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1. The owner of Limp Pines Resort wanted to know average age of its clients. A random sample of 25 tourists is taken. It shows the mean age of 46 yrs. with stand. dev. Of 5 yrs. The width of 98% Cl for the true mean cliet age is approximately..............yrs.

a.+or-2.06     b.+or-2.33      c.+or-2.49       d.+or-2.79

2. What sample size would be needed to estimate the true proportion of American female business executives who prefer the title "Ms.", with error of ±0.025 and 98 percent confidence?

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