In a study focusing on the growth patterns of a particular s…

In a study focusing on the growth patterns of a particular species of sunflowers, it was found that the heights of these sunflowers are normally distributed with an average height of 64 inches and a standard deviation of 4.5 inches. What percentage of sunflowers in this study are expected to be shorter than 68.5 inches? (Use the empirical rule.)

In a particular region, meteorologists have been studying hi…

In a particular region, meteorologists have been studying historical rainfall patterns to understand the climate changes over the past centuries. Data from various locations in the region provided a mean annual rainfall of 1,302 mm with a standard deviation of 23 mm. The distribution of rainfall was mound-shaped and symmetrical about the mean. Utilizing the empirical rule, estimate the range of rainfall centered around the mean in which approximately 68% of the data (rainfall) are likely to be found.

A portfolio contains the following bonds:                  …

A portfolio contains the following bonds:                                                                                Bond        Market Value        Duration                                          (In $ millions)                                A                     $[x]                        [y]                        B                     $18                         4                        C                     $20                         3                                                                If the market rate of interest rises from 8% to 8.5%, calculate the amount of change in the Market Value of the portfolio.                                        Express the result in dollars and cents.