Answer:
Cluster sampling
Explanation:
Cluster sampling is a type of sampling in which a population is divided into groups and one whole group from the division is randomly with every member of the chosen group involved.
As in thr question, the phone number listings have been divided into groups of 400 and her name came up in the first group of the listing divisions to be considered, hence her selection.
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Answer:
The answer is: ALL THE OPTIONS ARE WRONG
Explanation:
A) In the short run, the firm will shut down if the price of its product is < $12.
B) In the long run, the firm will shut down if the price of its product is < $15.
C) The minimum value of variable cost equals the variable cost of producing 1 single unit, not the variable cost of producing 200 units.
D) If the firm's fixed costs are $500, it means that they decreased. According to the question the fixed costs were $690 (230 units x $3 per unit). So if the fixed costs decrease, then the average total cost should also decrease, not increase to $16.
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Answer:
c. The beta of the portfolio is equal to the weighted average of the betas of the individual stocks.
Explanation:
The portfolio beta which is a measure of the systematic risk for a portfolio is calculated by taking the weighted average of betas of all the individual stocks that form up the portfolio. So the statement stating that the portfolio beta is equal to weighted average of individual stock betas is correct.
