A study of n = 26 hospital employees who were diagnosed with a latex allergy from exposure to the powder on latex gloves was perform. The number of latex gloves used per week by the sample of workers is summarized as follows: sample mean = 19.3, sample standard deviation = 11.9 Test the claim that the population mean number of latex gloves used per week by all hospital employees is less that 20. Use Critical value method and a1% level of significance.

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