Question: 19. If the null hypothesis is rejected at the10% level of significance, it _____ at the1% level. a) will always not be rejected b) may

19.

If the null hypothesis is rejected at the10% level of significance, it _____ at the1% level.

a) will always not be rejected

b) may be rejected or not rejected

c) will never be tested

d) will always be rejected

22.

The time between arrivals of customers at the drive-up window of a bank follows an exponential probability distribution with a mean of 10 minutes. (Round your answers to four decimal places.)

(a)

What is the probability that the arrival time between customers will be6minutes or less?

(b)

What is the probability that the arrival time between customers will be between4and6minutes?

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