A company has claimed that the standard deviation of the monthly incomes of their employees is less than or equal to $120. To test their claim, a random sample of 15 employees of the company was taken; and it was determined that the standard deviation of their incomes was $135. At a 5% level of significance, test the company's claim.

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The Answer of A company has claimed that the standard deviation of the monthly incomes of their employees is less than or equal to $120. To test their claim, a random sample of 15 employees of the company was taken; and it was determined that the standard deviation of their incomes was $135. At a 5% level of significance, test the company's claim.

A Company Has Claimed That the Standard Deviation of the Monthly