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The following table represents the age distribution of workers in Sunshine Enterprise. a . Calculate the mean age of the workers in Sunshine Enterprise. b
The following table represents the age distribution of workers in Sunshine Enterprise. a Calculate the mean age of the workers in Sunshine Enterprise. b Calculate the standard deviation for the age. Damansara Rally Auto Service Centre provides oil and lubricant services for cars. It is known that the mean time taken for oil and lubricant services at this garage is minutes per car and the standard deviation is minutes. The management wants to promote the business by guaranteeing a maximum waiting time for its customers. If a customer's car is not serviced within that period, the customer will receive a discount on the charges. Assume that the times taken for oil and lube service for all cars have a normal distribution. Answer the following questions. a If the company wanted to limit this discount to at most of the customers. What should the maximum guaranteed waiting time be b What is the percentage that a randomly selected car serviced at this centre took more than minutes?
The following table represents the age distribution of workers in Sunshine Enterprise.
a Calculate the mean age of the workers in Sunshine Enterprise.
b Calculate the standard deviation for the age.
Damansara Rally Auto Service Centre provides oil and lubricant services for cars. It is known
that the mean time taken for oil and lubricant services at this garage is minutes per car and
the standard deviation is minutes. The management wants to promote the business by
guaranteeing a maximum waiting time for its customers. If a customer's car is not serviced
within that period, the customer will receive a discount on the charges. Assume that the
times taken for oil and lube service for all cars have a normal distribution. Answer the following
questions.
a If the company wanted to limit this discount to at most of the customers. What should
the maximum guaranteed waiting time be
b What is the percentage that a randomly selected car serviced at this centre took more
than minutes?
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