Fifty pro-football rookies were rated on a scale of 1 to 5, based on performance at a training camp as well as on past performance. A ranking of 1 indicated a poor prospect whereas a ranking of 5 indicated an excellent prospect. The following frequency distribution was constructed. Rating Frequency 1 3 2 7 3 16 4 21 5 3 a-1. How many of the rookies received a rating of 4 or better? Number of Rookies?
a-2. How many of the rookies received a rating of 2 or worse? Number of Rookies_?
b-1. Construct the corresponding relative frequency distribution. (Round your answers to 2 decimal places.) RatingRelative Frequency 1 2 3 4 5 Total
b-2. What percent received a rating of 5? Percentage of rookies_?

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.

$54.99

step-by-step explanation:

$54.99 includes 500 min. if she does not exceed 500 min then her bill is $54.99