The waiting line at a popular bakery shop can be quite long. Suppose that the waiting time in minutes has probability density function f(x) = 0,4 e 0.4x Calculate the mean and variance for the random variable: E(X) = V(X) =

Q: A lot consists of 10 good articles, 4 with minor defects and 2 with major defects. Two articles are ...

A:

Q: Let U%3D {а, с, е, һ, т, о, р, s, t, и, у, 0, 1, -} А 3D {с, һ, о, р, s, и, e, y} B = {s, e, t} II В...

A: For the given data Find the given

Q: The probability of a woman developing breast cancer over a lifetime is about 1/9. - What is the prob...

A: given that n =10 ,p=1/9 Find  What is the probability that exactly 5 women of 10 will develop breast...

Q: A poll is given, showing 70% are in favor of a new building project. If 8 people are chosen at rand...

A: A poll is given, showing 70% are in favor of a new building project.   If 8 people are chosen at ran...

Q: A worldwide organization of academics claims that the mean IQ score of its members is 118, with a st...

A: Let X be the random variable from normal distribution with mean (μ) = 118, standard deviation (σ) =1...

Q: 7. to the left of z = 2.78 8. at most z 1.5

A: To Determine the area under the normal curve:  

Q: Class 10R sat a test. The mean mark for the class was 70%. There are 30 students in class 10R, 20 of...

A: Given: Total student (n)=30Number of boys (nb)=20Mean (μ)=70%Mean for boys (μb)=62%

Q: .E(y) = -1.5 E(x) = 15. y = (0.1)x – 3 correct Error

A: Given that, E(y)= -1.5 And E(x)= 15

Q: The space of integrable random variable is L'. Recall from Definition L.27 that a random variable de...

A: The space integrable random variable is L' The random variable defined i=on a probability space (Ω,F...

Q: Nolan surveyed 7 teachers from each academic department at school. Each department has an equal numb...

A: Given: 7 teachers from each academic department surveyed Each department has an equal number of teac...

Q: Find the area under the standard normal distribution curve.

A: Here use standard normal distribution table for probability from z 

Q: Suppose there is a set of 8 candies. In how many ways, 4 candies can be selected from this set (with...

A: NOTE-AS PER POLICY I HAVE CALCULATED FIRST MAIN QUESTION ONLY PLZ RESUBMIT OTHER QUESTION AGAIN Here...

Q: 3. A bag contains 8 red, 6 blue and 4 green marbles. In how many ways can these drawn be made: a. 6 ...

A: Given 8-red 6 -blue 4 - green 18 - total Find the given problems in (a) (b) (c) and (d)

Q: A haulage company operates 3 depots – London, Sheffield and Brighton. The vehicles operated by the c...

A: Given that, a haulage company operates 3 depots – London, Sheffield and Brighton. The vehicles opera...

Q: In each problem, please indicate what kind of permutations is involved, then solve. Show ypur comple...

A: 1)Given Word is "GOOGLE"No.of letters in the word = 6No.of times letter "G" repeated = 2No.of times ...

Q: Find P(saving patient)

A: here as per guidelines i have calculated first main question kindly repost remaining with note i nee...

Q: The table below shows the probability distribution of student ages in a high school with 1500 studen...

A:

Q: Construct a curve then shade the region corresponding to the area. 1. P(Z > -1.53) 2. P(Z < 2.89) 3....

A:

Q: f(x) = ke 2, x > 0 k O correct O Error

A:

Q: In an examination 30% of the students have failed in Mathematics, 20% of the students have failed in...

A: Solution is given:

Q: time. (a) Suppose a mechanic begins to diagnose the problem by checking the spark plugs first and fi...

A:

Q: A manufacturer claims that the average lifetime of his new 60-watt light bulb exceeds 1200 hours, wh...

A: Given that, A manufacturer claims that the average lifetime of his new 60-watt light bulb exceeds 12...

Q: probability that the next customer will pay with a credit card as a decimal to the nearest hundredth...

A: Here Given Last week 102 customers paid cash, 3 customers used a debit card,  8 customers used a cre...

Q: 23. It is known that only 60% of a defected computer can be repaired. A sample of 15 computers is se...

