4 is 12% pollutants per 10,000 volume of air. A metropolitan city is trying to b

Question

4 is 12% pollutants per 10,000 volume of air. A metropolitan city is trying to bring its smog level into federal guidelines. The city comes up with a new policy where city employees are to use of city transportation to and from work. A local environmental group does not think the city is doing enough and no real change will occur. An independent agency, hired by the city, nuns a test on the air. What are the null and altermative hypotheses? 4) The federal guideline for smog A) HO: P-0.12 HA P 012 ?) ??: p 0.12 C) Ho: p-0.12 HA:p>012 D)Ho: p-0.12 HA:Ps012 E)HO P , 0.12 HA: P-0.12 5)Anew manager hired at a large warehouse was told to reduce the 26% employee sick leave. The 5) manager introduced a new incentive program for employees with perfect attendance. The manager decides to test the new program to see if it's better. What are the null and alternative hypotheses? A)H0: p-0.26 HA: p>026 ?) Hosp 026 HA: P 0.26 HA P 072 HA: p

Explanation / Answer

4. The correct choice is C

Because the null hypothesis include equality so that H0 : P = 0.12

Since the local environmental group does not thing the city is doing enough means they think the level of smog is greater than 12% so that H1 : P > 0.12

5. He want to reduce employees seek leave from the current 26% using new program .

So that the null and alternative hypothesis as

H0 : P = 0.26

H1 : P < 0.26

So correct answer is B

6 ) The correct choice is A

because the old strategy reduces weight of 72% of the participants and leader want the new strategy perform better than the old one. So he want to reduce more % than the 72% so the alternative hypothesis is H1 : P > 0.72

and H0 P = 0.72

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