company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and other features. The distribution of the number of months in service for the fleet of cars is bell-shaped and has a mean of 40 months and a standard deviation of 3 months. Using the empirical (68-95-99.7) rule, what is the approximate percentage of cars that remain in service between 46 and 49 months? Caution: Using tables or Excel for this may produce a wrong answer. Use the 68-95-99.7 rule. Answer =

Q: Q 1. interest y. Consider the following bivariate data of an independent variable x and dependent…

A: The question is about correlation and descriptive stats Given :   To find : a ) mean, sample var.…

Q: Consider the frequency table Mr. Rosencrantz made from the densities that some of his students…

A: The frequency table Mr. Rosencrantz made from the densities that some of his students calculated as…

Q: A cement company sells his production in different cities through the appointed dealers. Th sales of…

A: Given: Sales  0 - 500 500 - 1000 1000 - 1500 1500 - 2000 2000 - 2500 2500 and more Number of…

Q: The information below is from the small population of 5 students. The 10 possible SRSS of size n = 3…

A: The objective is to find the median quiz score for each sample and display the sampling distribution…

Q: A city recently held interviews for 4 jobs available. Even though there were 12 Republicans among…

A: Given that The total number of applicants is 20 The number of  republicans is 12 The number of jobs…

Q: You model a loss process using a lognormal distribution with parameters and o. You a given: (i) The…

A: From the given information, The maximum likelihood estimates of μ and σ are μ^=4.215 and σ^=1.093.…

Q: 7. In 2005, the Edmonton Miners hosted The Minto Cup Junior A Lacrosse Champic Here are the 2005…

A: Given data: Player Games Goals Assists Points Penalty minutes Jeremy Boyd 13 2 8 10 54 Dan…

Q: What is the expected number of successes for a binomial distribution when n = = 5 and p = 0.3? H np…

A: Givenn=5p=0.3

Q: Lucy is enrolled in Geometry.  She believes she would have a higher average in Mrs. Sweet’s class…

A: It is given that,  The claim is that Lucy thinks that she has a higher average in Mrs. Sweet's class…

Q: Ho:μ = 0.3 H₁:μ 0.3 Ο Η: μ 2 0.3 Hy:μ 0.3 Ο Η: μ 0.3 Ho: p = 0.3 H₁:p 0.3 The null hypothesis in…

A: given data claim : p = 0.3CL  = 99% n = 220x = 48perform hypothesis test for single proportion.

Q: Use the data in the following table, which lists drive-thru order accuracy at popular fast food…

A: The question is about probability Given :   To find : 1 ) Prob. of getting an order from restaurant…

Q: What kind of analysis involves discussing the center of the data in a sample (e.g., the mean or…

A: Introduction Mean, median and mode are the measures of the central tendency.

Q: Company Name Gannett Co. General Dynamics Corp. Genworth Financial Inc. Harman International…

A: There are two variables. ‘Year founded’ and ‘Employees’.  Years and Employees in ascending order:…

Q: could you please tell me how to explain to a friend who does not know anything about statistics the…

A: Solution:- Sure! In hypothesis testing, a confidence interval represents the range of values that we…

Q: In each of the following situations, you are given some information about the probabilities of…

A: The objective is to provide an ideal situation, in which the prob. of one of the two outcomes is 27.…

Q: Lecturers at a university intend to see the effect of stress relief strategies such as deep…

A: It is given that: From Cohort 1: n1=17, x¯1=61, s1=17 From Cohort 2: n2=11, x¯2=67, s2=19

Q: The rate of increase of COVID-19 infection is directly proportional to the number of people infected…

A: Given information: An isolated remote Barangay of population 10,000 records its first case on June…

Q: Given the sets: U = {a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z) A…

A: We have given that U = { a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z} A = { a,e,i,o,u,y} B =…

Q: Can you please answer all of the questions about the information provided.  Background Previous…

A: Note: Hi! Thank you for the question. As you have posted multiple sub-parts, according to our…

Q: Would it be unlikely to randomly select four people and find that they all use vision correction?…

A: In this case, each considered people has the only options of "using vision correction" (defined as…

Q: The lengths of adult males' hands are normally distributed with mean 194 mm and standard deviation…

A: Given that: Population mean, μ=194 Population standard deviation, σ=7.1 Sample size, n=7

Q: e question 3-8 please, show all of your work, thank you.

