X + 6 for <1 f(x) = -5 for X = 19 X + 4 for Find f(1)
1 answer:
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Answer: C) 0.8664.
Step-by-step explanation:
Given, The tread life of tires mounted on light-duty trucks follows the normal probability distribution with .
Let be the sample mean tire life of any 4 tires.
Now , the probability that the mean tire life of these four tires is between 57,000 and 63,000 miles will be :-
For Very likely , the probability should lie between 0.95 and 1.
Hence, the correct answer is C) 0.8664.