Mathematics, 07.04.2020 22:00 bleesedbeme
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 two decimal places.
Answers: 3
Mathematics, 21.06.2019 23:00
Answer this two poles, ab and ed, are fixed to the ground with the of ropes ac and ec, as shown: two right triangles abc and edc have a common vertex c. angle abc and edc are right angles. ab is labeled 13 feet, ac is labeled 15 feet, ec is labeled 10 feet, and ed is labeled 4 feet.what is the approximate distance, in feet, between the two poles? 11.14 feet16.65 feet14.35 feet15.59 feet
Answers: 1
Mathematics, 22.06.2019 00:00
Darragh has a golden eagle coin in his collection with a mass of 13.551\,\text{g}13.551g. an uncirculated golden eagle coin has a mass of 13.714\,\text{g}13.714g.
Answers: 2
Mathematics, 22.06.2019 00:30
An unknown number x is at most 10. which graph best represents all the values of x? number line graph with closed circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the left. number line graph with closed circle on 10 and shading to the left.
Answers: 1
Mathematics, 22.06.2019 01:20
Me i'm timed ! a. -2 to 1 b. -1.5 to 0.5c. 0 to 1d. 0.5 to 1.5
Answers: 2
Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone...
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