Ten large industrial corporations yield the following data: Company | Sales (in Millions $) | Profits (in Millions $) | Assets (in Millions $) | Oil Corporation A. 126974. 4224 173297 96933. 160893 86656 83219 63438 77734 55264 128344 50976 39080 39069 38528 36156 35209 32416 ABCDEFGH-? B. с 3835 3510 3758 3939 1809 2946 359 2480 2413 a. What is the average profit of these 10 companies? b. What is the median of the profits? 51038 34715 25636 No No Yes No No Yes No No Yes Yes c. What could you in general tell about the distribution of a variable if its median is higher than its average? d. What is the range of profits? e. What is the general disadvantage of using the range as a measure for the spread of a variable? f. Which measure for the spread of a variable does not have this advantage?

Q: A quality control program is being developed for computer hard-drivers. The mean fraction defective…

A: Given information: The mean fraction defective in the samples in the past has been 3%. Let,…

Q: A data set about speed dating includes "like" ratings of male dates made by the female dates. The…

A: Given that   x̄ = 7.83 ,  μ = 8 , s = 2.17 , n = 199

Q: You are presented with the following data: Time spent doing homework/day (X) 0 0 0 20 30 45 80 127…

A: The following information has been provided: X Y 0 90 0 40 0 120 20 45 30 60 45 27…

Q: There is a relationship between the height and the volume of wood in a tree. a) Use regression to…

A: Given: n = 8 Formula Used: The regression model  is: Y = a + bX b = n∑XY-∑X∑Yn∑X2-∑X2 a = ∑Y-b∑Xn

Q: The polynomial regression model of degree r is given by Y₁ =B₁ + B₁X₁ + B₂X² + ... + ³₂X² + U₁.…

A: Hint This problem can easily be solved and understand using graph.

Q: software system. In planning for the operating system that he will​ use, he needs to estimate the…

A: Given that  Margin of error =E =5%=0.05

Q: In a test of effectiveness of garlic for lowering cholesterol, 44 subjects were treated with garli…

A: From the provided information, Sample size (n) = 44 Sample mean (x̄) = 3.9 Sample standard deviation…

Q: f(x, y) = { 0, elsewhere The following picture (not to scale) shows the "support" of this joint pdf:…

A: Note: In the given question multiple sub-parts are there, as per the guidelines first 3 questions…

Q: Fitness App Use and Gender (Example 6) In a 2015 study reported in the Journal of American College…

A: From the provided information, Use Male Female Total Yes 84 268 352 No 9…

Q: Nationally, patients who go to the emergency room wait an average of 6 hours to be admitted into the…

A: Given,sample size(n)=13sample mean(x¯)=8.6sample standard deviation(s)=2.9population mean(μ)=6and…

Q: John took some samples of a size of 200 items in a process. From the samples, he observed that the…

A: Given that,

Q: If the correlation between the two independent variables of a regression analysis is 0.11, and each…

A:

Q: The HEALTH resources and services. reported that 6% of people who recieved Kidny transplants were…

A: Given Information: The proportion of the people who received kidney transplants under the age of 18…

Q: 170 Are Humans Like Random Number Generators? (Example 30) One of the authors collected data from a…

A: Given: Integer observed 1 3 2 5 3 14 4 11 5 5   38 Level of significance = 0.050

Q: An ANOVA procedure is applied to data obtained from four distinct populations. The samples, each…

A: Given  a=4, b=17

Q: John took some samples of a size of 200 items in a process. From the samples, he observed that the…

A: It is given that the fraction defective is 0.05 and the standard deviation is 0.05.

Q: For the data and sample regression equation shown below, do the following. a. Decide, at the 10%…

A: The given values are ∑xi=10,∑xi2=30,b1=2.2,se=5.7359.

Q: According to the empirical rule (or the 68-95- 99.7 rule), if a population has a normal distribu-…

A:

Q: Determine the percentage of scores for a normal curve between z = -0.9 and z = -1.55

A: The z-scores are -0.9 and -1.55.

