Supermarket 99 claim that the mean amount spent by a customer is less than $5 at the 0.05 level of

significance. A random sample of 34 customers had spent a mean of $4.43 and a standard deviation

of $3.23. Perform the test by writing down the steps.

(Note that the claim is the alternate hypothesis, so our conclusion will be either to support the claim

or fail to support the claim. Also note that the alternate hypothesis involves the symbol <. This tells

us that our test is a left-tailed test.)