We can reduce the margin of error in an interval estimate of p by doing any of the following EXCEPT:
a. increasing the sample size
b. reducing the confidence coefficient
c. using a planning value planning value closer to 0.5
d. increasing the level of significance

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step-by-step explanation:

d 25 pi/6

step-by-step explanation:

the diameter is 10 inches

the radius is 1/2 of the diameter or 5 inches

the area of the circle is

a = pi r^2

  = pi 5^2

  = 25 pi

the slice is 60 degrees of the entire circle.

60 degrees out of 360   60/360 = 1/6

the area of the slice is 1/6 of the circle

a slice = 1/6 a circle

a slice = 1/6 * 25 pi

y=5

step-by-step explanation: