2. The prices of a sample of bonds have a mean value of 98.5 and a standard devi

Question

2. The prices of a sample of bonds have a mean value of 98.5 and a standard deviation of .5. If the sample has a bell-shaped distribution, what can we say about the proportion of bond prices that fall between 97.5 and 99.5 a) The interval contains approximately 68% of the prices b) The interval contains approximately 95% of the prices. c) The interval contains approximately 99.7% of the prices. d) The interval contains approximately 5% of the prices. e) The interval contains approximately 2.5% of the prices.

Explanation / Answer

as prices 97.5 and 99.5 fall 2 std deviation from mean therefore from empirical formula 95% values are between tem

option b is correct

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