Our environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 5.4 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 9 samples is 5.0 ppm with a variance of 0.64. assume the population is normally distributed. a level of significance of 0.02 will be used. find the value of the test statistic. round your answer to three decimal places.

f

step-by-step explanation:

f

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %

twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2