A: Given data:   California New York Texas Total Interested 84 76 (a) (c) Not Interested 189 213…

Q: 30 students in a class take a pre-test; then, after 1 month the students retake a test of similar…

A: Given data: Student Pre-Test Post-Test 1 Post-Test 2 1 88 89 90 2 85 87 88 3 90 85 86 4…

Q: can you explain ? thank you !

A: Given that  From the given values  we have to find   How many measurements does the engineer need to…

Q: TRUE OR FALSE. If the relationship of x and y is perfectly linear, we can say that x causes y.

A: Introduction The relationship is perfectly linear when the points in the scatterplot lies on a…

Q: The table below shows a probability density function far the discrete random variable X, the number…

A: The question is about discrete probability distribution Given :   To find : Prob. that X is 1, 2 or…

Q: Consider this regression model: Yt = β0 + β1 Ut + β2 Vt + β3 Wt + β4 Xt + εt ; where t= 1, ..., 75.…

A: Solution:- a)Unbiasedness refers to the property of an estimator that its expected value is equal to…

Q: The manufacturer of a patent medicine claimed that it was 90% effective in relieving an allergy for…

A: a) Suppose p is the true proportion of people who were relived from an allergy using the…

Q: Select the corresponding expression for each scenario. The number of ways to award first through…

A: Permutation does not allow repetition of variables and combination allows repetition of variables.

Q: Question 4 A family software company operating in 4 cities in the UK would like to automate customer…

A: Let the random variable X denotes the number of complaints received when being served by a virtual…

Q: Question 3 random variables. Define Y as the sum of squares of these random variables: Suppose that…

A:

Q: An insurance company offers it's policy holder a number of different Premium Payment options. for a…

A: From the provided information, The probability distribution table is as follow: x P (x) 1 0.3…

Q: What is the cardinal number of the set expressed below: {ss is US state or Territory that has a name…

A: Introduction A set is the collection of objects.

Q: For each of the values of GPD, use the regression equation to predict the carbon dioxide emission…

A: Here regression equation is

Q: (d) Are the random variables X and Y independent? Justify your answer. (e) Let another probabilty…

A: Given  ∫0∞∫0∞fxy(x,y) dxdy = 7∫0∞∫0∞e-x-7y dx dy ; x,y≥0 The given probability distribution function…

Q: The percentage of people in the population who have certain disease is 22%. There is a test for the…

A: Answer: Given, The percentage of people in the population who have certain disease is 22%.  D: does…

Q: Hi. I got the answer to PART D of this question wrong even after asking an expert so please can you…

A:

Q: A community college wants to collect student opinions on campus technology. Each student is…

A: Given Information: The total number of students is 5000, out of which 3000 are University transfer…

Q: 6. Please help me ans this question well explained and calculated. 6.) The probability that a…

A: Given that The random variable X is the business person will cancel his reservation The probability…

Q: A manager decided that if more than 80% of users are classified as potential buyers, they will…

A: Given that, Percentage of users who are potential users (p) = 80% = 0.80 Explain how would work the…

Q: Do consumers spend more on a trip to Target compared to Walmart? Suppose researchers interested in…

A: The objective is to specify, if the considered samples are dependent or independent in nature, and…

Q: 4. The wall thickness of n glass of 2-liter bottles was measured by a quality-control engineer and…

A:

Q: Dex Research Limited conducted a research to investigate consumer characteristics that can be used…

A: Given that, Dependent variable (y) = amount charged by credit card users. Independent variables =…

Q: True or False: According to the results of this ANOVA table, Ho should be rejected

A: We have to find According to the results of this ANOVA table, Ho should be rejected.  True or False…

Q: Lecturers at a university intend to see the effect of stress relief strategies such as deep…

A: Given that: Cohort 1: n1=17x¯1=61s1=17 Cohort 2: n2=11x¯2=67s2=19

Q: 06 While sorting some change into piggy banks, Pedro put 202 coins in the first piggy bank, 185 *…

A:

Q: Y =)Z (n>2) Σz i=1 ) Express the moment generating function My(t) of the random variable Y in terms…

A:

Q: What is the population of interest in this situation? How many samples were described?

A: Answer:- The population of interest in this situation is customer satisfaction surveys for an…

Q: oretical framework from engineering sciences, the researcher believes that the physical set up of…

A: No of people involved as participants for data analysis 6 physicians 10 nurses   Nursing…

Q: Lecturers at a university intend to see the effect of stress relief strategies such as deep…

A: Given that: Cohort 1: n1=17x¯1=61s1=17 Cohort 2: n2=11x¯2=67s2=19