A: Let X be the random variable from binomial distribution with probability (p) = 60% = 0.60 and sample...

Q: Prove or give a counterexample to each of the following statements: (a) If A and B2 are independent...

A: Given Statement  If A and B2 are independent then P(A|B1 ∩ B2) = P(A|B1) (where P(B1 ∩ B2) &gt; 0).

Q: Allen Shoemaker derived a distribution of human body temperatures with a distinct mound shape.t Supp...

A: Given: Mean= 98.6 Standard Deviation = 0.8

Q: You draw two cards from a well-shuffled deck of 52 cards, forming a 2-card hand. 1. What is the prob...

A: Given: n(ace) = 4 n(non ace) = 48 n(total) = 52 n(drawn) = 2

Q: A candy dish contains six brown and four red M&Ms. A child selects four M&Ms without checking the co...

A:

Q: Your answer B'UC Your answer (A U B) N C

A:

Q: Problem 2: Strategic Defense There are N sites that need protection (number them 1 to N). Someone is...

A: Given Information:  Consider the N sites that need protection(number them 1 to N). The choice of qi ...

Q: function is given by: ´ay§ fy) = {ya+1 (0, if y > yo elsewhere ii) Show whether or not that the vari...

A: Solution

Q: the redundancy? What is the MTTF? What is the reliability over 100 A parking lot has 10 floodlights ...

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

Q: 4. The systolic blood pressure reading for a person varies throughout the day. Assume that for a cer...

A: The normal distribution is used in statistics to calculate probabilities.

Q: 3. Find the number of words, with or without meane O* ân be formed A. PROBLEM SOLVING: Find the numb...

A: Solution

Q: Describe data in terms of variability, association, and relative standing.

A: Terms with example Variability Association Relative standing

Q: Say the correlation coefficient between the heights of husbands and wives is 0.70 and the mean male ...

A: Coefficient correlation : The correlation may be a applied math live of the strength of the associat...

Q: B. Fruity Combination – In the second round, Shawn has to correctly guess the combination of four fr...

A:

Q: Suppose you have a jar with 20 marbles. 14 marbles are red, and 6 marbles are blue. You draw marble...

A: Given,no.of red marbles=14no.of blue marbles=6Total no.of marbles=20

Q: Rica is either the winner or the runner-up?

A: Here use basic probability 

Q: In a survey of 500 students in a university, 200 are enrolled in Psych 101, 180 are enrolled in Span...

A: Given that, In a survey of 500 students in a university, 200 are enrolled in Psych 101, 180 are enro...

Q: III. The spinner below is divided into eight sections. Let X be the score where the arrow will stop ...

A: For the given data find (a) probabilty of landing on 1,2,3, and 4 ( b ) construct probabilty distrib...

Q: A French deck of 52 cards consists of four suits (clubs, diamonds, hearts, and spades) of 13 ranks e...

A:

Q: In how many ways may Ana select 5 of her 10 friends to attend her birthday party? In how many ways i...

A: Here use combination 

Q: Eight people are seated at a dinner table at a political function. How many ways can they sit if the...

A: NOTE-AS PER POLICY I HAVE CALCULATED FIRST PART PLZ RESUBMIT OTHER PARTS AGAIN   Here For Round tabl...

Q: with an unknown parameter 0. Let X1,..., X, be a random sample from this distribution. Find the MLE ...

A:

Q: Deal 10 cards from a standard deck (52 cards). What is the probability that the 6th card is a queen,...

A:

Q: Three runners in a race A, B, C. If the probability of winning is 1. It is twice the probability of ...

A: Probability : The term "probability" merely refers to the probability of one thing occurring. we are...

Q: A box of jerseys for a pick-up game of basketball contains 10 extra-large jerseys, 7 large jerseys, ...

A: The number of favorable event divided by the total number of observation gives the probability of th...

Q: Suppose the decision rule is "Reject Ho if the mean score of the sampled BP graduates is greater tha...

A: Hypothesis testing : Hypothesis testing is a type of statistical inference that uses sample data to ...

Q: Diego is an employee of a distinguished brands for phones. He is always assigned to check the qualit...

A: Here use hypergeometric distribution because without replacement model