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.

a. is correct

b). 4320 have a nice day

x coordinate can be written by using the formula, x= x1 + 2/5(x2 - x1)

step-by-step explanation:

formula

x = x1 + p/w(x2 - x1)

let the line segment ab with a(x1,y1) and b(x2,y2)

a point(x,y) divide ab in the ratio, 2: 3 the x coordinate can be written as

x = x1 + p/w(x2 - x1)

here p=2 and w = 2+3

therefore,

x coordinate can be written by using the formula, x= x1 + 2/5(x2 - x1)

similarly y coordinate y = y1 + 2/5(y2 - y1)

answer: the answer is d