2. A student answers a multiple-choice question either by knowing the answer or by guessing. The probability that the student knows the answer is 40%. If the student guesses, he has 5 possi- ble choices in the multiple-choice question. What is the probability that the student answers the question correctly?

Q: Using The Chi-Square Distribution Table, =σ2225, =α0.05, =n25, and a left-tailed test, find the…

A:

Q: Can you help me please: Suppose we have 10 biased coins such that the probability of showing head…

A: Sample size (n)=10Probability of showing head (p)=1/3Let X denotes the number of heads obtainedWe…

Q: Number of Jobs A sociologist found that in a sample of 50 retired men, the average number of jobs…

A: From the given information,sample size, n= 50Sample average, x-bar= 6.9Population standard…

Q: Age-related Macular Degeneration (AMD) is a common eye condition leading to vision loss. It causes…

A: Given age at diagnosis for 20 patients with early-onset AMD as follows PatientAge at…

Q: Average Family Size The average family size was reported as 3.18. A random sample of families in a…

A: From the provided information,Sample size (n) = 21

Q: We draw a card at random from a deck of 52 cards. Let A: get a club, B: draw a face and C: draw a…

A: Let the events,     : getting a club card,     : drawing a face card, and     : drawing a red…

Q: There are 1000 products, and 200 of them are defective. Now randomly select 100 of 1000 products,…

A: 1000 products and 200 product 100 of 1000 products We have to find the probability that 50 out of…

Q: An auditor randomly chooses 5 tax returns from a list that consists of 15 tax returns. In the list,…

A:

Q: Johns Hopkins University reports Covid-19 statistics daily for every US state and many countries in…

A: Given that Johns Hopkins University reports Covid-19 statistics daily for every US state and many…

Q: O 0.25 O something else 0.125 0.5 .2, and P(An B) = .25. Calculate P(BIA).

A: We are going to find the value of P(B|A) by the use of the following formula

Q: 4. An airline offers two types of economic classes (a and b) on its flights and a class Executive In…

A: There are 2 Economic classes A and B . Probability of choosing these classes are :P(A)=P(B)= 1/2Let…

Q: Suppose that the time between arrivals of customers at a bank during the noon-to-1 p.m. hour has a…

A: Let X be the time between arrivals of customers at a bank during the noon-to-1 p.m hour.Given that X…

Q: Q2. A software company is considering the format of its login passwords. Which of the following…

A: Given that a software company is considering the format of its login passwords.

Q: 1. If the new supplier does provide spools of .20-mm solid OFE copper wire that average 50 inches…

A: The basic concept needed to approach this problem is understanding and applying the principles of…

Q: product is composed of four parts. In order for the product to function properly in a given…

A: Given information-We have given that product is composed of four parts.We have given the…

Q: Hospital Noise Levels For a sample of 8 operating rooms taken in a hospital study, the mean noise…

A:

Q: The percentage of wins for a basketball team going into the playoffs was 84.6%. Round the 84.6 to 80…

A: The random sample of size, The probability of success is 84.6% (i.e. ).

Q: (d) Write down the equation of the fitted multiple regression model. (e) Test if the regression is…

A: To fit a multiple regression model, we want to find the equation of the…

Q: An urn contains four red tokens and three blue tokens. Two tokens are drawn successively and without…

A: Urn contain 7 tokens=4 red+3 blue token

Q: X Sixty percent of all vehicles examined at a certain emissions inspection station pass the…

A: Given,Let the Probability that a random vechile passes is 60% ie, P = 0.60let, the random variable…

Q: if n(E1 and E2)=4 and n(e1)=12 then p(E2|E1)=

A: n(E1 and E2)=4 and n(E1)=12

Q: Suppose you flip a fair coin four time. (A) What is the probability you will get all four heads? (B)…

A: A)A fair coin is tossed four times.

