Social Website Popularity: Delicious The following table shows the popularity of Delicious among social media sites as rated by StatCounter.com ( t is the number of years since the start of 2008 ) : 8 Year t (year since start of 2008) 1 2 3 4 5 Delicious Popularity p ( t ) (%) 0.4 0.2 0.1 0.05 0.02 a. Represent p graphically, and then use your graph to estimate p ( 3.5 ) . Interpret your answer. b. One of the following models fits the data exactly. Which model is it? (A) p ( t ) = 0.8 ( 2 − t ) (B) p ( t ) = 0.8 ( 2 t ) (C) p ( t ) = 0.02 t 2 − 0.2 t + 0.6 (D) p ( t ) = − 0.02 t 2 + 0.2 t − 0.6
Social Website Popularity: Delicious The following table shows the popularity of Delicious among social media sites as rated by StatCounter.com ( t is the number of years since the start of 2008 ) : 8 Year t (year since start of 2008) 1 2 3 4 5 Delicious Popularity p ( t ) (%) 0.4 0.2 0.1 0.05 0.02 a. Represent p graphically, and then use your graph to estimate p ( 3.5 ) . Interpret your answer. b. One of the following models fits the data exactly. Which model is it? (A) p ( t ) = 0.8 ( 2 − t ) (B) p ( t ) = 0.8 ( 2 t ) (C) p ( t ) = 0.02 t 2 − 0.2 t + 0.6 (D) p ( t ) = − 0.02 t 2 + 0.2 t − 0.6
Social Website Popularity: Delicious The following table shows the popularity of Delicious among social media sites as rated by StatCounter.com
(
t
is the number of years since the start of 2008
)
:
8
Year t(year since start of 2008)
1
2
3
4
5
Delicious Popularity
p
(
t
)
(%)
0.4
0.2
0.1
0.05
0.02
a. Represent p graphically, and then use your graph to estimate
p
(
3.5
)
. Interpret your answer.
b. One of the following models fits the data exactly. Which model is it?
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