Favors Distribution Company purchases small imported trinkets in bulk, packages them, and sells themto retail stores. The managers are conducting an inventory control study of all their items. The followingdata are for one such item, which is not seasonal.234516710 11 12Month JanFebMarAprMayJunJulAugSepOct Nov DecSales 51555457506866596769 75 73a. Use a trend projection to estimate the relationship between time and sales (state the equation)[ Select ]b. What is the forecast for next January? [Select ]c. What is the forecast for next April? [Select ]d. What is the MAD for this forecast? [Select ]e. What is the MSE? [Select ]f. What is the Correlation Coefficient? [ Select ]

Linear trend y = a+bx a = intercept b = slope x = time period y = forecast for demand for period x

Answered: Favors Distribution Company purchases…

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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A well known psychology graduate program claims that their Ph.D graduates get higher paying jobs than the national average. Last year’s figures for salaries paid to all graduates with D in Psychology on their first job showed a mean of P620.00 per hour. A random sample of 10 graduates from last year’s class showed the following hourly salaries for their first job. P540 P630 P720 P680 P640 P570 P580 P660 P670 P690 What can you conclude about the psychology graduate program’s claim? Show your complete computation and then answer the question
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The table below shows average tuition and fees charged by American colleges and universities as well as federal student assistance for the years 1995 to 2005. Let x represent the number of years since 1995. Use the data in the table to answer the follwoing qestions. Year 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 tuition/fees public ($) 2057 2179 2271 2360 2430 2506 2562 2700 2903 3319 3629 tuition/fees private ($) 11111 11864 12498 12801 13428 14081 15000 15742 16383 17327 18154 federal assistance (million $) 35477 38865 40074 43072 40162 44007 48582 55525 62275 69053 72112 Step 1: Calculate the percentage of increase for the private college and university tuition and fees from1995 to 1999. Enter your answer inside the box below and round the answer to the nearest whole number. Calculate the percentage of increase for the private college and university tuition and fees from 2000 to 2005. Enter your answer inside the box below and round the answer to the…
The following data represent the monthly phone use, in minutes, of a customer enrolled in a fraud prevention program for the past 20 months. The phone company decides to use the upper fence as the cutoff point for the number of minutes at which the customer should be contacted. What is the cutoff point? 491 413 455 344 468 347 424 487 373 328 411 509 547 313 470 502 348 328 514 488 The cutoff point is minutes. (Round to the nearest minute.)
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A domestic manufacturer of watches purchases quartz crystals from a Swiss firm. Thecrystals are shipped in lots of 1000. The acceptance sampling procedure uses 20 randomlyselected crystals.a. Construct operating characteristic curves for acceptance numbers of 0, 1, and 2.b. If p0 is .01 and p1 = .08, what are the producer’s and consumer’s risks for each sampling plan in part (a)?
Amie Jackson, a manager at Sigma travel services, makes every effort to ensure that customers attempting to make online reservations do not have to wait too long to complete the reservation process. The travel website is open for reservations 24 hours a day, and Amie regularly checks the website for the waiting time to maintain consistency in service. She uses the following independently drawn samples of wait time during two peak hours, morning 8 a.m. to 10 a.m. and evening 7 p.m. to 9 p.m., for the analysis. Assume that wait times are normally distributed. Wait Time (in seconds) Morning hours 8 a.m. to 10 a.m. 97 101 115 107 129 98 96 132 118 104 123 128 95 127 112 Evening hours 7 p.m. to 9 p.m. 95 92 89 90 102 96 85 81 84 100 97 80 98 79 99 At the 10% significance level, which of the following is the correct conclusion? Do not reject H0. We conclude that the variance of wait time during morning peak hours differs from that during the evening peak hours. Reject H0. We…
Amie Jackson, a manager at Sigma travel services, makes every effort to ensure that customers attempting to make online reservations do not have to wait too long to complete the reservation process. The travel website is open for reservations 24 hours a day, and Amie regularly checks the website for the waiting time to maintain consistency in service. She uses the following independently drawn samples of wait time during two peak hours, morning 8 a.m. to 10 a.m. and evening 7 p.m. to 9 p.m., for the analysis. Assume that wait times are normally distributed. Wait Time (in seconds) Morning hours 8 a.m. to 10 a.m. 97 101 115 107 129 98 96 132 118 104 123 128 95 127 112 Evening hours 7 p.m. to 9 p.m. 95 92 89 90 102 96 85 81 84 100 97 80 98 79 99 A 90% confidence interval is found to be [1.19, 7.36], where the morning is the first group and the evening is the second group. Which of the following is the correct conclusion? Multiple Choice We can conclude the…
A company implemented a new sales management software program, hoping it will reduce the amount of time sales people spend on their computers. A sample of sales personnel computer usage before and after the new software implementation is provided below (also available for download here Computer.xlsx). At a 1% level of significance, can you conclude that the new software has reduced the amount of time sales people spend on their computers? YOU CAN ASSUME THE POPULATION TO BE NORMALLY DISTRIBUTED. Time Spent on Computer Employee ID Before New Software (hrs/wk) After New Software (hrs/wk) 91416 2.5 2 99305 5 5 82797 2.5 2.5 30838 6 6.5 13294 5 5 26278 9 8 74905 10 10 82358 7.5 8.5 79299 11 10.5 10243 6.5 5.5 21362 2 1 52331 8.5 8 86984 4 4 58264 4.5 5 56656 6.5 6 14778 4 4 70413 8.5 8 71094 6 7 83598 11 12 97170 3 3 20813 11 11 67218 8.5 8.5 24945 5.5 4.5 92186 3 3 84339 5 4 89381 6.5 6 41627 5.5 4.5 84214 10 9 98679 2 3…
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