1) -10 9 8 7 6 5 4 3
2 3 4 5 6 7 8 9 10
Which quantity does this number line represent?
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A)
less than 7
B)
less than 6
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greater than 6
D)
less than or equal to 6

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables