The student government claims that 80% of all students favor an increase in student fees to buy indoor potted plants for the classrooms. A random sample of 10 students produced 2 in favor of the project. Required:
a. What is the probability that 2 or fewer in the sample will favor the project, assuming the student government's claim is correct?
b. Do the the data support the student government's claim, or does it seem that the percentage favoring the increase in fees is less than 85%?

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correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,