A students takes a 5 – question, multiple-choice exam with four choices for each question and guesses on each question.  Find the probability of guessing exactly 2 out of 5 correctly?

Q: Blood alcohol concentrations of drivers involved in fatal crashes and then given jail sentences are…

A: arrange data in accending order :  0.11,0.13,0.14,0.16,0.16,0.16,0.18,0.18,0.23,0.23,0.27,0.30…

Q: Twenty members of a health club who jog were asked how many miles they jog per week. The responses…

A: Data given  10,13,4,9,11,23,23,31,15,5,6,26,41,23,17,12,23,33,16,16

Q: Your team members were interested in (a) how students were connecting with their professors and…

A: 1) Test whether there a correlational relationship between the average amount of personal…

Q: Use a 0.05 significance level to test the claim that there is a difference between the actual and…

A: T test  is the type of parametric test. It follows the assumption of normal distribution. It compare…

Q: Participants were enrolled in a health-coaching program for eight weeks to try to improve physical…

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

Q: The frequencies (not probabilities) of the students enrolled in a university course by class year…

A: Data given   Fresh Soph Jun Sen Total Stem 97 50 22 9 178 Lib Arts 298 172 84 60 614 Bus…

Q: A consumer products testing group is evaluating two competing brands of tires, Brand 1 and Brand 2.…

A: The given data shows the amount of tread wear is recorded.

Q: Here is the data and scenario for the above questions:  An ornithologist is studying the role of…

A: Given the daily visit count data for each lilac color bush is summarized as   White Pink Purple…

Q: Let x be the number of different research programs, and let y be the mean number of patents per…

A: e) r ≈ −0.9542. The coefficient of determination r2: r^2=(-0.9542)^2=0.9105 The percentage of the…

Q: Select all of the assumptions required when performing a hypothesis test for a mean. There may be…

A: Given that We have to write the assumptions for the hypothesis testing of the mean

Q: Suppose you are deciding who to promote, Alice, Bob or John and you have rated them according to…

A: As per our company guidelines we are supposed to answer only first question. Kindly repost other…

Q: Identify the type of test of hypothesis to be performed by Mr Ed Fajardo during enrolment period if…

A: Solution: First we will discuss the non directional and directional test.  Non directional test:  If…

Q: Which of th following measure is different from the others? Mean Mode Range Median

A: given data 4 measures are given : mean,median,mode,range  we have to find which one is different…

Q: P(-1.08 ≤ z ≤ 0) =_ O 35.77% O 35.99% O 36.21% O 46.86%

A: we have to find out the probability of the given data standard normal curve,  X~N(0,1)

Q: In an epidemic, the probability of having S|D is 0.2 and P(D) = 0.1. P(S|D') = 0.04 and P (D') =…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only…

Q: The table below lists the numbers of audience impressions (in hundreds of millions) listening to…

A: Correlation is the measure of association between the two numerical variable. There are two types of…

Q: The heights of adult men in America are normally distributed, with a mean of 69.3 inches and a…

A: GIVEN DATA,  normal distributionheight of adult men μ=69.3σ=2.62height of adult women μ=64.1σ=2.55

Q: a large department store, the average number of years of service was 13.5 years with a standard…

A: given data, μ=13.5σ=6.2 If an employee is picked at random, what is the probability that the…

Q: 17)When testing a hypothesis about the population mean, if the population standard deviation is not…

A: GivenTesting a hypothesis about the population mean and the population standard deviation is  not…

Q: In a class of 50 students of Mr Ramos in the subject Calculus, the result of their quiz shows that…

A: given data N = 50μ= 78σ= 6.58carlos : 82Julia : 75how many students did carlos surpassed?n(x<82)…

Q: Omitting a relevant variable(s) from a model dangerous than including an irrelevant variable(s). Do…

A: The ordinary least squares regression gives unbiased estimates with smallest variance of all…

Q: Someone flips a coin 12 times to decide whether or not the coin is "fair", i.e., if heads and tails…

A:

Q: Medians 11.9% 11.5 88 5.2 Use a 2x2 contingency table for questions 1-3. Use the median to divide…

A: Given information: State Poverty% GunDeaths H.S.Grad's Unemployment New Jersey 6.80% 5.7 91.8…

Q: A sociologist is interested in the relation between x = number of job changes and y = annual salary…

A:

Q: The data represent the results for a test for a certain disease. Assume one individual from the…

A: yes no total positive 134 36 170 negative 10 120 130 total 144 156 300

Q: Assume that the random variable X is normally distributed, with mean p1 = 70 and standard deviation…

A: Given information Population mean μ=70, standard deviations σ=12  X~N(μ=70, σ=12) P(X< 85)=?

