TYPEWRITTEN ONLY PLEASE FOR UPVOTE. DOWNVOTE FOR HANDWRITTEN. DO NOT ANSWER IF YOU ALREADY ANSWERED THIS. I'LL DOWNVOTE. b) Given the following data:MonthSalesMonthSales25.031.029.033.034.0JulyAugustSeptember 38.0OctoberNovemberDecemberJanuaryFebruaryMarch35.032.0AprilMayJune1 140.037.037.032.0Required:• With a six-month warm-up sample, determine monthly forecasts using:Naive ModelThree-month Moving AverageWeighted AverageExponential Smoothing ( a = 0.40)Linear Regressioni.ii.ii.iv.V.For each models above, calculate:i.MAD

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Answered: b) Given the following data: Month…

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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The Tampa Bay (Florida) Area Chamber of Commerce wanted to know whether the mean weekly salary of nurses was larger than that of school teachers. To investigate, they collected the following information on the amounts earned last week by a sample of school teachers and nurses. School Teachers ($) 1,095 1,076 1,077 1,125 1,034 1,059 1,052 1,070 1,079 1,080 Nurses ($) 1,091 1,140 1,071 1,021 1,100 1,109 1,075 1,079 Is it reasonable to conclude that the mean weekly salary of nurses is higher? Use the 0.01 significance level. Hint: For the calculations, assume the nurses as the first sample. State the decision rule. (Negative values should be indicated by a minus sign. Round your answers to 3 decimal places.) Compute the value of the test statistic. (Round your answer to 3 decimal places.)
The Tampa Bay (Florida) Area Chamber of Commerce wanted to know whether the mean weekly salary of nurses was larger than that of school teachers. To investigate, they collected the following information on the amounts earned last week by a sample of school teachers and nurses. School Teachers ($) 1,095 1,076 1,077 1,125 1,034 1,059 1,052 1,070 1,079 1,080 Nurses ($) 1,091 1,140 1,071 1,021 1,100 1,109 1,075 1,079 Is it reasonable to conclude that the mean weekly salary of nurses is higher? Use the 0.01 significance level. Hint: For the calculations, assume the nurses as the first sample.
a) Is the dealer's mean significantly greater than the national average of 30,043 miles for 2-year leases? Using the 10 percent level of significance, choose the appropriate hypothesis. H0: μ ≤ 30,043 miles vs. H1: μ > 30,043 miles, reject H0 if tcalc > 1.3250 H0: μ ≥ 30,043 miles vs. H1: μ > 30,043 miles, reject H0 if tcalc > 1.3250 H0: μ ≤ 30,043 miles vs. H1: μ < 30,043 miles, reject H0 if tcalc > 1.3250 H1: μ ≤ 30,043 miles vs. H0: μ > 30,043 miles, reject H0 if tcalc > 1.3250 d a b c (b) Calculate the test statistic. (Round your answer to 2 decimal places.) Test statistic ________ (c) The dealer's cars show a significantly greater mean number of miles than the national average at the 10 percent level. No Yes
The age of retirement for professional sports players (from different sports) has been summarized in a contingency table that provides a joint frequency distribution.
Estimate the ASN curve for the plan derived in the attached problem. According to your curve, what is the expected number of microprocessors that must be tested when the true proportion of defectives in the lot isa. 0.1 percent?b. 1.0 percent?c. 10 percent?
What is the probability that the sampling error made in estimating the population mean loan amount by the mean loan amount of a simple random sample of 200 loans will be at most $1 million?
. Explain the following termsa) Multi-phase samplingb) Multi-stage samplingc) Sampling frame
The Hate Crime Statistics Act of 1990 requires the Attorney General to collect national data about crimes that manifest evidence of prejudice based on race, religion, sexualorientation, or ethnicity, including the crimes of murder and non-negligent manslaughter,forcible rape, aggravated assault, simple assault, intimidation, arson, and destruction, dam-age, or vandalism of property. The Hate Crime Data collected in 2005 reveals, based on arandomly selected sample of 500 incidents, that the mean number of victims in a particulartype of hate crime was 2.65, with a standard deviation of 1.22. Assuming that the numberof victims wasnormally distributed, answer the following questions. a) What proportion of crime incidents had more than three victims? b) What is the probability that there was more than one victim in an incident? c) What proportion of crime incidents had less than four victims? d) Construct and interpret an estimate of the population at the 95% level.
Shushanna Tovmasyan, a consumer analyst collected the following data on the screen sizes of popular LCD televisions sold recently at a large retailer: Manufacturer Screen Price Sharp 46 $1,473.00 Samsung 52 2300 Samsung 46 1790 Sony 40 1250 Sharp 42 1546.5 Samsung 46 1922.5 Samsung 40 1372 Sharp 37 1149.5 Sharp 46 2000 Sony 40 2100 Sony 52 2615 Samsung 32 890.2 Sharp 37 1314.5 Sharp 32 853.5 Sharp 52 2778 Samsung 40 1749.5 Sharp 32 1035 Samsung 52 3100 Sony 40 1954 Sony 52 3210 Sony 46 2701 Sony 46 2899 Sony 52 4100 Samsung 46 1922.5 Samsung 40 1755 Sharp 37 1258 Sharp 46 2210 Samsung 40 785.2 Sharp 41 1500 Sharp 30 855 Sharp 55 3000 Leave your answer in 3 decimal places The coefficient of determination is and correlation…
The Tampa Bay (Florida) Area Chamber of Commerce wanted to know whether the mean weekly salary of nurses was larger than that of school teachers. To investigate, they collected the following information on the amounts earned last week by a sample of school teachers and nurses. School teachers ($) 845 826 827 875 784 809 802 820 829 830 842 832 Nurses ( $ ) 841 890 821 771 850 859 825 829 Is it reasonable to conclude that the mean weekly salary of nurses is higher? Use the .01 significance level. Hint: For the calculations, assume the nurses as the first sample. This is a (Click to select) one two -tailed test. 2. The decision rule is to reject H0H0 if t is (Click to select) less than equal to greater than (Round your answer to 3 decimal places.) 3. The test statistic is t = . (Round your answer to 3 decimal places.) 4. What is your decision regarding H0H0 ? (Click to select) Do not reject. OR Reject.…
You intend to estimate a population mean μμ from the following sample. 30.9 20.3 35 35.3 42.4 25.4 47.8 55.5 51.2 46.6 66 27.2 33.2 33.2 35.6 31.4 17.4 48 19.7 22.6 55.7 10.4 36.4 13.2 24.4 49.7 28.7 44.5 50.6 45.5 15.4 21.7 14.8 63.3 41.2 44.1 10.6 30.2 30.4 44.1 29.6 Hint: Use the ONE QUANTITATIVE Calculator to find the Mean and Sample Standard Deviation of the data set.Find the 99.5% confidence interval.Enter your answer as a tri-linear inequality accurate to two decimal places (because the sample data are reported accurate to one decimal place). _______< μ <____ Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.I don’t understand this question and help me please
CONSTRUCT A FREGUENCY DISTRIBUTION TABLE WITH A GIVEN DATA BELOW:

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