he National Football League (NFL) polls fans to develop a rating for each football game. Each game is rated on a scale from 0 (forgettable) to 100...

he National Football League (NFL) polls fans to develop a rating for each football game. Each game is rated on a scale from 0 (forgettable) to 100 (memorable). The fan ratings for a random sample of 12 games follow.

58 62 86 75 72 73

21 57 79 80 83 73

a. Develop a point estimate of mean fan rating for the population of NFL games (to 2 decimals).

b. Develop a point estimate of the standard deviation for the population of NFL games (to 4 decimals).