Job interarrival times to a process are hypothesized to follow an exponential distribution with rate A = 2 jobs/hour. A sample of 49 interarrival timesare categorized in 20 minute intervals as given below.Interval Observed0-202120-401240-6060-8080-100 2>1003i) Find the Chi-Sq test statistic. (Answer precision: 1/1000)ii) The degree of freedom for the hypothesis test would be:

Given the sample data of 49 interarrival times are categorized in 20 minute intervals as Interval…

Answered: Job interarrival times to a process are…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Sales delay is the elapsed time between the manufacture of a product and its sale. According an article it is quite common for investigators to model sales delay using a lognormal distribution. For a particular product, the cited article proposes this distribution with parameter values μ = 2.08 and o² = 0.03 (here the unit for delay is months). USE SALT (a) What are the variance and standard deviation of delay time? (Round your answers to two decimal places.) 2.01 1.42 ✓ months² months variance standard deviation (b) What is the probability that delay time exceeds 12 months? (Round your answer to four decimal places.) 0096 (c) What is the probability that delay time is within one standard deviation of its mean value? (Round your answer to four decimal places.) 0.8485 X (d) What is the median of the delay time distribution? (Round your answer to two decimal places.) 8.00 months (e) What is the 99th percentile of the delay time distribution? (Round your answer to two decimal places.)…
In a biological experiment, three treatments were randomly selected from a large population of possible treatments. Then, ten randomly selected observation were then obtained from each treatment is selected. Table Q2(b) shows the ANOVA table for the observation. Table Q2 (b): ANOVA Source of df Sum of squares ftest Mean of squares (MS) variation (SS) Treatment 2 110.6 Error 25 Total 27 608.3 (1) Complete the ANOVA table in Table Q2(b) (ii) By using a = 0.05, test the null hypothesis in Part (1) (2 marks) (6 marks)
What type of distribution is appropriate to model the number of cars driving through a certain road between 2 and 3pm on a typical day Exponential Poisson Binomial Geometric Normal
The per capita energy consumption level (in kilowatt-hours) in a certain country for a recent year can be approximated by a normal distribution, as shown in the figure. (a) What consumption level represents the 9th percentile? (b) What consumption level represents the 19th percentile? (c) What consumption level represents the third quartile? 22504250250Kilowatt-hours μ=2250 kWh σ=579.5 kWh x A normal curve labeled mu = 2250 k W h and sigma = 579.5 k W h is over a horizontal x-axis labeled Kilowatt-hours from 250 to 4250 in increments of 1000 and is centered on 2250. Question content area bottom Part 1 (a) The consumption level that represents the 9th percentile is 11 kilowatt-hours.
The per capita energy consumption level (in kilowatt-hours) in a certain country for a recent year can be approximated by a normal distribution, as shown in the figure. (a) What consumption level represents the 10th percentile? (b) What consumption level represents the 19th percentile? (c) What consumption level represents the third quartile? =2323 kWh σ = 590.5 kWh x 323 2323 Kilowatt-hours 4323
high school teachers in a particular school system. A simple random sample of n= 15 All 15 teachers are interviewed to determine their salaries for this year and the previous teachers is selected from an alphabetical listing of all high school teachers in the system. 6.10 Members of a teachers' association are concerned about the salary increases ge Savat t do 6.9 SUMMARY 193 year (see the accompanying table), Use these data to estimate R, the rate of change, for N = 750 high school teachers in the community school system. Place a bound on the error of estimation. Teacher Past year's salary Present year's salary 15,400 16,700 792,קו 19.956 16,355 15,108 17,891 15,216 15,416 15,397 16,500 17,600 18,920 21,400 17,020 16,308 19,100 16,320 3 16,420 16,600 19,560 17,750 20,800 18.300 10 11 18,152 16,436 19,192 17,006 17,311 12 13 14 15 18,920 An exnerimantor uO inu
Question 7 of 7 -/ 1 View Policies Current Attempt in Progress Assume that the annual earnings of all employees with CPA certification and 6 years of experience and working for large firms have a bell-shaped distribution with a mean of $138,000 and a standard deviation of $11,000. Using the empirical rule, find the interval that contains the annual earnings of 68 % of all such employees. ($ i $ i JAA. II
Estimated Speed Smashed into hit n = 16 n = 16 M = 40 M = 34 SS = 510 SS = 414 Use a one-tailed test with α = .01. The t-statistic is
ages of a variation than ages of females in the general population, so let o = 18.4 years for the sample size calculation. How many female statistics student ages must be obtained in order to estimate the mean age of all female statistics students? Assume that we want 98% confidence that the sample mean is within one-half year of the population mean. Does it seem reasonable to assume that the ages of female statistics students have less variation than ages of females in the general population? The group of 137 randomly selected adult females have a standard deviation of 18.4 years. Assume that the ages of female statistics students have less The required sample size is. (Round up to the nearest whole number as needed.)
(a) State the null hypothesis H0 and the alternative hypothesis H1 . H0: H1: (b) Determine the type of test statistic to use. ▼(Choose one) (c) Find the value of the test statistic. (Round to three or more decimal places.) (d) Find the p-value. (Round to three or more decimal places.) (e) Can we support the claim that the mean completion time of Fundash is not equal to the mean completion time of Coolsprint? Yes No
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ch.8 confidence interval mean A researcher is interested in finding a 98% confidence interval for the mean number minutes students are concentrating on their professor during a one hour statistics lecture. The study included 144 students who averaged 37.5 minutes concentrating on their professor during the hour lecture. The standard deviation was 11.3 minutes. b. With 98% confidence the population mean minutes of concentration is between (round to 3 decimal places) _____ and _____ minutes. c. If many groups of 144 randomly selected members are studied, then a different confidence interval would be produced from each group. About _____ percent of these confidence intervals will contain the true population mean minutes of concentration and about _______ percent will not contain the true population mean minutes of concentration.

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