Question

In the regression equation y = -1.2x + 102.45, x represents the number of cloudy school days and y represents the percent of school attendance on those days. Predict the per cent of school attendance during a month with 18 cloudy days. A) 78.52% B) 80.85% C) 90.36% D) 93.47%

Answer 1

Answer:

B.80.85%

Step-by-step explanation:

The equation shows that the percent of school attendance depends on cloudy days, in a negative way, which means that the more cloudy days, the less the percentage of students that go to school.

• Particular, when there are 18 cloudy days, x takes a value of 18, x=18,
• This means that y= -1.2 (18) + 102.45 which equals 80.85%.