Starred Sent Mail Drafts (32 A plant in the manufacturing sector is concerned ab

Question

Starred Sent Mail Drafts (32 A plant in the manufacturing sector is concerned about its sulfur dioxide emissions. The weekly sulfur dioxide emissions follow a normal distribution with a mean of 1000 ppm (parts per million) and a standard deviation of 25. Recently, a "cleaner" technology has been adopted. In such a scenario, the CEO would like to investigate whether there has been a significant change in the emissions and has hired you for advice. In other words, the CEO wants to know if the mean level of emissions is different from 1000, what decision do you arrive at for the 1% level of significance? More label Cono Select one: a. Reject Ho b. Accept Ho C. Fail to reject Ho d. None of these No Hangouts Find som Next page Previous page

Explanation / Answer

The weekly sulfur dioxide emissions follow a normal distribution with a mean of 1000 ppm.

And CEO wants to know if the mean level of emissions is different from 1000 ppm.

So the Hypothesis,

Null Hypothesis: The mean level of emissions is not different from 1000ppm.

Alt. Hypothesis: The mean level of emissions is different from 1000ppm.

And actually the mean level of emissions mean is 1000ppm means reject the null hypothesis.

The option a is correct, Reject H0

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