At the End of 1990,1991,and 1992 the Average Prices of a Share

question 72

Multiple Choice

At the end of 1990,1991,and 1992 the average prices of a share of stock in a money market portfolio were $34.83,$34.65 and $31.26 respectively.To investigate the average share price at the end of 1993,a random sample of 30 stocks was drawn and their closing prices on the last trading day of 1993 were observed with a mean of 33.583 and a standard deviation of 19.149.Assuming that stock prices are normally distributed,a 90% confidence interval would be _____.

• A)[27.643,39.523]
• B)[26.732,40.434]
• C)[32.514,34.651]
• D)[32.533,34.633]
• E)[32.269,34.897]

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Definitions:

Phenotypes

The visible attributes or qualities of an organism that arise from the interplay between its genetic makeup and environmental factors.

Genotypes

The genetic makeup of an organism, consisting of all the inherited alleles that influence traits and characteristics.

Monozygotic Twins

Identical twins resulting from a single fertilized egg splitting into two, sharing the exact genetic makeup.

Secondary Sex Characteristics

are features that distinguish the two sexes of a species, but are not directly involved in reproduction, such as body hair or voice pitch.