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M-JOY catering services, claims that the average charges for maintenance and repairs of catering equipment are P8, 760 a year. A sample of 60 repairs

M-JOY catering services, claims that the average charges for maintenance and repairs of catering

equipment are P8, 760 a year. A sample of 60 repairs has an average of P7, 880. The standard deviation of

the sample is P300. At = 0.05, Is there enough evidence to reject the M-JOY Catering's claim?

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