For Each of the Following Situations Related to Determining the Average

Short Answer

For each of the following situations related to determining the average weight of a National Football League player,indicate how the appropriate sample size would change by using the letter I (increase),D (decrease),or N (no change).Assume that all other factors are held constant.
1___.The desired level of precision changes from 20 pounds to 10 pounds.
2___.The sampling risk increases from 5 percent to 10 percent.
3___.The number of football players in the population increases from 1,400 to 1,600.
4___.You initially want to estimate the weight for offensive linemen only but decide to include quarterbacks,running banks,and placekickers.
5___.Your initial sample estimate changes from 250 pounds to 230 pounds.