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The regression equation y=−0.414x+106.55 approximates the percent of people in an audience who finish watching a documentary, y, given the length of the film in minutes, x.

Which percent is the best prediction for the percent of people in an audience who will finish watching a documentary that is 115 minutes long?

Responses

92%

48%

8%

59%

2 Answers

3 votes

Answer:59%

Step-by-step explanation:

User Shadowman
by
9.2k points
2 votes

Answer: 59% (choice D)

=======================================================

Step-by-step explanation:

x = length of the documentary (in minutes)

y = percent of people who finish watching the documentary

We plug in x = 115 to estimate y

y = -0.414*x + 106.55

y = -0.414*115 + 106.55

y = 58.94

y = 59%

We estimate approximately 59% of the viewers will finish watching a documentary if it is 115 minutes long.

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Side note:

115 min = 60 min + 55 min = 1 hour + 55 min

In other words, this movie is 5 minutes short of 2 full hours (120 min).

User Ahaurat
by
7.2k points
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