can you help me solve this problem

timer Asked: Apr 7th, 2016

Question description

the us energy information association claims that the mean monthly residential electricity consumption in your town is more than 874 kwh. you want to test this claim. you find that a random sample of 64 residential customers has a mean monthly electricity consumption of 905 kwh. assume the population standard deviation is 125kwh. at a+0.05, do you have enough evidence to support the association's claim?

1) identify the claim and state Ho and Ha

2) find the critical value(s) and identify the rejection region(s)

3) find the standardized test statistc z

4) deciede whether to reject or fail to reject the null hypothesis and

5) interpret the decision in the context of the original claim

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