Q: Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing…

A: Measures of Central Tendency: A summary measure called a measure of central tendency, also known as…

Q: Prob-7 Hospital workers who are routinely involved administrative radioactive tracer to patients are…

A: Solution: Given information: n= 28 Sample size  x=5.145 Sample mean s= 0.7524 Sample standard…

Q: A particular fruit's weights are normally distributed, with a mean of 242 grams and a standard…

A:

Q: In a random sample of 41 professional actors, it was found that 15 were extroverts. Find a 99%…

A: We have given that  n = 41x = 15p̂ = x/n = 15/41 = 0.3659Confidence level (c) = 99% =…

Q: State the O Ho: Median time without relaxant - Median time with relaxant H₂: Median time without…

A: Given data: Subject Yes No 1 16 11 2 13 9 3 23 13 4 8 10 5 10 9 6 6 5 7 8 9 8 10…

Q: 17. A 20,000-piece manufacturing run of 2200 resistors has a mean value of 2200 (naturally!) and a…

A: Given information: μ=220 Ωσ=2.5 ΩTolerance level=2%N=20,000 Note:  Ω symbol is shown as 0 in the…

Q: A university would like to describe the relationship between the GPA and the starting monthly salary…

A: The given data shows the starting monthly salary of a graduate and GPA.

Q: X 1 2 3 y 1 X 1 2 5 7 Line A: y = -1 + 4x ŷ y 1 5 Complete the table for x, y, y, e, and e² for Line…

A: Given: x y 1 1 2 5 3 7

Q: see the answer for #6 but can not find #7-10?

A:

Q: Find the value of k for which the given function is a probability density function. f(x) = kekx on…

A: Given: Probability density function fx=kekx on 0, 7 The objective is to find the value of k.

Q: The population mean and standard deviation of a normally distributed random variable is 3.5 and 2.12…

A: Mean(µ) = 3.5Standard deviations (σ) = 2.12X ~ N (µ, σ )= N(3.5, 2.12) Formula for z-score z =  (x…

Q: A newspaper asks two of its staff to review the coffee quality at different trendy cafés. The coffee…

A:

Q: Suppose you are doing a hypothesis test for a population proportion p, and we have: Ho: p = 59.25%…

A:

Q: Calculate the standard error for a sample mean when the population standard deviation is 221.6 and…

A: Given data N = 36 SD = 221.6

Q: Which of the following statements is NOT correct about the hypothesis test of comparing two…

A: We have to find that which of the following statements is NOT correct about the hypothesis test of…

Q: How do you interpret a coefficient of determination, r², equal to 0.08? Choose the correct answer…

A: Given datar2=0.08

Q: 9.33 Confidence Interval Changes State whether each of the following changes would make a confidence…

A:

Q: 9.13 Chapter 9: Section Exercises (Example 30) Income in Maryland According to a 2018 Money magazine…

A: Given: μ = 75847 σ = 32000 n = 100 Formula Used: Z-score = X-μσn

Q: Why do phillips curves look different across different countries?

A: Reason-  As we know the Phillips curves is define as the inverse relationship between the level of…

Q: According to the Internal Revenue Service, 75% of all tax returns lead to a refund. A random sample…

A: From the provided information, 75% of all tax returns lead to a refund that is p = 0.75 Sample size…

Q: Exercise 5.2 A language teacher is concerned about the vocabularies of his students. He thus tests 5…

A:

Q: Over the past several months, an adult patient has been treated for tetany (severe muscle spasms).…

A: Given information- We have given that over the past several months, an adult patient has been…

Q: 9.9 Driving (Example 10) Drivers in Wyoming drive more miles yearly than motorists in any other…

A: Given that  Mean = M = 22306 Standard deviation = SD = 5500 Sample size = n = 200

Q: At most 33% of workers indicate that they are dissatisfied with their job. Express the null and…

A: The claim is that at most 33% of workers indicate that they are dissatisfied with their job.

Q: Which of the following statements is NOT correct about the hypothesis test of comparing two…

A: a) As the sample size increases, the critical value for the z-test will become smaller in absolute…

Q: 1. To calculate a 68% confidence interval what z score value should you use? A. 1.00 B.1.96 C. 2.58…

A: Given Ci = 68%      = 0.68 α  = 1- 0.68 = 0.32

Q: The researcher runs an OLS regression with five regressors and a constant on a sample of 453…

A:

Q: 2. The distribution of a random number X is Uni(0, 1). Find the probability that (a) the first…

A:

Q: A 20,000-piece manufacturing run of 2200 resistors has a mean value of 2200 (naturally!) and a…

A: Given Information: Consider the given information:     Mean μ=2200Standard deviation σ=2.50

Q: (a) an even number? (b) a number greater than 9? (c) an even number greater than 9? (d) an even…

A: Given:  Twelve sided die rolled once then sample space S={ 1,2,3.........12}  Probability of each…

Q: Suppose that 50% of the population of U.S. voters favors a particular presidential candidate. If a…

A: Given that 50% of the population of U.S voters favors a particular presidential candidate. Random…