(ANSWER) MATH 225N WEEK 5 ASSIGNMENT: UNDERSTANDING THE EMPIRICAL RULE - Essay Prowess
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# (ANSWER) MATH 225N WEEK 5 ASSIGNMENT: UNDERSTANDING THE EMPIRICAL RULE

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Question

1. Suppose a random sample of biweekly snowfalls in the pacific northwest has a sample mean of x¯=22.2 inches, with a sample standard deviation of s=3.5 inches. Since snowfall amounts in this area are generally symmetric and bell-shaped, we can apply the Empirical Rule.

Between what two amounts are approximate 99.7% of the data?

4)

## Question

A random sample of Statistics final exam scores has a sample mean of x¯=65 and a sample standard deviation of s=11.  Use the Empirical Rule to estimate the approximate percentage of final exam scores that are less than 54.