The life of a cellphone battery has a lognormal distribution with μ = 4.5 and o= 0.4 (the mean and standard deviation of Inx). What proportion of battery lifetime values are at least 125 hours?

Q: Suppose a ten-year, $1,000 bond with an 8.4% coupon rate and semiannual coupons is trading for…

A: Please note that as per our guidelines if multiple questions are posted by the student we can answer…

Q: A coin is launched 4 times. What is the probability that Get out "face 2 times?

A: A coin is tossed 4 times.The objective is to find the probability of getting face (heads) 2 times:

Q: Find the probability that a randomly selected member either does dancing or music. b) Find whether…

A: An aesthetic club has 100 members. Out of them 40 do dancing, 45 do music and 24 do drama. 15 do…

Q: Internet Viewing A researcher wishes to estimate the average number of minutes per day a person…

A: Assume that  is the population average number of minutes per day a person spends on the Internet.

Q: 7 different gifts are to be given among 10 kiols. How many distinct results are cible if no kid 18…

A: 7 different gifts among 10 kids We have to find number of distinct results if no kid receive more…

Q: The trade volume of a stock is the number of shares traded on a given day. A random sample of…

A:

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: In a product development program, 35 new units of product AAX12 are prototyped and tested. Ore…

A: n=sample size=2, Population size=N=35, M=total number of defective=5

Q: In a science fair​ project, Emily conducted an experiment in which she tested professional touch…

A: Given information ,Sample size , n = 331Number of times the touch therapists were correct , X =…

Q: The joint probability density function of a bivariate random variable (X, Y) is 456 [k(x+y), 0, £x…

A: f(x,y)=k(x+y); 0<x<2, 0<y<2

Q: According to the figure, which one is false about a normally-distributed random variable with mean M…

A: It is required to identify the statement that is false.

Q: High blood pressure is a known risk factor for heart attack. A research team investigating ways of…

A: From the information, given that Let X1 denotes the age in years as independent variable.Let X2…

Q: Listed below are body temperatures from five different subjects measured at 8 AM and again at 12 AM.…

A: The body temperatures from five different subjects measured at 8 AM and again at 12 AM is listed…

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: For a certain delivery business, the length of time for a delivery to arrive is exponentially…

A: Let X be the time of delivery to arrive in a certain delivery business.X is exponentially…

Q: The function below is independent. (A) True B) False = { // 12 0 f(x, y) = 49 ≤ x ≤ 51,2 ≤ y ≤ 8…

A: f(x,y)=112; 49≤x≤51, 2≤y≤8

Q: Phoenix Head - 0 tears Phoenix Tail - 3 Tears Phoenix Fire - 12 Tears How many (A) Phoenix coin…

A: A) To find the number of different combinations possible with 15 Phoenix coin tosses, we can use the…

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: We are given the following bivariate density function : ( 1⁄² − 2) + - f(x, y): = y +x; where 0<x< 1…

A:

Q: A coin that has a probability p of appearing head is flipped in succession until two of the last…

A: A coin that has a probability P of appearing head is flipped in succession until two of the last…

Q: Let x be a random n-vector with mean mu and positive definite variancecovariance matrix Sigma.…

A: Let's break down the problem into two parts(a) To show that Sigma(-1/2) (x-mu) has a mean of 0 and a…

Q: and Knee Clinic knows that their expected monthly revenue from pa level of advertising. They hire an…

A: A)E = 100+ 20(ADVERT) B)advert = 2STD DEV = 30, revenue = 140x=110P ( X &gt;  110.00    ) = P(…

Q: Kayla randomly chooses 5 dresses from a thrift shop containing 15 dresses. In this collection of 15…

A: n=5, 15 dresses, 9 have sleeves and 6 have no sleeves.

