According to a survey conducted by the Canadian Federation of Independent Business (CFIB), it costs an average of $1,500 per employee for Quebec businesses with 20 to 49 employees to comply with various legislation such as the Income Tax Act. legislation such as the Income Tax Act. We randomly select 36 firms with between 20 and 49 employees. The standard deviation of compliance costs is assumed to be $120 and the average cost for all firms with 20 to 49 employees is assumed to be the above. What is the probability that the sample mean is less than 1520?

- 0,1587 - 0.6915 - 0,5000 - 0.3085 - 0.9332 - 0,8413 - 0,0668