A2. A study of test results at different schools shows that as the student-to-teacher ratio increases the average test result tends to decrease, although the relationship is quite weak. Which of the following is plausible value for the correlation between student-to- teacher ratio and average test results? B -0.3 A -0.9 C -0.01 D 0.3 E 0.9

Q: In the Introduction to Impossibility module, 4/5 of students pass the exam. Of those who pass the…

A: Introduction: Denote A as the event that a student passes, so that Aꞌ is the event that the student…

Q: Find the studentized, aka standardized residual for the following example. There are 9 explanatory…

A: Given::-- There are 9 explanatory variables and 46 observations. The SSE=115. The leverage for the…

Q: Q5 If P.d∙f of x is given by e/5x f(x)= } e 01) re loce

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

Q: Q.2.Q. Define "sample space Write the sample space g throwing experiment g (( T The excut you don…

A: The experiment consists of throwing two dice. We have to obtain the sample space for this…

Q: 6. Let X be the continuous random variable with the probability density function f(x) = {(2x+5)/44…

A:

Q: A bookstore is planning to open a new store at Morabadi ground near Ranchi University that houses…

A: For answering this question we need to make some assumptions as follows :  1. The size of a store…

Q: the data in the table below, which shows the employment status of individuals in a particular town…

A: given data, here the data table shows  the employment status of individuals in a particular town by…

Q: I used the permutations formula to determine the number of ways the manager of a baseball team can…

A: Combination : Using combination set of n distinct items r number of way selected without…

Q: what is P(b)

A: Solution:

Q: A TV station is going to air a movie marathon with 9 movies. It will consist of 5 science fiction…

A: From given  5 science friction 4 horror total 9 movies

Q: Dystopia county has three bridges. In the next year, the Elder bridge has a 11% chance of collapse,…

A: let  P(A)=Probability that Elder bridge has a chance of collapse=0.19 so, P(A)=1-0.11=0.89…

Q: A machine generates rectangular tiles with randomly varying length (L) and width (W). Let the length…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: Express the following length of time (t) in the simple interest formula. a) 18 months b) 14 weeks c)…

A: The simple interest formula is : SI=p×i×tWherep is the principal amount  i  is the annual interest…

Q: There are 32 students in your tutorial group but the university has timetabled the class in a room…

A: Suppose a random variable X, defines that the number of students, who attend the class.

Q: inclusive, will result in (b) less than 90 heads, (c) less than 85 or more than 115 heads, and (d)…

A: Given::- probability that on a true-false examination a student can guess correctly the answers.

Q: The bowler bowls three balls and is aiming to hit the "leg stump" (the stick on the Right). (Ball…

A: Introduction: We are given a bowling stat of 3 bowlers. The target is the leg stump. We need to…

Q: Four balls are randomly selected, without replacement, from a bag that contains 10 balls numbered…

A: Given::- Four balls are randomly selected, without replacement, from a bag that contains 10 balls…

Q: er Cycle”, you need to input a five-digit code to release the bike. The code is generated at random…

A: The numbers of the code are : 1,2,3 Arrangement of a Five - Digit code

Q: Buford has generously offered to assist the Fireside Girls troop 46231 in their annual cheese sale.…

A: Given::- Buford has generously offered to assist the Fireside Girls troop 46231 in their annual…

Q: 7. If X and Y are independent random variables drawn from the standard uniform distribution, on the…

A: Given  X, Y ~ U(0,1)  X and Y are independent.

Q: The following table lists the number of unicyclists in Corvallis, OR. by age group. Age Group…

A: From the given table,Total frequency=292

Q: 6.86 If 10% of the rivets produced by a machine are defective, what is the probability that out of 5…

A: 6.86. Here, n = 5 and p = 0.10. Note that, for the given scenario, there are only two possible…

Q: Each exam question posted to the study website Begg.com has a probability 0.6 of being answered…

A: Here we assume that both the events are mutually independent. Hence Probability that student who…

Q: Question 1, 44 of my 55 neighbors don't like me. What is the probability that in a random sample of…

A: given data 44 of my 55 neighbour don't like me. select sample of 5. P(exacly 4 of selected 5 don't…

Q: Which scatterplot shows the strongest association? C Which scatterplot shows the weakest…

A:

Q: will be drawn and (b) 8 red and 2 yellow 5 Find the probability of not getting a 1, 2, or 3 in four…

A: Given::- the probability of not getting a 1, 2, or 3 in four tosses of a fair die.