Q: The percentage of mechanical-, civil-, aeronautical-, industrial-, and chemical-engineer- ing…

A:

Q: High School Dropouts Approximately 12.3% of American high school students drop out of school before…

A: From the provided information,Approximately 12.3% of American high school students drop out of…

Q: A woman is pregnant with twin boys. The probability of identical twins is one out of three births.…

A: Women is pregnant with twin boys ( given two boys ) P(identical twins) = 1/3 P( not identical twins…

Q: (QUESTS) There are two boxes with marbles. Box 1 contains 5 black and 15 white marbles. Box 2…

A: There are two boxes Box1 B1 and Box2 B2 Box 1 contain total 20 marbles : 5 black and 15 white.Box 2…

Q: Question A random variable X has probability density function 4 flize. for 0 ≤ x ≤ 2, for 2 < x≤ 3,…

A:

Q: Age-related Macular Degeneration (AMD) is a common eye condition leading to vision loss. It causes…

A: Given a random sample of 20 people with early-onset AMD gave the following data on age at diagnosis,…

Q: If E and F are two disjoint events with P(E) = 0.26 and P(F) = 0.47, what is P(E ∪ F)? (Enter answer…

A: Given,P(E) = 0.26 and P(F) = 0.47Using formula, ;for A and B are two disjoint events.

Q: 1. For a normal population with known population standard deviation o, what is the confidence level…

A: 100(1-α)% CI for μ is X¯−1.7×σ/n,X¯+1.7×σ/n

Q: You are taking a multiple-choice test that has 33 questions. Each of the questions has 5 choices,…

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

Q: 1. You are given the following two series on Bitcoin and the SP500. Bitcoin 39 50 21 55 40 SP500 100…

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

Q: 3. A die will be rolled until the first ace comes out. Let X be the number of rolls till the first…

A: X be the number of rolls till the first ace comes out.

Q: Simplified stock market Suppose there are three kinds of days: GOOD, GREAT, and ROTTEN. The…

A: Consider the provided data: Type of DayFrequencyChange in ValueGood60%+2Great10%+5Rotten30%-4

Q: For a normal population with a mean of µ = 80 and a standard deviation of σ = 10, what is the…

A: Mean()=80standard deviation()=10

Q: An engineer counts 400 veh/hr at a specific highway location. Assuming that the vehicles arrive…

A: Probability is defined as the sum of favorable ways of an event divided by the total number of…

Q: 4) A pair of fair dice are tossed until either an 8 or a 10 appears. (a) What is probability that…

A: When two dice are tossed, the sum is 8 for 5 combinations of= {(6, 2), (2, 6), (5, 3), (3, 5), (4,…

Q: given flight, engines fail independently, with probability P. Would you be safer in an airplane with…

A:

Q: Let E and F be two events in S with P(E) = 0.54, P(F) = 0.57, and P(E ∩ F) = 0.21. Find P(EC ∩ F).…

A: P(E) =0.54P(F) =0.57=0.21

Q: A lottery game is played in many places and requires $1 per ticket to play. To win the jackpot, a…

A: Total Number = 36Number to be choosen = 8

Q: A sign on the pumps at a gas station encourages customers to have their oil checked, and claims that…

A: Binomial distribution :The binomial distribution is the discrete probability distribution that gives…

Q: In a national basketball association, the top free-throw shooters usually have probability of about…

A: Note:Hi there! Thank you, for posting the question. As the sub parts are answered correctly, we have…

Q: The vast majority of European vehicles sold in the world (BMW, Audi, Mercedes- Benz, etc...) receive…

A: ZF AG supplied 69% of transmissions to European vehicles, thenp=P(ZF)=0.69Continental AG supplied…

Q: If S = {a,b,c} with P(a) = P(b) and P(c) = 0.24, find P(a). (Enter answer as a decimal with at least…

A: Suppose,  be the sample space.and &amp;

Q: Selecting Marbles A bag contains 5 red marbles, 6 white marbles, and 9 blue marbles. Randomly choose…

A: From the provided information,A bag contains 5 red marbles, 6 white marbles, and 9 blue…

Q: A cyber-security officer is investigating a cyber-crime case. The officer considers three hackers as…

A: A cyber-security officer is investigating a cyber-crime case. The officer considers three hackers as…

Q: A football team consists of 19 each freshmen and sophomores, 15 juniors, and 18 seniors. Four…

A: 19 freshmen, 19 sophomores, 15 juniors, 18 seniorsTotal=71

Q: Average Family Size The average family size was reported as 3.18. A random sample of families in a…

A: Population mean=3.18

Q: Thanks to the invention of a new device, the probability of detecting cancer in an affected person…

A: According to the given information,The probability of detecting cancer in an affected person is,…

Q: iven that X~Normal(μ = 1000, o = 7), what is the (μ-c≤x≤μ+c)=99%? O-12 O-14 O-16 0-18 O-20

A: As per policy we hsved one question for You.  If you want remaining please mention and repost…