Question: Refer to Examples 8.1 and 8.2. Use the data in Table 8.1 on page 305 to obtain a 99.74% confidence interval for the mean price

Refer to Examples 8.1 and 8.2.
Use the data in Table 8.1 on page 305 to obtain a 99.74% confidence interval for the mean price of all new mobile homes.
(Proceed as in Example 8.2, but use the "99.74" part of the 68.26-95.44-99.74 rule instead of the "95.44" part.)

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