If the arrival and departure rates in an M/M/1 queue are 1/2 per minute and 2/3 per minute respectively, find the average waiting time of a customer in the queue.

Q: If p=30% and n=220, find X. X= X Ś

A: given data  p^ = 30 % = 0.30n = 220X = ?

Q: Assume the random variable X is normally distributed with mean μ = 50 and standard deviation o=7.…

A: given data, normal distribution, μ=50σ=7p(35<X<63)=?

Q: Last year the average starting salary for New York State University  graduates was $1,000 with a…

A: Given: μ = 1000 σ = 200 n = 26 X = 1050 α = 5% = 0.05 Formula Use: Test-statistic Z = X-μσn

Q: Describe the differences between a nominal and an ordinal scale.

A: Nominal and ordinal are the levels of measurement. In case of Nominal scale variables are simply…

Q: Assume there are 3,600 cases in the validation dataset, and 12% of these cases have a value of 1 for…

A:

Q: Consider the graph below. 10 9 8 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 8 9 10 Which correlation coefficient…

A: The objective is to identify which correlation coefficient best represents the given points.

Q: The following estimated regression equation based on 10 observations was presented. ŷ = 27.1870 +…

A: The estimated regression equation is provided as follows: y^ = 27.1870 + 0.5709x1 + 0.4920x2 where y…

Q: It can be determined that fx,y (x, y) = 2/3. Determine E[XY]. Hint: The solution requires two double…

A:

Q: An insurance company is trying to estimate the average number of sick days that full-time food…

A:

Q: Carbonated Beverage: The fill volume of an automated filling machine used for filling bottles of…

A: Formula used: For z value            Z = (x - mu)/sigma

Q: The lifetime of a certain kind of electric bulb may be considered as a RV with mean 1200 hours and…

A: The life time have mean 1200 and standard deviation 250.

Q: A croissant shop produces two products: bear claws (B) and almond-filled croissants (C). Each bear…

A: by bartleby policy i can gives only 3 subparts answers at a time   Suppose, number of bear claws…

Q: Shamma conducted a left-tail test to determine whether ZU students sleep, on average, less than 7…

A: We have given that the  p-value for the left tailed test is p-value = 0.125

Q: Let X Unif(0, 2) and Y~ Bi(2,0.5). If Z is a mixture of X and Y with equal weights, graph the…

A: Given that

Q: If X and Y are independent random variables and U=X+ Y, complete the proof that the cumulative…

A:

Q: A Loss is modeled by a uniform distribution on [1000,2500]. Calculate the semi-standard deviation of…

A: Let X be a random variable from uniform distribution. Then the formula for variance V(X) =…

Q: If a customer has to wait in an (M/M/1): (∞/FIFO) queue system, what is his average waiting time in…

A:

Q: 2. Patients with chronic kidney failure may be treated by dialysis, using a machine that removes…

A:

Q: PLEASE WRITE OUT THE WORK ASAP, do NOT TYPE IT

A:

Q: Question 12 The Census Bureau of the US Department of Commerce estimated that average e-commerce…

A: As per our guidelines we are suppose to answer only one question kindlypost the remaining question…

Q: Public Housing Authority in a certain community conducted a survey of 1000 families to determine the…

A: Suppose a random experiment E is repeated n times under same essential conditions and an even A,…

Q: Consider the following Minitab display of two data sets: Variable N Mean SE Mean StDev Minimum Q1…

A: Variable  C1 N  = 20 Mean= 20 SE Mean= 1.62 StDev= 7.26 Minimum= 7 Q1=15 Median= 20 Q3 = 25 Maximum=…

Q: Researchers are investigating whether people who exercise with a training partner have a greater…

A: Given:-             Researchers are investigating whether people who exercise with a training…

Q: The housing market has recovered slowly from the economic crisis of 2008. Recently, in one large…

A: given data sample size (n) = 49sample mean ( x¯ ) = 8929sample standard deviatio (s) = 117199% ci…

Q: wsgroup is interested in constructing a 95% confidence interval for the proportion of all Americans…

A: given data, CI=0.95α=1-0.95=0.05n=504x=448p^=xn  =448504  =0.8888

Q: f(t; B₁, B₂) = B1 B₂ · (e-P₁² - e-B₂¹) - B₂ - B₁

A:

Q: Life on Other Planets Forty-eight percent of people believe that there is life on other planets in…

A: given data clim : p ≠ 0.48n = 130x = 52α = 0.05p^ = xn = 52130 = 0.4000

Q: State the equations of the two regression lines. what is the angle between them?

