There are 2 clerks in a college to receive dues from the students. If the service time for each student is exponential with mean 4 minutes, and the boys arrive in a Poisson fashion at the counter at the rate of 10/hour, what is the percentage of idle time for each clerk?.

Q: . For each of the following, determine the sample size needed to get the desired accuracy of the…

A: For the first part we have to find sample size needed when  margin of error, population standard…

Q: Out of first 20 natural numbers, one number is selected at random. The probability that it is either…

A: From the provided information, One number is selected out of first 20 natural numbers. First 20…

Q: regression line?

A: Regression equation is given by,  Y= a+b*X  where a is intercept (constant) and b is slope…

Q: In April of 2011, the unemployment rate in Canada was reported to be 7.7%. Suppose that Statistics…

A: One sample proportion test is used to compare the significance difference between sample proportion…

Q: The probability of success of three students X, Y and Z in the one examination respectively. are…

A:

Q: EXAMPLE 6.23 People arrive at a theatre ticket booth in Poisson distributed arrival rate of 25 per…

A:

Q: A survey of 500 randomly chosen students at a particular college found that 117 of them actively…

A: Since you have posted multiple questions, we will provide the solution only to the first question as…

Q: 60 drive Daily Driving The average number of miles a person drives per day is 24. A researcher…

A: Population mean (µ) = 24Standard deviations (σ) = 3.9Sample size (n) = 32Sample mean (x̅) =…

Q: If the area to the left of in a normal distribution is 0.27, what is the area to the right of a?…

A: It is given that the area to the one side of x in a normal distribution.

Q: Are low-fat diets or low-carb diets more effective for weight loss? A sample of 61 subjects went on…

A: given data x¯1  = 2.1s1 = 4.71n1 = 61x¯2 =3.7s2 = 5.67n2 = 63α = 0.05claim : μ1 < μ2

Q: Identifying individuals with a high risk of Alzheimer's disease usually involves a long series of…

A: Given information: 7-Minute Screen Cognitive Series 3 11 8 19 10 22 8 20 4 14 7 13…

Q: Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and…

A: given data, normal distriution mean =0standard deviation =1x~N(0,1)we have to find out the…

Q: King Salmon in the Kenai River. Deion works for Alaska Fish and Game. They would like to know the…

A: Solution-: We want to find, (a) 95% C.I. (b) Margin of error=? (c) Interpret 95% C.I.

Q: The cost of attending your college has once again gone up. Although you have been told that…

A: Given information:…

Q: The table below gives the age and bone density for five randomly selected women. Using this data,…

A: SOLUTION The regression equation is ŷ = b0+b1x X Y X*Y X² Y² 40 357 14280 1600…

Q: The Berkman Center for Internet & Society at Harvard recently conducted a study analyzing the…

A:

Q: Suppose that the average number of Facebook friends users have is normally distributed with a mean…

A: given data normal distribution μ = 150σ = 58n = 48

Q: 7.71 Comparison of dietary composition. Refer to Example 7.15 (page 443). That study also broke down…

A:

Q: Example 2.32 Suppose there are 25 different types of coupons and suppose that each time one obtains…

A: Solution-: Suppose there are 25 different types of coupons, and suppose that each time one obtains a…

Q: Starting at a fixed time, each car entering an intersection is observed to see whether it turns left…

A: Starting at a fixed time, each car entering an intersection is observed to see whether it turns left…

Q: If two letters are taken at random from the word HOME, what is the probability that none of the…

A:

Q: A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose…

A: A) option A is the answer. Answer : Since the distribution of time spent eating and drinking each…

Q: The table below gives the list price and the number of bids received for five randomly selected…

A: The number of bids would be the predictor variable and price in Dollars would be the predictor…

Q: Listed below are the overhead widths (in cm) of seals measured from photographs and the weights (in…

A: Correlation: Correlation a measure which indicates the “go-togetherness” of two data sets. It can be…

