Introductory Statistics
Let x be a random variable
representing dividend yield of Australian bank stocks. We may assume that x has
a normal distribution with f$sigma f$ = 2.8%. A random sample of 16 Australian
bank stocks has a sample mean dividend yield of 8.91%. For the entire
Australian stock market, the mean dividend yield is f$mu f$ = 6.4%. If you
wanted to test to determine if these data indicate that the dividend yield of
all Australian bank stocks is higher than 6.4%, what is the value of the test
statistic? Place your answer, rounded to 3 decimal places, in the blank. For
example, 2.345 would be a legitimate entry.
A certain system has two
components. There are 10 different models of the first component and 10
different of the second. Any first component can be paired with any second
component. A salesman must select 2 of the first component and 3 of the second
to take on a sales call. How many different systems can the salesman select?
Place your answer in the blank. Do NOT use commas. For example, 2350 would be a
legitimate response.
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