تم الحل ✓
categoryإحصاء
schoolبكالوريوس
event_available2026-07-15
السؤال
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Question #1 [16 points]:
The population of an insect (YT) on a tree was recorded for five days from Monday to
Friday as follows: 2, 7, 9, 52, 80.
Assume that the growth follows the trend model: YT-aß ɛT where T=1, 2, 3, 4, 5 for
Monday, Tuesday...Friday, a and ẞ are parameter and ε error term.
(a) Write the model in the linear equation form.
(b) Compute the estimates of the parameters a and ẞ.
(c) Compute the point estimate of insect growth rate in percentage.
(d) Make forecast for Sunday and Monday.
(e) Give 95% prediction interval for the forecast of Sunday.
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