Q: he listed occupations of stockholders of a national computer company included 9% who were…

A: From the provided information, he listed occupations of stockholders of a national computer company…

Q: In a recent survey, 59% of the community favored purchasing a new playground in their neighborhood…

A: It is given that 59% of the community favored purchasing a new playground in their neighborhood…

Q: EXAMPLE 6.41 Find queue length of the system if λ = 12 per hour, μ = 4 per hour, Po= 0.0313, and c =…

A: Find queue length of the system if  λ= 12 per hour. μ = 4 per hour. P0= 0.0313 and  c = 4

Q: The new management team of a company with 200 staff members wants to know the efficiency of its…

A:

Q: Example 3.10 Sam will read either one chapter of his probability book or one chapter of his history…

A:

Q: In a large clinical​ trial, 393 comma 995 children were randomly assigned to two groups. The…

A: n1=197820 x1=25 n2=196175 x2=75

Q: A school board randomly selects 120 enrolled students and surveys their parents (or other guardians)…

A: Given is a question based on Box model of simulation. We need to categorize whether the given…

Q: Suppose a simple random sample of size n = 50 is obtained from a population whose size is N = 30,000…

A:

Q: A large population has a mean of 60 and a standard deviation of 8. A sample of 50 observations is…

A: GivenMean(μ)=60standard deviation(σ)=8sample size(n)=50

Q: A company has recently introduced a new hardware brand. The firm would like to estimate the…

A: From the given information, out of 150 randomly selected individuals from the target market segment,…

Q: According to the latest research 91% of people are right handed. In a sample of 120 people, what is…

A: Given: p = 0.91 n = 120 Formula Used: Mean = n×p

Q: The table below gives the age and bone density for five randomly selected women. Using this data,…

A: Given: n = 5 Formula Used: Slope b1 = n∑XY-∑X∑Yn∑X2-∑X2 Intercept b0 = ∑Y-b1∑Xn

Q: Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: In a two-way data table, you can compare how different values of one input variable influence the…

A: Two way -variable data table shows how various combinations of 2 sets of variable values affect the…

Q: The standard deviation of the weights of elephants is known to be approximately 15 pounds. We wish…

A: Length of Confidence interval depends on sample size.

Q: to study a presumed inverse relationship between black tea consumption and cardiovascular disease,…

A: Given data : Randomly selected sample = 13500 Age = 50 - 64 Treatment for cardiovascular disease…

Q: The amount of calories consumed by customers at the Chinese buffet is normally distributed with mean…

A: given data, normal distribution x = no of caleries that custmor consumesμ=2747σ=619we have to find…

Q: A May 8, 2008, report on National Public Radio (www.npr.org) noted that the average age of first-…

A: the sample size is 57, sample mean is 23.90 and population standard deviation is 4.80.

Q: What is the purpose of fractional factorial designs? Why should you consider using center points in…

A: As per our guidelines I can solve first three subparts. Kindly post the remaining subparts again.

Q: There are 2 clerks in a college to receive dues from the students. If the service time for each…

A:

Q: Using the formulas, calculate the (i) mean and (ii) standard deviation of X. Use your calculator to…

A:

Q: What are Gamma Random Variables?

A:

Q: Suppose the joint density of X and Y is given by [6xy(2-x-y), 0<x< 1,0 <y<1 otherwise Compute the…

A:

Q: uppose we find a 99% confidence interval for the true value of the population parameter, π, to be…

A: given data, confidence interval =0.99confidenece interval is 0.75±0.04

Q: Refer to the data set in the accompanying table. Assume that the paired sample data is a simple…

A: In hypothesis testing, there are two hypotheses - null and alternative. By using the sample values,…

Q: Researchers want to investigate whether taking aspirin regularly reduces the risk of heart attack.…

A: Population :  Population is men aged 50 to 84. Sample :  Sample is 400 men who participants.…