4. A company pays an average of Php 100.00 per hour with a standard deviation of Php 15.00. If the pay for the employees is more or less distributed normally, find the following: a. Percentage of workers receiving less than Php 95.00; b. Percentage of workers receiving above Php 132.00; c. Percentage of workers whose pay is between Php 68.00 to Php 140; d. If the number of workers is 750, how many workers receiving a pay between Php 85.00 to Php 115.00.

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