Q.6.2 The financlal manager of a natlonal warehouse chaln has found from prevlous experlence that 45% of clients pay by credit card, 35% pay on account, whille the remainder pay using cash. He wishes to know if this is still the case. A random sample of 1000 sales receipts from the last month produced the following results: Payment Method Credit Card Account Cash Total Number of receipts 500 315 185 1000 Using a 1% significance level, test whether the payment method pattern has changed. Q.6.3 The table given below Indicates Small Holding Ltd.'s quarterly profits In 2019 and 2020. Time Period Profit (Thousands Of Rands) 2019 Q1 250 2019 Q2 210 2019 Q3 165 2019 Q4 195 2020 Q1 265 2020 Q2 218 2020 Q3 178 2020 Q4 204 Q.6.3.1 Determine the trend regression function for this data set. In order to (9) obtain full marks for this question, you must complete the relevant table (template provided below) and then apply the appropriate time series formulae in the formulae sheet. Period Profits (y) Time (x) xy Q.6.3.2 Given that the typical seasonal index for Q3 is 87.3, use this information (3) and the trend regression function obtained in Q.6.3.1 to determine the seasonally adjusted trend estimate for profits in 03 of 2022.
Q.6.2 The financlal manager of a natlonal warehouse chaln has found from prevlous experlence that 45% of clients pay by credit card, 35% pay on account, whille the remainder pay using cash. He wishes to know if this is still the case. A random sample of 1000 sales receipts from the last month produced the following results: Payment Method Credit Card Account Cash Total Number of receipts 500 315 185 1000 Using a 1% significance level, test whether the payment method pattern has changed. Q.6.3 The table given below Indicates Small Holding Ltd.'s quarterly profits In 2019 and 2020. Time Period Profit (Thousands Of Rands) 2019 Q1 250 2019 Q2 210 2019 Q3 165 2019 Q4 195 2020 Q1 265 2020 Q2 218 2020 Q3 178 2020 Q4 204 Q.6.3.1 Determine the trend regression function for this data set. In order to (9) obtain full marks for this question, you must complete the relevant table (template provided below) and then apply the appropriate time series formulae in the formulae sheet. Period Profits (y) Time (x) xy Q.6.3.2 Given that the typical seasonal index for Q3 is 87.3, use this information (3) and the trend regression function obtained in Q.6.3.1 to determine the seasonally adjusted trend estimate for profits in 03 of 2022.
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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Transcribed Image Text:Q.6.2
The financlal manager of a natlonal warehouse chaln has found from prevlous
experlence that 45% of clients pay by credit card, 35% pay on account, whille
the remainder pay using cash. He wishes to know if this is still the case. A
random sample of 1000 sales receipts from the last month produced the
following results:
Payment Method
Credit Card
Account
Cash
Total
Number of receipts
500
315
185
1000
Using a 1% significance level, test whether the payment method pattern has
changed.
Transcribed Image Text:Q.6.3
The table given below Indicates Small Holding Ltd.'s quarterly profits In 2019 and
2020.
Time Period
Profit (Thousands Of Rands)
2019 Q1
250
2019 Q2
210
2019 Q3
165
2019 Q4
195
2020 Q1
265
2020 Q2
218
2020 Q3
178
2020 Q4
204
Q.6.3.1
Determine the trend regression function for this data set. In order to
(9)
obtain full marks for this question, you must complete the relevant
table (template provided below) and then apply the appropriate time
series formulae in the formulae sheet.
Period
Profits (y)
Time (x)
xy
Q.6.3.2
Given that the typical seasonal index for Q3 is 87.3, use this information
(3)
and the trend regression function obtained in Q.6.3.1 to determine the
seasonally adjusted trend estimate for profits in 03 of 2022.
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