A:

Q: Under the new process, the CTO has specified that 0.50 ± 0.01 mL of rennet should be added for every…

A: Note: In case of multiple questions, as per the guidelines, answer to first question will be…

Q: Select the statement that is equivalent to I saw The Titanic or Napoleon Dynamite. Choose the…

A: Option C is the answer. If I did not see the Titanic, I saw Napolean Dynamite

Q: What is the total degree of freedom for the test?       A. 18       B. 17       C. 16       D. 15

A: Given that  There are three type of gasoline A , B and C. The litres per Kilometre for a random of 6…

Q: (b) Based on your answer to part (a), choose the correct statement. The value of the test statistic…

A: From the part a, The critical values are -1.645 and 1.645. Test statistic is 2.041.

Q: Lucy recently switched her primary doctor to one specializing in caring for elderly patients. On her…

A: given data,claim:n=19X¯=132S=24α=0.05claim:μ>120

Q: To test Ho: o = 4.2 versus H₁: o #4.2, a random sample of size n = 17 is obtained from a population…

A: H0 : σ = 4.2H1 : σ ≠ 4.2n =17

Q: May I know the answer of subq d and e with the process

A: Given that, m= 5 Σi=5m (yi)3 is (6)3 because i= 5 to m that means i= 5  so yi=5= 6

Q: QUESTION 15 Aircrew escape systems are powered by solid propellant. The burning rate of this…

A: Given Hypothesis Ho: μ=50  Vs  H1: μ ≠50

Q: An experiment involves dropping a ball and recording the distance it falls (y) for different times…

A: Here we are given a data and 4 scatter plots.  From which we have to choose the one that best fits…

Q: In a survey of 3352 adults, 1435 say they have started paying bills online in the last year.…

A: From the provided information, Sample size (n) = 3352 From which 1435 say they have started paying…

Q: 7. In this electric billiards game, the ball is so likely to fall to one side or the other after…

A: By classical definition of probability, the probability of an event is ratio of the number of cases…

Q: Test the claim that the proportion of men who own cats is significantly different than the…

A: From the provided information, nM=40p^M=0.45nF=60p^F=0.55 Level of significance (α) = 0.02

Q: Cigarette Smoking A researcher found that a cigarette smoker smokes on average 32 cigarettes a day.…

A: The question is about hypo. testing Given : Popl. avg. of cigarette smokers smokes a day ( μ ) = 32…

Q: Which interval level input variables lowers the odds of churning with each unit increase in the…

A: Given Information: Consider the given results of the coefficients and statistics table from logistic…

Q: Do a curve fit using the nonlinear regression method and use a polynomial modeL

A: Given the data as deformacion unitaria esfuerzo (Pa) 0.1338 494.14 0.2675 912.79 0.3567…

Q: Use the Standard Normal Table or technology to find the z-score that corresponds to the cumulative…

A: We have given that  P(Z< z) = 0.8365

Q: Assume the random variable x is normally distributed with mean μ = 50 and standard deviation o = 7.…

A:

Q: A researcher would use a one-way between-groups ANOVA to test a hypothesis about levels of…

A: ANOVA is a inferential method which is used to test the equality of three or more types of…

Q: Suppose that a constant voltage source of 10 V supplies a current I (in mA) through a resistive load…

A: It is provided that a constant voltage of 10V supplies a current, I (in mA) through a resistive load…

Q: EXAMPLE 6.55 Find the length of the queueing system in an (M/M/1): (4/FIFO) model, if λ = 3 per hour…

A:

Q: A college claims that the proportion, p, of students who commute more than fifteen miles to school…

A: given data, claim:p<0.25n=260x=46p^=xn=46260=0.1769α=0.05

Q: According to a study done by UCB students, the height for Martian adult males is normally…

A: