Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 6.2 parts
/million
( ppm ). A researcher believes that the current ozone level is not at a normal level. The mean of 14 samples is 5.8 ppm with a variance of 0.64 . Assume the population is normally distributed. Does the data support the researcher's claim at the 0.05 level? Make the decision to reject or fail to reject the null hypothesis.

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Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 6.2 parts

/million

( ppm ). A researcher believes that the current ozone level is not at a normal level. The mean of 14 samples is 5.8 ppm with a variance of 0.64 . Assume the population is normally distributed. Does the data support the researcher's claim at the 0.05 level? Make the decision to reject or fail to reject the null hypothesis.

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