Find the z value to the right of the mean

Reference no: EM13205209

1) Find the z value to the right of the mean such that 85% of the total area under the standard normal distribution curve lies to the left of it?

2)If 7.5% of teh bolts made by an automotive factory and defective, what is the probability that in a shipment of 20 bolts, there are 6 defective bolts?

3) The average hourly wage of workers at a fast food restaurant is $6.50/hr. Assume the wages are normally distributed with a standard deviation of $0.45. If a worker at this fast food restaurant is selected at random, what is the probability that the worker earns more than $6.75?

Reference no: EM13205209

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