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- in a restaurant, 40% of the costumer ordered a pizza. 40% of the costumer ordered...

- in a restaurant, 40% of the costumer ordered a pizza. 40% of the costumer ordered salad ot soup. If 50% of the costumer ordered pizza after they ordered salad or soup, what is the probability that a randomly selected a costumer will order pizza and salad or soup?

- the length of time to make a device is normally distributed with mean = 6.7 min and standard deviation = 2.2 min. At random, what is the probability of the time will be at least 10 minutes?

- if 16 devices are selected at random, what is the probability that their average is no more than 5 minutes?
Math   Statistics-And-Probability   
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