal and symmetric with a mean of 2.6 and a…

A: Given Mean= 2.6 Standard deviation=0.5

Q: Find the z-score that cuts off 65% in the body on the left.  (Hint: if you can’t find that EXACT…

A:

Q: Round your answer to three decimal places. r = i

A: Use the Excel and Calculate the Correlation  Followings are the Steps to Calculate Correlation 1)…

Q: 9) The checker shown below cannot enter the square with an X, but can jump over it. How many paths…

A: Given that: A checker is placed at bottom-right corner over the checkboard and it can move…

Q: An insurance company prices its Tornado Insurance using the following assumptions: • In any calendar…

A: The given probability of a tornado is 0.12. Let X: No. of tornadoes. X ~ Binom(n = 14, p = 0.12)

Q: What does course median mean on a report card. My mark for the class I am taking is 80% and the…

A: Descriptive statistics

Q: For a z-score of Z = -1.75, give the proportion in the body (hint: use the z-table), and state…

A: Given For a z-score of Z = -1.75

Q: A data set includes 108 body temperatures of healthy adult humans having a mean of 98.2°F and a…

A:

Q: Why is 150 x 298 if one couple has been chosen? Shouldn't it be 149 x 298, since one couple has been…

A: here the total number of couples =150 Total number of people =300 number of people in one team =3

Q: QUESTION 1 COVID-19 virus has been categorized as a pandemic in March 2020 by the World Health…

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

Q: Use the following conditional expectation to answer the following 3 questions. E(2X²Y+4Y+1.3X |X)…

A: E (2 X2 Y + 4Y + 1.3 X | X) = 2 X2 E(Y |X) + 4 E(Y|X) + 1.2 X

Q: Η 0.1 0.4 11 0.25 C

A:

Q: Example 18.2 For the probability density of a system of random variables (X, Y): f(x, y) = 0.5 sin…

A:

Q: a recent case control study on hypertension and the use of Oral Contraceptives (OC) in Queens, NY, a…

A: 2700 women were diagnosed with hypertension 1200 didn't have a history of OC Have history of OC =…

Q: A​ student's course grade is based on one midterm that counts as 10​% of his final​ grade, one class…

A: Given Course grade  on one midterm 0.10 Final​ grade on class project 0.20 Final​ grade a set…

Q: if the gpa is 2.75 of 600 students with a confidence level of 90% what is the margin of error if the…

A:

Q: A) The age of most of the B) The age of most of the C) The ages of most of th D) None of these.

A: Given that Excel data summary  To find out the  factor summarizing the variability in the data set

Q: . A pharmaceutical company conducted a study to test the effectiveness of its new antidepression…

A:

Q: A Markov chain {x}=0,1,2,... satisfies the difference equation x = Ax-1 for every k ≥ 1, where 0.8…

A:

Q: n a trial of 350 patients who received 10-mg doses of a drug daily, 49 reported headache as a side…

A: 350 patients who received 10-mg doses of a drug daily; n=350 49 reported headache as a side effect;…

Q: Mars, Inc. states that 16% of all milk chocolate M&M’S® produced are green. A group of students took…

A: 1)Given20 samples of M&Ms with sample size 3020 samples of M&Ms with sample size 60. To…

Q: It is known that if a signal of value is sent from location A, then the value received at location B…

A:

Q: A population of values has a normal distribution with μ=169μ=169 and σ=72.9σ=72.9. You intend to…

A: According to the given information in this question We need to find the z score for two parts

Q: You have 100 observations On y with average value 15, and O1 X= with average value 8_ From all OLS…

A:

Q: The SAT scores for students are normally distributed with a mean of 1150 and a standard deviation of…

A:

Q: mine the relationship between job performance rating (y) and scores on four tests. The data are as…

A: Given: y x1 x2 x3 x4 11.2 56.5 71 38.5 43 14.5 59.5 72.5 38.2 44.8 17.2 69.2 76 42.5 49…

Q: Suppose we select 6 observations from each of three treatments. The appropriate degrees freedom are…

A: Here given we select 6 observations from each of three treatment  We have to find appropriate…

Q: A humane society claims that less than 73​% of households in a certain country own a pet. In a…

A: A random sample of 700 households in that​ country, 490 say they own a pet. n=700 x=490 α=0.01​

Q: The following data are the temperature of effluent at discharge from a sewage facility on…

A: The given data represents the effluent temperature at discharge from a sewage facility.

Q: Which distribution should you use? You are approximating the proportion of the population in…

A: Sometimes observation are taken on qualitative characteristics. In this case number of observations…

Q: a parabolic curve that would fit the following data. Let  y = a + bx + cx2. x      3    5     6…

A: For the given data, We have to fit second degree polynomial From equation of second degree…

Q: Consider the Gamma distribution, with parameters α and λ. Compute the hazard function of a Gamma…

A:

Q: A The number of girls in a family B The colour of hair C The gender of a person D The length of a…

A: “Since you have posted multiple questions, we will solve first questionfor you. To get the remaining…

Q: What is the odds ratio for the association between Adults vs. Children and COVID-19?

A: An odds ratio evaluates a demographic's connection between one attribute A and another attribute B.…

Q: 7.64 Historically, 93% of the deliveries of an overnight mail service arrive before 10:30 the…

A:

Q: 1. a. b. The following table contains data on the relationship between savings and income: INCOME…

A: Given data: INCOME (per year) SAVINGS (per year) $15,000 $1,000 $0.00 -$500 $10,000 $500…

Q: What is the entropy when the delivery is blended?

A: Decision tree

Q: Assume that a sample is used to estimate a population mean . Find the 99% confidence interval for a…

A: Givensample size(n)=376Mean(x)=16.8standard deviation(s)=15.9Confidence interval = 99%

Q: 8. A man invested $10,000, part at 5% and part is 9%. If the total interest was $660, much did he…

A: The principal is the amount that used to deposited initially. Interest is the amount that calculated…

Q: A psychologist would like to know whether the change in seasons has any consistent effect on…

A: Use the Excel And Perform the One way anova Followings are the steps to perform the One way anova…

Q: The number of men and women among professors in Math, Physics, Chemistry, Linguistics, and English…

A: Given: Dept. Math Physics Chemistry Linguistics English Total Men 46 55 26 12 20 159 Women 4…

Q: Find the minimum sample size needed to estimate the percentage of managers who have a cat. Use a…

A: Given For 99.8% CI is 2.8782 P=0.5 Margin of error=0.06