A computer salesman averages 1.3 sales per week. Find the probability that in a randomly selected week the number of computers sold is 4.

Q: Barts football coach tells him he'll start next year if he gains 10 pounds in 14 weeks between…

A: Given  Weight needs to be gained=10 pounds in 14 weeks. Weight trainer promised =1 kg every 3 weeks.…

Q: 99 coincidence interval Group of 19 Radom selected students Mean Age 22.4 Standard dievatuon 3.8

A: Given, Mean = 22.4 Standard deviation = 3.8 n = 19

Q: B: Calculate Expected value and standard deviation ? X p(x) 0 0.2 1 0.4 2 0.1 3 0.3

A:

Q: Jayda takes 4 hours to deliver 508 newspapers on her paper route. What is the rate per hour at which…

A: Rate is the measure that divide each observations happen per hour. Rate explains the number of times…

Q: A survey of recent e-commerce start-up firms was undertaken at an industry convention.…

A: From the given table, We have to calculate missing numbers, We have to calculate probability table…

Q: 78% of the questions on a student's test were correct. There were 50 questions. How many of the…

A: Given  Total number of questions =50 Percentage of correct questions =78%

Q: The random variable X, representing the number of cherries in a cherry puff, has the probability…

A:

Q: Example 17.2 The deviation of the size of an item from the midpoint of the tolerance field of width…

A:

Q: If one student is chosen from the school, what is the probability that the chosen student is a…

A: Given sophomore students are = 469 Total number of students = 2000

Q: Researchers at a reputable university and a reputable health organization claim that approximately…

A: Given that,p=74% =0.741-p=1- 0.74 = 0.26n = 85

Q: If a multiple-choice test consists of 5 questions each with 4 possible answers of which only one is…

A: Solution Given That, if a multiple choice test consists of 5 questions each with 4 possible answers…

Q: 4. Let the two dimensional discrete random variable (X,Y) have the following joint probability…

A:

Q: The original claim they actually pay is %.

A:

Q: a) What is the probability that a randomly selected individual owns shares in a bond fund? [ d b)…

A: P(that the individual owns share in high risk stock)=12100=0.12 P(that the individual owns share in…

Q: 28% of college students say they use credit cards because of the rewards program. You randomly…

A: Givenp=0.28n=10Let "x" be the no.of students say they use credit…

Q: Defects occur at random in planks of wood with an average of 0.5 per 10 cm length. Office building…

A:

Q: Suppose that you arrive at a bus stop randomly, so all arrival times are equally likely. The bus…

A: Given The bus arrives regularly every 10 minutes without delay.

Q: A machine randomly generates 1 of  9 numbers, 1...9, with equal likelihood. What is the probability…

A:

Q: The random variable X, representing the number of cherries in a cherry puff, has the probability…

A: The random X denotes the number of cherries in a cherry puff.

Q: If A and B are mutually exclusive, and if P(A) = 0.4 and P(B) = 0.2, what is P(AUB)? P(AUB)= ***

A: GivenA and B are mutually exclusiveP(A)=0.4P(B)=0.2

Q: The average individual monthly spending in the United States for paging and messaging services is…

A: Suppose a random variable X has mean µ and standard deviation σ. Therefore, the z-score of that…

Q: Find the probability that a person flipping a coin gets (a) the seventh head on the twelfth flip,…

A: Formula used :cnx px qn-x Binomial distribution is a discrete probability distribution the binomial…

Q: Is it more, less, or equally likely that the sum after rolling 4 fair dice is 21 or that the sum…

A: To get a 21, the outcome must be a permutation of (6, 6, 6, 3) (4 possibilities), (6, 5, 5, 5) (4…

Q: Consider a plane with a maximum capacity of 50 passengers. Suppose it is known that on a particular…

A:

Q: Three students took a test. The professor comes and tells them that only one has passed the test.…

A: Given:   Student A rejoices that his own chances of passing have improved from 1/3 to 1/2

Q: How to find margin of error

A: Margin of error tells us that how much we can expect our survey results to reflect the views from…

Q: 5.3% of what number is $2.28? Identify: - the percent (as a decimal) - the base (round to the…

A: 5.3% of what number is 2.28 ?

