Demand for stereo headphones and MP3 players for joggers has caused Nina Industries to grow almost 50 percent over the past year. Problem 18-14 (Algo) he number or joggers continues to expand, 5o Nina expects demand for headsets to also expand, because, as yet, no safety laws Tiave been passed to prevent joggers from wearing them. Demand for the players for last year was as follows. MONTH DEMAND (UNITS) January February 4,115 4,215 3,915 4,315 4,915 4,615 5,215 Harch April May June July August September October November 4,815 5,315 5,615 6,215 5,915 December a. Using linear regression analysis. what would you estimate demand to be for each month next year? (Do not round intermediate calculations. Round your answers to 2 decimal places.) Month Forecast January February March April May June July August September October November December b. To be reasonably confident of meeting demand. Nina decides to use 4 standard errors of estimate for safety. How many additional units should be held to meet this level of confidence? (Do not round intermediate calculations. Round your answer to the nearest whole number.) Additional units
Demand for stereo headphones and MP3 players for joggers has caused Nina Industries to grow almost 50 percent over the past year. Problem 18-14 (Algo) he number or joggers continues to expand, 5o Nina expects demand for headsets to also expand, because, as yet, no safety laws Tiave been passed to prevent joggers from wearing them. Demand for the players for last year was as follows. MONTH DEMAND (UNITS) January February 4,115 4,215 3,915 4,315 4,915 4,615 5,215 Harch April May June July August September October November 4,815 5,315 5,615 6,215 5,915 December a. Using linear regression analysis. what would you estimate demand to be for each month next year? (Do not round intermediate calculations. Round your answers to 2 decimal places.) Month Forecast January February March April May June July August September October November December b. To be reasonably confident of meeting demand. Nina decides to use 4 standard errors of estimate for safety. How many additional units should be held to meet this level of confidence? (Do not round intermediate calculations. Round your answer to the nearest whole number.) Additional units
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
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
Transcribed Image Text:Demand for stereo headphones and MP3 players for joggers has caused Nina Industries to grow almost 50 percent over the past year.
Problem 18-14 (Algo)
he number or joggers continués to expand, 50 Nina expects demand for headsets to also expand, because, as yet, no safety laws
Tiove been passed to prevent joggers from wearing them. Demand for the players for last year was as follows:
MONTH
DEMAND (UNITS)
January
February
Harch
4,115
4,215
3,915
4,315
4,915
4,615
5,215
April
May
June
July
August
September
October
November
4,815
5,315
5,615
6,215
5,915
December
a. Using linear regression analysis. what would you estimate demand to be for eath month next year? (Do not round intermediate
calculations. Round your answers to 2 decimal places.)
Month
Forecast
January
February
March
April
May
June
July
August
September
October
November
December
b. To be reasonably confident of meeting demand, Nina decides to use 4 standard errors of estimate for safety. How many additional
units should be held to meet this level of confidence? (Do not round intermediate calculations. Round your answer to the nearest
whole number.)
Additional units
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