A can solve 80% of the problems given in Statistics book, B can solve 60%. What is the probability that at least one of them will solve a problem selected at random?

Q: 2. In a wedding, a photographer is taking a group picture of 6 people in a row. In how many ways can...

A: Here use concept of total arrangement  There are total 6 people 

Q: e. However, there were too many people so they decided to split up to 3 nearby bed and breakfasts. 4...

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Q: (a) Find EY and Var Y. (b) Find the joint distribution of X and Y. (c) Find the marginal distributio...

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Q: An article in International Journal of Electrical Power & Energy Systems "Stochastic Optimal Load Fl...

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Q: Suppose a computer company has manufacturing plants in three states. 50% of its computers are manufa...

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Q: die is rolled three times. What is the chance that--- not all the rolls show 1 spot?

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Q: - Find a 95% confidence interval for p1 - p2.

A: Here use confidence interval of difference of proportion 

Q: A card is drawn from an ordinary deck. Match the following with their probab 10 2 3 10 10 10 A diamo...

A: Given that - n (s) = 52

Q: explain How many permutation of the letters ABCDEFGHIJKLMNO contain the string GO and JIM?

A: If there were no restrictions then there are 15 letters in total. So they can arrange among themselv...

Q: A bag contains 7 white and 9 black balls. The balls are drawn in succession at random, what is the p...

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Q: In the past, it had a probability of 0.68 success in any attempt to make a call on the telephone. Ca...

A: Let X be the random variable from binomial distribution with probability of success (p)=0.68 and sam...

Q: 35. A card is drawn from a standard deck of 52 cards. What is the probability that the card drawn is...

A: Disclaimer : "Since you have asked multiple question, we will solve the one question for you. If you...

Q: Activity I. The following data show the probabilities for the number of inquiries received per day b...

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Q: If X is a continuous random variable with distribution, f(x) =+k if0sxs3 0 elsewhere Determine P(1 s...

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Q: # of tries to get a heads 5 frequency of tries 18 15 4. probability Find the probability for number ...

A: We have given that the table represents records the frequency of the number of tries to get a heads ...

Q: Among the products of the first company, defective is 10%, the second 20%, the third  25%. We bought...

A: The probability that an event occurs, is equal to ratio of number of favourable outcomes for the eve...

Q: There are 4 white, 3 black , 2 red balls in box. 3 balls are drawn at random. Find the probability t...

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Q: Printed circuit cards are placed in a functional test after being populated with semiconductor chips...

A: The total number of cards is 120, 5 are defective. Sample of 20 cards selected without replacement

Q: A poll is given, showing 20% are in favor of a new building project. If 6 people are chosen at rando...

A: ( 1 ) Given n =6,p=0.2,p(x=1) =? ( 2) Given n = 8 , p=0.05 , p( x=4 ) =?

Q: Imagine that you have a sack of 3 balls that can be either red or green. There are four hypotheses f...

A: Solution

Q: (i) If the selected smartphone is sold below RM2500, find the probability that the smartphone is fro...

A: Here define events and draw tree diagram  Smartphone sold is from China = C Smartphone sold is from ...

Q: A. Given a standard normal distribution, draw, find the area and write the probability notation. 1. ...

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Q: A card is drawn from an ordinary deck. Match the following with their probabilities. 10 2 6 7 8 10 6...

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Q: 1. List the elements of each sample space given belo"

A: Here AS PER POLICY I HAVE CALCULATED FIRST 3 SUBPART  Sample space is set of all possible outcomes  ...

Q: Activity Find the length of the confidence interval (LCI) given the following data: 1. o= 0.4, n= 56...

A: For the given standard deviation, sample size and confidence level. We need to find the length  of t...

Q: Find the number of ways of arranging the letters of the words DANGER, so that no vowel occupies odd ...

A: Given word: DANGER Number of letters = 6 Number of vowels = 2 (A and E) Number of consonants = 4 (D,...

Q: What is interaction? Provide an example about the design of a study that involves the examination of...

A: Definition of interaction and its example is given below

Q: The data shown below for the dependent variable, y, and the independent variable, x, have been colle...

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

Q: Let w = Ax - By where A and Bare rx q an rx p matrices of known constants and y and x are random vec...

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Q: To celebrate their grand opening in Bowling Green, Trader Joes is allowing the first 50 customers to...

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Q: You enter a chess tournament where you probability of win- ning a game is 0.3 against half the playe...

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Q: (a) The mass of a small loaf of bread is normally distributed with a mean of 500g and a standard dev...

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Q: c) For a gearbox of an excavator, a pair of gear operates at low speed. If the lifetime of the pair ...

A: The lifetime of the pair of identical gear follows Weibull distribution with the parameter α=0.0002 ...

Q: A senior inspector will inspect 10 rooms this week. (d) To have a fair representation, how many sea-...

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Q: Ho : µ = 6 vs Ha : µ # 6 has the value t* = 1.93. Based on this information %3D we would reject the ...

A: Given : n = 19  Null and alternative hypothesis is  Ho : u = 6  Ha : u ≠ 6  the Hypothesis test is a...

Q: Eight coins are tossed simultaneously. Find the probability of getting atleast six heads.

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Q: demand as a normal random variable with 0 mean and unit variance. What is the power demand value tha...

A: here given, system power demand follow normal distribution with mean zero and variance 1  so standar...

Q: In 1996, 58% of high school teachers felt it was a serious problem that high school students were no...

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Q: A probablity expenment consists of roling a eight-sided die and spinning the spinner shown at the ri...

A: We have given that 8 sided dice And, a spinner consist of 4 colour  Event : rolling a number less th...

Q: In a colony, there are 55 members. Every member posts a greeting card to all the members. How many g...

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Q: 4. Suppose the variance of X is 2.0091. Which of the following is(are) TRUE? L In the long run, the ...

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Q: If 28 helmets were randomly selected to be tested, find the probability that the crack pressures hav...

A: Let M denote the mean crack pressure for sample of size n = 28, then M follows N(mean = 150, SDM = 1...

Q: The mean of Binomial distribution is 3 and variance is. Find P(1 < x < 6)

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Q: The spinner is divided into equal sections. The arrow is spun one time. 3 3 9 9 9 What is the probab...

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Q: ruGKy Racer Clese 1-10 21-30 3(-40|41-so 11-20 frequeryl 3 S1-60 61-70 3. 7 2. Fraed the deuiaton ģ ...

A: Given data is Class Frequency 1 - 10 3 11 - 20 4 21 - 30 6 31 - 40 7 41 - 50 2 51 - 6...

Q: The chance of getting incentives in an exam is 1/3. What is the likelihood that at least one of thre...

A:   The chance of getting incentives in an exam is, The chance of not getting incentives in an exam i...

Q: 2.2

A:   male female total lower class 80 124 204   39.22 60.78 100   7.89 9.89 17.78   3.52 5.46 8...

Q: DA hot dog vendor at Memorial Stadium sells hot dogs for $5 each. He buys them for $2 each. All the ...

A: Given: μ=100σ=5Buy = $2 eachSell = $5 eachSell (Evening) = $1

Q: Weight after six 170 130 215 152 weeks For the population of all adults, assume that the weight loss...

A: Given : Weight before the diet ,X weight after six weeks, Y 180 170 125 130 240 215...

Q: For the sample: 45 84 73 58 54 73 52 60 51 80. Determine the variance and round answer to 2 decimal ...

A: We have given that,  The data of the sample is,  45, 84, 73, 58, 54, 73, 52, 60, 51, 80 Then,  We wi...