4 firm has two cars which it gives on rent every day. Average demand of car is 1.5 per day. Using Poisson distribution, find probability : () of the day no car is used, and (ii) some dernand is refused.

Q: Why is normal distribution important in statistics and in everyday life?

A: Answer Given normal distribution important in statistics and in everyday life

Q: n=12, CL=90% x2 an-1

A: Given,n=12α=1-0.90α=0.1degrees of freedom(df)=n-1df=12-1=11

Q: You measure 42 dogs' weights, and find they have a mean weight of 66 ounces. Assume the population s...

A: Given,sample size(n)=42population standard deviation(σ)=12.1α=1-0.95=0.05α2=0.025Z0.025=1.96     (fr...

Q: Stress at work: In a poll about work, 84% of respondents said that their jobs were sometimes or alwa...

A:

Q: 11. Let X and Y have the joint density 1 -e-(x+y)/0 for 0 < x < y < o and zero elsewhere 02 Find a s...

A:

Q: need help with my math question. Can you help?  According to a study done by UCB students, the heig...

A: We have given that mean = μ = 68standard deviation = σ = 2.4

Q: The weights of new born black bear cubs are uniformly distributed with minimum of 245 and maximum of...

A: GivenThe weights of new born black bear cubs are uniformly distributed withminimum of 245 and maximu...

Q: finish in a random order, what is the probability that the gambler will win her bet?

A: here given gambler place bet on horse race  to win , she must pick top 3 finishers in order  here us...

Q: asked to guess the average weight of the six watermelons by taking a random sample without replaceme...

A: Here use sampling distribution without replacement 

Q: A school principal would like to know which days of the week students would likely to be absent. The...

A: From the provided information, H0: Equal frequencies H1: Unequal frequencies Number of rows (r) = 2 ...

Q: Out of the two regression equations given below, which one is the equation of X on Y and which one t...

A: Given two equations2X+4Y=104X+6Y=8

Q: Q3. Which of these statements about the 95% C.I. for µ is incorrect? A. Pr( C.I. contains µ = 95%) B...

A: Solution-: Which of these statements about the 95% C.I. for the μ is incorrect? (A) P(C.I. contains ...

Q: can you explain in 800 words,  basic elements of sampling?

A: Sample : Sample is small, manageable, version of large group (population).  It is a subset of popula...

Q: 3. Rish Florist determines the probabilities for the number of flower arrangements they deliver each...

A: Let X be the random variable having probability distribution is,  X 6 7 8 9 10 P(x)  0.2 0.2 0....

Q: f all participants in a repeated measures research study show roughly the same difference between tr...

A: Hypothesis test is conducted to check the difference. To check mean differences we use either Z or T...

Q: Moving from static efficiency state with an unlimited resource supply to a dynamic efficiency state ...

A: Question:

Q: Suppose we know that the mean score among the population of college students taking the GMAT test is...

A: Solution-: Given: μ=1000,σ=1200,n=100 We find, P(we will observe a sample mean greater than 1200)=? ...

Q: Consider the model y = Bi +x2B2 + x3ß3 +e and suppose that application of least squares to 20 observ...

A:

Q: The cost of living index number on a certain date was 200. From the base period, the percentage incr...

A: Solution is given:

Q: The plots below were created using the Galton data set from the mosaic package. For each, provide R ...

A: R code Data analysis often involves visualization. Some insights that may not be apparent in numbers...

Q: n=20, a =0.01 -"/2,n – 1

A:

Q: Identify the level of measurement for each variable. Based on your personal experience, form a hypot...

A:

Q: 500 elementary school boys and girls are asked which is their favorite color blue, green, or pink. ...

A: In order to determine whether there is a dependence between the gender and favorite color city, a ch...

Q: A pediatrician obtains the heights of her 200 three-year-old female patients. The heights are approx...

A: GivenMean(μ)=38.72standard deviation(σ)=3.17

Q: (b) Interpret this probability by estimating the percentage of all people whose main satisfaction in...

A:

Q: An article in Fire Technology investigated two different foam expanding agents that can be used in t...

