1. When the p-value is used for
hypothesis testing, the null hypothesis is *rejected*
if

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2. Which of the following does
** ***not* need
to be known in order to compute *the p-value*?

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3. If a hypothesis is *not
rejected* at the *5%*
level of significance, it

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** 36
observations** with

** sample
deviation 12** for testing

**Ho:
£g¡Ø20 v.s. Ha: £g>20**

(a) The standardized test statistic ** z**
equals

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(b) The *p-value*
is

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(c) If the test is done at *95%
confidence*, *the null hypothesis*
should

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5. The manager of a 7-11 store has taken a random
sample of *100 customers.*

* The average
length of time* it took the customers in the sample to check
out was

* 3.1 minutes*
with

whether or not the mean waiting time of all customers
is *significantly more than 3 minutes.
*

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(a)** The standarized
test statistic** is

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(b) *The
p-value* is

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(c) At *95%
confidence*, it can be concluded that *the
mean* of the population is

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6. For a one-tailed test (upper tail) with a sample
size of ** 900**, the null
hypothesis will

be rejected at**
95% confidence** if

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