Q: Mr. Watson gave his students a biology test last week. Here are the test scores for each of the…

A: The data shows the test scores.

Q: A sociologist is interested in the relation between x = number of job changes and y = annual salary…

A: Given that By using excel regression  excel > data > data analysis > regression >  input…

Q: The average salary for American college graduates is $40,700. You suspect that the average is…

A: Given,sample size(n)=54sample mean(x¯)=$46,049standard deviation(s)=$11,980and α=0.05

Q: Population, sample, variabels Describe your population, sample, and variables here. Population:…

A: Given that We have to describe Population Sample  Variables

Q: For each of the following processes, identify it using the notation SARIMA(p, d, q) x (P, D, Q)s.…

A: The objective is to identify the given process using the notation SARIMA(p, d, q)×(P, D, Q) s. Given…

Q: Problem 1 Consider two random samples X₁, XX-N(,,) and Y., -N(,, 80) which are independent of each…

A: Given Information: Consider two samples X1, X2, .....Xn~Nμx, σ2 and Y1, Y2, .....Yn~Nμy, 8σ2 which…

Q: VEK. Write the word or phrase that best completes each statement or answers the question. Use the…

A: First we started the hypothesis for the above situation. H0: The tutoring has no effect on the math…

Q: Bighorn sheep are beautiful wild animals found throughout the western United States. Let x be the…

A: Given information: Σx = 15; Σy = 87.1; Σx2 = 55; Σy2 = 1554.45; Σxy = 274, n=5 b) equation of the…

Q: Suppose that you conduct a repeated-measures ANOVA with more than two treatment conditions, and the…

A: In the Anova, the null hypothesis is rejected then post hoc test is used. It used to define which…

Q: ) O Consider a standard 52-card deck from which one card is randomly selected and not replaced.…

A: a) From a standard deck of 52 card a card is selected and not returned.

Q: 1.SOLVE USING SIMPLEX METHOD Minimize - 5x₁ +4x2+x3 subject to x₁ + x₂ x2 3x3 ≤ 8 2x2 - 2x3 ≤7…

A:

Q: the first-order linear regression model, the population parameters of the y-intercept and the slope…

A:

Q: Each box of Healthy Crunch breakfast cereal contains a coupon entitling you to a free package of…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: 20. The data below shows the number of domestic flight passengers (in millions) in 2018 for each of…

A: 20. The data shows the number of domestic flight passengers of top ten U.S. carriers.

Q: probability that you visit Safeway today during this 3 hour period and find: (Poisson distribution).…

A: Here given, A study of the checkout lines at the Safeway Supermarket in the South Strand area…

Q: Imagine you want to estimate a AR(1) model for price, denoted P. using solver. Consider the…

A: Given the data as   A B C D E F G H 1 P P(t-1) Predicted P Error Error^2 SSE     2 $4.00…

Q: Given the linear correlation coefficient r and the sample size n, determine the critical values of r…

A: Given  r=0.221, n=90 Level of significance ɑ=0.05

Q: State the null and alternative hypotheses in the test for the effect of an interaction between row…

A: The data shows the self-esteem measures for subject and target.

Q: The first four moments of a distribution about the arbitrary point 4 åre 1, 4, 10 and 45…

A: We have given that, The first four moments of a distribution about the arbitrary point 4 are 1, 4,…

Q: 6 Answer Question 27-30 based on the information given below: 14.3113 +0.5711X r² = ( ) se = ( )…

A: Note: According to Bartleby guidelines expert solve only one question and maximum three subpart of…

Q: Identify the variable/symbol. 1. "r" represents the sample correlation 2. 1172 11 represents the…

A: Here we have given the symbols We have to identify the name that represents the given symbol.

Q: A farmer grows carrots, potatoes, and green beans to sell at the market. 40% of his crop is carrots,…

A:

Q: Use the data values in the table below to calculate the correlation between the variables x and y.…

A: Here we have to find the correlation coefficient between X and Y It is denoted by r

Q: random sample of subjects with high lead levels in their blood. The statistics are summarized below.…

A: Given that  Low lead Level : n=23 x= 89.90476 s= 11.988352 Higher Lead Level: n= 76 x= 89.89462 s=…