## Introductory Statistics 9th Edition

Μ=16, σ=0.18 a. $P(16.20 \leq x \leq 16.50 )$ = $P(\frac{16.20-16}{0.18} \leq z \leq \frac{16.50-16}{0.18})$ =$P(1.1111\leq x \leq 2.7778 )$ =0.9973-0.8667= 0.1306 b. $P(x \lt 15.70 )$ = $P(z \lt \frac{15.70-16}{.18} )$ = $P(z \lt -1.6667 )$ = 0.0478 0.0478*100 = 4.78% c. $P(x \lt 15.20 )$ = $P(z \lt \frac{15.20-16}{.18} )$ = $P(z \lt -4.4444 )$ = 0 It is impossible to be 15.20 ounces, because the probability shown is 0.