Question: Data are drawn from a bell-shaped distribution with a mean of 140 and a standard deviation of 4. There are 950 observations in the data

Data are drawn from a bell-shaped distribution with a mean of 140 and a standard deviation of 4. There are 950 observations in the data set.

a.Approximately what percentage of the observations are less than 148?

b. What rule did you use to find this out and why?

c.Approximately how many observations are less than 148?

d. Using the above information, find the z score where x is 160. What does the final answer mean?

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