A: For the given data Find 95% C.I  for sigma1^2/sigma2^2

Q: The one-sample t statistic from a sample of n = 19 observations for the two-sided test of Ho : µ = 6...

A: Given: n= 19H0= 6Hα≠6t=1.93

Q: 2. A line has equation y=r-0.5 a. Pick five distinct x-values, use the equation to compute the corre...

A:

Q: The following frequency distribution shows the number of crimes committed in a sample of 100 urban n...

A: Procedure to construct the Histogram:   EXCEL procedure to plot Histogram:   Go to EXCEL Go to Inse...

Q: In a normal distribution with a mean of 72 and a standard deviation of 12, what percentage of cases ...

A: GivenMean(μ)=72standard deviation(σ)=12

Q: For a group containing 100 observations, the arithmetic mean and standard deviation are 8 and v10.5....

A: Given that :  For Combine group  Total sample size(n)=100  Arithmetic mean =8  Standard deviation=√1...

Q: Twenty years ago, Juan Medina and Bertha Zenith got married. The Medina-Zenith family's biggest life...

A: P(Having a boy) = 1/2, P(Having a girl) = 1/2 P(Having atleast one Girl) = 1 - P(Having no girl) P(H...

Q: Suppose the reaction temperature X (in °C) in a certain chemical process has a uniform distribution ...

A: As per our guidelines we are supposed to answer only 3 sub-parts (if there are multiple sub-parts as...

Q: Example 11. A frequency distribution gives the following results: Co-efficient of variation = 5 Karl...

A:

Q: Using the table above, answer the questions below A) What is P(A'|B)? B) What is P(B|A)? C) What is ...

A: From given table, P(A) = 86/129 P(B) = 75/129 P(A' and B) = 25/129 P(A and B) = 50/129 Note : Accord...

Q: The owner of a chain of fast food restaurants is considering a new computer system for an accounting...

A: With the help of table we have to first found expected time and variance  

Q: 4, symmety the area under the standava novmal euwe to the nght Of z= - 0,51 is 0. 6950. What is the ...

A:

Q: A baker keeps count of the number of doughnuts sold each day for consecutive selected 15 days. The n...

A: as per bartleby guideline expert have to answer first question three subpart only dear student pleas...

Q: Is the difference of means significant ? The value of t for 9 degress of freedom at 5% level is 2.26

A:

Q: (b) Verify that f(y) dy = 1. F) dy = 0+S 25 y dy 10 f(y) dy = 25 4-2-2+1/2 %3D = 1 (c) What is the p...

A:

Q: what is the probability that a randomly selected case falls between 60 and 68? And what is the value...

A: It is given that X follows N(mean = 72, SD = 12), then Z = (X - mean)/SD follows N(0,1)

Q: QUESTION 11 A random sample of 40 adults has a mean annual earnings of $3120. Assume the population ...

A:

Q: Complete parts (a) and (b) below. The number of dogs per household in a small town Dogs 1 2 3 4 5 Pr...

A: mean=μ=E(X)=∑X.P(X)

Q: Suppose a jar contains 19 red marbles and 10 blue marbles. If you reach in the jar and pull out 2 ma...

A: Given that : A jar contains  Red marbles = 19 Blue marbles = 10  Total marbles = 29   By using the c...

Q: The one-sample t statistic from a sample of n = 19 observations for the two-sided test of Ho : u = 6...

A:

Q: Fewer young people are driving. In year A, 65.9% of people under 20 years old who were eligible had ...

A: Given that, For year A, P hat = 0.659, For year B, P hat = 0.457, n = 1600 (a)At 95% confidence, wha...

Q: The following data relate to the sales, in a time of trade depression of a certain article in wide d...

A:

Q: Determine whether the random variable X has a binomial distribution. If it does, state the number of...

A:

Q: Let X,....X, be a random sample from the N(6, o?) distribution, suppose that the prior distribution ...

A: From the given information, X1,X2,...,Xn be a random sample from the Nθ,σ2 distribution. fXi|θ=1σ2πe...

Q: (d) Is the outlier influential? Explain. (Choose one) ▼ removing the outlier (Choose one) the positi...

A: Is the outlier influential? Explain.