Question: I need the answer in Excel. Please help me. The following table contains 5-year quarterly sales information for the KYRYH product. Year Q1 Q2 Q3

I need the answer in Excel. Please help me.

The following table contains 5-year quarterly sales information for the KYRYH product.

Year

Q1

Q2

Q3

Q4

Total

2016

43000

37800

32300

40600

153700

2017

47000

37000

31200

40000

155200

2018

46000

39000

28000

40500

153500

2019

49000

42300

33500

44000

168800

2020

52700

44000

33600

45700

176000

a) Determine the demand for the year 2021 using the moving averages.

b) Comment on the validity of the model based on the 95% confidence level.

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