Q: The number of customers arriving per hour at a certain automobile service facility is assumed to…

A:

Q: 1. Let X denote the number of times a certain numerical control machine will malfunction: 1, 2, or 3…

A: Solution Marginal pmf of X f(x) =P(X=x)=xΣf(x,y) From joint pmf table P(X=1)=f(1, 1) +f(1, 2)+f(1,…

Q: INSTRUCTION: Provide Descriptive Statistics using the Data Analysis in Excel for the “Systolic Blood…

A: Descriptive statistics are calculated below: Excel Procedure: Enter the data for systolic blood…

Q: 2 You need to borrow money for gas, so you ask your mother. Before giving you money, she makes You…

A: Given that the spinner has evenly divided wedges with three red, two green and one blue.

Q: Make a probability distribution for the given set of events. The sums that appear when two fair…

A:

Q: A Statistics class consists of 16 boys and 14 girls. If each month is chosen at random a student to…

A: Given:16 boys14 girlsTotal n=30

Q: The probability density function (p.d.f) of the random variable X is given by i) ii) iii) = f(x) =…

A:

Q: a) A' b) AUB

A: here given ,  The sample space of random experiment is set of positive real numbers  S= {x| x>0 }…

Q: A car hire firm has cars which it hires out day by day. The number of demands for a car on each day…

A: Given that: The number of demands for a car on each day is distributed as a Poisson fashion with…

Q: A friend of mine is giving a dinner party. His current drinks include 6 bottles of Cola, 7 bottles…

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Q: When Susan and Jessica play a card game, Susan wins 60% of the time. If they play 9 games, what is…

A:

Q: f(x, y) = 24 0, ≤ y ≤ 4 otherwise

A: f(x,y) = 124(6-x-y) 0≤x≤2, 0≤y≤40    OW Marginal Density Functionfx(x) = ∫xf(x,y) dyfy(y) = ∫yf(x,y)…

Q: Amy rents a table at a fair, for which she is charged a $10 daily rental fee. She purchases apples…

A: Answer: 150 Apples The least number of apples she must sell is 150.

Q: B: A card is drawn from a well shuffled pack of 52 cards. Find the probability of: (i) '2' of…

A: GivenTotal no.of cards = 52

Q: 3. Let us consider Y = X₁(X₁+X₂), where X₁ and X₂ are two independent Bernoulli random variables…

A: Given that X1 and X2 are independent Bernoulli random variables with parameter p=1/4. That is,…

Q: The A event is defined on a sample space S. Which of the following is NOT true? O a. A'nA=0 O b.…

A: Given that  A be the event is defined on a sample space S Let A=(1,2,3) , S=(1,2,3,4,5,6)

Q: 1. Let X denote the number of times a certain numerical control machine will malfunction: 1, 2, or 3…

A: f(x,y)     y=1   y=2     y=3    Total       x=1   0.10  0.05    0.02   0.17…

Q: In a lottery game, a player picks 9 numbers from 1 to 49. If 8 of the 9 numbers match those drawn,…

A:

Q: a. Find the marginal distribution g(x), x = 1, 2, 3. b. Find the marginal distribution h(y), y = 1,…

A: here given ,  joint distribution Of random variable X and Y  Let X denote the number of times a…

Q: A result is significant at the 0.01 level. Explain why it must also be significant at the 0.05…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only…

Q: If X₁, X₂, ..., X is a random sample from the population with E distribution (4,0) with density…

A: 3. From the given information, the density function is, fx|θ=16θ4x3e-xθ, x>0 Consider, the…

Q: Q4: The following data represent weights for 25 items construct a frequency distribution table: 15,…

A: First Arrange data in ascending order are.  1, 1, 2, 2, 3, 5, 5, 5, 7, 8, 8, 8, 9, 9, 10, 10, 10,…

Q: How many ways can a student check off one answer to each question and get all the questions wrong?…

A: The objective is to find the number of ways a student can check off one answer to each question and…