..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: 1 2 3 4 5
Frequency: 7 11 10 19 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 decimal places.)
Rating —Relative Frequency
1 —————?
2 —————?
3 —————?
4 —————?
5 —————?
b-2. What percent received a rating of 5? Percentage of rookies %

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