Q: Suppose that X is a random variable which takes only two values: -2 and +2, and that Y = aX + b…

A:

Q: A coin is tossed three times. An outcome is represented by a string of the sort HTT (meaning a head…

A: here, coin is tossed three times. so, sample space S={HHH,HTH,HHT,HTT,THT,THH,TTT,TTH} n(s)=8 where…

Q: Nine cards are marked with the numbers 1, 2, 3, 4, 5, 6, 7, 8, and 9, then shuffled, and three cards…

A: nine cards are marked with numbers : {1,2,3,4,5,6,7,8,9} select 3 cards at random. (A) no. of ways…

Q: probability that a 80-year-old female in the U.S. will die within one year is about 0.048711. An…

A: given data, The probability that a 80-year-old female in the U.S. will die within one year is about…

Q: 11. One box contains 3 red balls and 5 white balls, and a second box contains 2 red balls and 3…

A: Givenfirst box containsNo.of red balls = 3No.of white balls =5Total no.of balls = 8second box…

Q: Use the exponential distribution to determine the probability of the failure of a vacuum tube…

A:

Q: king, (b) all cards are of one suit, (c) all cards are of -85 Find the probability of at least two…

A: Given::- the probability of at least two 7's in four tosses of a pair of dice.

Q: The highway mileage (mpg) for a sample of 8 different models of a car company can be found below.…

A: here given data, 20,23,25,28,30,32,33,33   Formula : mean x¯= (sum of all data divided by total…

Q: A number cube is rolled three times. An outcome is represented by a string of the sort OEE (meaning…

A: Given 8 outcomes isOEE,EEO,OOE,OEO,EOO,OOO,EOE,EEETotal no.of outcomes=8Where,'O'=odd number'E'=Even…

Q: What is the probability that he will make at least two sales with his first three visits?

A:

Q: The table lists the number of head and neck injuries for 632 ice hockey players wearing either a…

A: Half shield(H) full shield(F) head and face injuries(A) 90 31 concussions(B) 39 44 neck…

Q: One of the wagers in the game of roulette is to place a bet that the ball will land on a black…

A: 18 black18 red2 green __________38 total balls  if balllands on black you win

Q: If the diameters of ball bearings are normally distributed with mean 0.6140 inches and standard…

A:

Q: Please answer all: a) how many outcomes are there? b) how many outcomes have both Maria and John…

A: given data  president candidate : {Jessica,Ann,Maria,Linda}vice president candidate : {John,Bob}tree…

Q: Given a coin with the probability p of landing heads, where p is unknown and we need to estimate its…

A: Given::- Given a coin with the probability p of landing heads, where p is unknown and we need to…

Q: What are the hypothesis that we need to verify to apply our analysis in M/M/1. Select all correct…

A: M/M/1 model: M/M/1 queue model is used to model single processor systems. The first letter is for…

Q: (a) If passwords must consist of eight letters followed by two digits, determine the total number of…

A:

Q: A coin is thrown 200 times. What is the probability that the article will be obtained no more than…

A: Given Probability = p = 0.5 Number of trial = n = 200

Q: From a group of 18 smokers and 23 nonsmokers, a researcher wants to randomly select 7 smokers and 7…

A: It is given that a group of 18 smokers and 23 nonsmokers.

Q: A basket contains 5 red apples and 7 yellow apples. A sample of 4 apples is drawn without…

A: here given, 5 red apples +7 yellow apples in basket. Total apples=12 4 apples is drawn without…

Q: For each of the following, list the sample space and tell whether you think the events are equally…

A: Solution-: For each of the following, list the sample space and tell whether you think the events…

Q: Weight Loss (pounds) 0 to <5 5 to <10 10 to <15 15 to 20 20 to 25 A sample of 400 people was…

A: Given frequency distribution table weight loss in pounds(x) frequency(f) 0-5 116 5-10 144…

Q: Three balls are randomly drawn from an urn that contains four white and eight red balls. (a) What…

A: Given that…

Q: I need answer with explaination

A: Given the stop loss premium πx(d) = E[(X-d)+] = 132-d3 d∈[1,2]