As part of a class project a teacher brings a large jar containing 200 gum balls of 2 different colors, white and green to class. A student draws a sample of 20 gum balls, of which 4 are white and 16...

As part of a class project a teacher brings a large jar containing 200 gum balls of 2 different colors, white and green to class. A student draws a sample of 20 gum balls, of which 4 are white and 16 are green. The students job is to estimate how many of the gum balls are white.
A.) Use the sample to estimate the % of white gum balls in the jar.

B.) Give the sampling proportion as a %.

C.) If there were 60 white gum balls in the jar, give the parameter of white gum balls in the jar as a %.

D.) Give the sampling error as a percent.