Probability Question
Q: 2. The probability that Tom will be alive in 20 years is 0.7 and the probability that Nancy will be ...
A: Let A be the event that Tom will be alive in 20 years Let B be the event that Nancy will be alive in...
Q: The average of the continuous random variable is normally distributed as 40, the standard deviation ...
A: Given - Given distribution is normal μ=40 and σ=10 To Find - P(30<x<50) We know that Z score...
Q: Determine the is a non-negative integer
A: The number of non-negative integer solution to the vectors x1,x2,x3....................................
Q: There are 20 people in a class. 12 of them are female students and 8 are male students. A commission...
A: Provided information is ; n= total number of peoples = 20 Combination Formula : Crn=n!r!(n-r)! w...
Q: please show step by step explanations. Thank you.
A: From the information provided in the Question : Let the random variable M denotes the number of time...
Q: Corporate Perceptions Study 2011 surveyed readers and asked how each rate- reputation of the company...
A: The data of quality management and the reputation of the company, rated on and excellent, good and f...
Q: 36 - Calculate the variance of X, Var (X) =?, By finding the value a in the table so that the X rand...
A: From the given data: We know that sum of f(x)=1 ∑f(x)=25+a+320+7201=25+a+320+720a=1-910a=110 The val...
Q: It is desired to write a 3-digit number using the numbers 2, 3, 4, 5, 6. If each number is used only...
A: Given: Numbers used = 2, 3, ,4, 5, 6 Numbers greater than 530 is required to be found. No digit is r...
Q: Give given, required, and solution to each problem.
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Q: Can I get some help on problem 2 A-C
A: Given, n=41x=192s=25μ0=200α=0.05 1). Since the mean cholesterol level of 41 adults after taking one ...
Q: A well-known brokerage firm executive claimed that at least 55 % of investors are currently confiden...
A: Given, p = 0.55 x = 30 n = 58 To find, calculate Z test statistic = ?
Q: The birth rate in a hospital is given to match the Poisson distribution with an average of 1.2 per h...
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Q: Let X be a random variable that indicates the charging time of a battery. The probability density fu...
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Q: 36 - Calculate the variance of X, Var (X) =?, By finding the value a in the table so that the X rand...
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Q: How many ways to arrange a 4-digit number, provided that the said number must be even and there are ...
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Q: 4 - A product is bought for 130 liras and sold for 169 liras. What is the rate of profit accordingly...
A: He bought a product for 130 So let P= 130 He sold it for 169 S= 169 Profit=(S-P)= 169-130 = 39
Q: X 1 2 3 4 5 6 Rel. Freq. .05 .2 .15 .3 .15 .15 Find the Mode ____________Find the Mean __________
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Q: 3.10 Heights of 10 year olds: Heights of 10 year olds, regardless of gender, closely follow a normal...
A: Given, μ = 55 σ = 6
Q: In a plastic bag there are 12 white marbles, 7 green marbles, and 8 blue marbles. What is the minimu...
A: Given Data: Number of white marbles=12 Number of green marbles=7 Number of blue marbles=8 To Find:...
Q: A restaurant will select 1 card from a bowl to win a free lunch. Jo puts 5 cards in the bowl. The ...
A: Given:- Total cards =100 free lunch winning cards =5 we have to find the probability of winning ...
Q: Q: Given a set of (10) transistors, (2) of them are defective. Choose a sample of (4) transistors, t...
A: Here the probability of a particular event takes place. It is defined as the total outcome of the da...
Q: For Exercises 11–15, calculate the quantities needed to prepare the solid and semisolid compounds. R...
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Q: 5 -))A group of students from 85 people, 35 people, basketball, football, 42 people, 26 people are p...
A: From the below diagram, it can be seen that, The given information is represented in the venn diag...
Q: A student saves Rs.12 at the end of the first week and goes on increasing his saving Rs.4 weekly. Af...
A: It is an important part of statistics. It is widely used.
Q: The probability that a face card is selected, given that a queen is selected is
A: Note that queen is a face card itself. So if a queen is selected then we obviously get a face card. ...