Q: It is claimed that 60% of all students at a college still need to take another math class. Baseed on…

A: As per the Bartleby guildlines we have to solve first three subparts and rest can be reposted.Sample…

Q: If E and F are two disjoint events with P(E) = 0.21 and P(F) = 0.23, what is P(E ∪ FC)? (Enter…

A: Given ,P(E) = 0.21P(F) = 0.23 We have to find , Using formulas,And,

Q: Assume that a basketball game final scores are normally distributed with a mean of 75 and a standard…

A: Mean = 75Standard deviation = 8

Q: The half-life of a radioactive compound is 26 weeks. If a 1080 g sample is left to decay for one…

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

Q: At a local manufacturing plant, employees must complete new machine setups within 30 minutes. New…

A:

Q: A standard piano keyboard has 88 different keys. Find the probability that a cat, jumping on 5 keys…

A: There are 88 different keys on a standard piano keyboard, and repetition is allowed, which means the…

Q: 2. If quiz grades are normally distributed with a mean of 80 and a standard deviation of 6.0, what…

A: 2) Given,Mean, μ = 80Standard deviation, σ = 6.0Let X be a random variable represents the quiz…

Q: 10. d) Find CDF F(x) If t < 0, F(t) = P(x<+) = $₁0 dx = 0 st

A: The probability density function of Xf(x)=4/5x3. 0≤x&lt;1        4/5 e1-x.  x&gt;1 We have to…

Q: A company manufactures transistors in four factories producing 10%, 30%, 40% and 20% of the parts…

A: According to the given information ,P(factory 1) = P(f1) =  0.10P(factory 2) = P(f2) = 0.30P(factory…

Q: 2. A privately owned business operates both a drive-in and a walk-in facility. On a random day, the…

A:

Q: Question 1 Suppose P(E)= 0.22, P(F) = 0.20, and P(FE) = 0.12. What is P(EC | F)? (Enter answer as a…

A: P(E) =0.22P(F) =0.200.12

Q: The graph illustrates the distribution of test scores taken by College Algebra students. The maximum…

A: Here the given graph is :- The above graph illustrates the distribution of test scores taken by…

Q: A plane is missing and is presumed to have equal probability of going down in any of three regions.…

A:

Q: A test was given to a group of students. The grades and gender are summarized below B C 20 5 Female…

A: We have given that a test was given to a group of students.A summary of grades and gender is given…

Q: Can you help me please: Fischer and Spassky play a chess match in which the first player to win a…

A: Consider the given Information:Successive draws = 10Each game is won by Fischer with probability…

Q: event that gas is pre-purchased event that a GPS is rented with P(A) = 0.20 and P(B) = 0.65.…

A: A rental car company offers two options when a car is rented. A renter can choose to pre-purchase…

Q: the other game. The MIT team will receive 2 points for a win, 1 for a tie. and 0 for a loss. Find…

A:

Q: In order to determine the average weight of carry-on luggage by passengers in airplanes, a sample of…

A: sample size(n)=60Mean()=23.5standard deviation()=4.25

Q: A machine has four components, A, B, C, and D, set up in such a manner that all four parts must work…

A: Given, a machine has four components, A, B, C, and D, set up in such a manner that all four parts…

Q: 3. If P(AuB)=0.8, P(AnB')=0.3, and P(BnA')=0.2, determine following probabilities. 3-A. P(AUB)' 3-B.…

A: Given:P(A U B) = 0.8 (Probability of the union of A and B)P(A ∩ B') = 0.3 (Probability of the…

Q: Say we are given a table representing the bivariate probability mass function f(X,Y) Find P(Y = 2|X…

A: Y=1Y=2Y=3X=101/83/8X=2001/4X=31/400

Q: Whenever Hank a bag of marbles, he grabs a handful at random . He has seen a a bag of two red…

A: a bag  contain oftwo red( R) marbles, two green( G) marbles, four white (W)marbles, and two…

Q: Consider the random experiment of running two of the. Find the probability of the following events:…

A: The number of dice rolled is 2.Hey there! Thank you for posting the question. Since your question…

Q: X 1 1.5 1.5 2.5 3 y 1 2 3 4 5 fxy(x, y) 1/4 1/8 1/4 1/4 1/8 Determine the marginal probability…

A: We have given the following joint distribution of X and Y xyfXY(x,y)111/41.521/81.531/42.541/4351/8

Q: Suppose your favorite coffee machine offers 13 ounce cups of coffee. The actual amount of coffee put…

A: Let X be the amount of coffee put in the cup by the machine.Given X follows a normal distribution…

Q: To generate leads for new business, Gustin Investment Services offers free financial planning…

A: Each seminar costs Gustin = $3900The average first-year commission for each new account =…

Q: (a) n = 6, p = 0.2 Pr(X= 2) = ||

A: Given that, n=6 and p=0.2