Answer:
The probability is
Step-by-step explanation:
From the question we are told that
The mean mileage of a tire is
The standard deviation is
The sample size is n = 209
Generally the standard error of mean is mathematically represented as
=>
=>
Generally the probability that the sample mean would differ from the population mean by less than 199 miles is mathematically represented as
=>
=>
=>
=>
From the z table the area under the normal curve to the left corresponding to 1.11 and -1.11 is
and
So
=>