Q: A fair coin is tossed three times (consecutively). If X is the number of heads of the first shot and...
A: It is an important part of statistics . It is widely used .
Q: The following figure provides a bar chart showing the annual advertising revenue for Facebook from 2...
A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If y...
Q: please assist
A: (a) a. P( X=25) =0.10 ( from table given) b. P(X≤50) = P(X=25) +P(X=50) =0.10+0.3...
Q: In a Statistics class, there are 22 Ghanaians, 15 Nigerians and 10 Togolese. A two-member committee ...
A: Given that In a statistics class Ghanaians = 22 Nigerians = 15 Togolese = 10 Total students = ( 22...
Q: Multivariable question
A: The probability density function is fx,y=C1-x2-y2, if x2+y2≤10, ot...
Q: A box contains 12 black pens and 5 red pens . In how many ways 5 pens can be chosen such that 1)no r...
A: Given, A box contains 12 black pens and 5 red pens. 1). If no red pens are choosen then all the pens...
Q: 3. A class in advanced physics is comprised of 10 juniors, 30 seniors, and 10 graduate students. The...
A: Given : Number of junior students = 10 Number of senior students = 30 Number of graduate students = ...
Q: A bowl contains seven blue chips and three red chips. Three chips are to be drawn successively at ra...
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Q: 100 Grades in a History courses are organized as per the following table: A B C D F ...
A: The total number of grades is 100. Apply the probability formula , P=foto. Here fo=favourable outcom...
Q: C only
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Q: C. Identify if variable is dependent (D) or independent ( 1): 18. subject failed. 19. length of time...
A: As the name indicates, the dependent variable is the variable which depends upon the independent var...
Q: 13 about disjoint subsets A and B of a universal set U, except assume that n(U)=100, n(A)=30, and n(...
A: Given, n(U)=100 n(A)=30 n(B)=50 n(A′∪B)=?
Q: In a communication channel, data is sent in 10-bit packets. The percentage of a bit sent with error ...
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Q: 5 Assume that there are 8 rats in the cage: 6 trained and 2 untrained. A rat is removed from the cag...
A: U=untrained rat T=trained rat Given that there are 6 trained and 2 untrained rats. This means 6 of ...
Q: Refer to a bag containing 20 balls—six red, six green, and eight purple. In how many ways can we sel...
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Q: Calculate the standard deviation value by finding the value a in the table so that the random variab...
A: From the given information, x 0 1 3 4 f(x) 2/5 a 3/20 7/20 The value of a is obtained below...
Q: A fair coin is tossed three times (consecutively). If X is the number of heads of the first shot and...
A: It is an important part of statistics . It is widely used .
Q: Let z be a random variable with a standard normal distribution. Find the indicated probabilities. ...
A: Given: The objective is to find the indicated probabilities for a random variable with a standard no...
Q: Box A contains 11 balls with numbers from 1 to 11 and box B contains 7 balls with numbers from 1 to ...
A: Given data, Box A contains Total number of balls = 11 Number of even numbered balls = 2, 4, 6, 8, 10...
Q: A survey of 90 customers was taken at Barnes & Noble regarding the types of books purchased. The...
A: Let us denote: M=mystery novels S=science fiction novels R=romance novels Given that: n(M)=44, n(S)=...
Q: A box contains 4 black, 2 red and 3 white marbles. In which of the following ways is it correct to s...
A: Given: A box contains 4 black, 2 red, and 3 white marbles, and 4 balls are selected from this box. 4...
Q: 1. The amount of water discharged by the Davao River has changed over time in roughly a straight-lin...
A: The regression line predicting the water discharge given year is -7792+4.226× years
Q: Probability Question
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Q: Of 52 students, it was found that 15 were commuters. If one-quarter of the female students and one-t...
A: Let, x be no of male students y be no of female students Given, x+y=52 -->1 15 were commuters. I...
Q: Files of 30 tax returns are audited by financial control experts. Since it is known that 8 of these ...
A: Given data, Let X be the number of files that are inaccurate n=30 x=8 sample proportion p=x/n =8/30 ...
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