Answer
1) The proportion of refrigerators that last for more than 17 years is 0.1151.
2) The probability that a randomly select refrigerator last for more than 17 years is 0.1151
Work Step by Step
1) $\frac{refrigerators~that~last~for~more~than~17~years}{total~number~of~observed~rferigerators}=0.1151$
2) $P(X\gt17)=0.1151$
