Question

In problems 2 and 3, you must display the null and alternative hypotheses before conducting the hypothesis test. You must also justify your choice of test by verifying that its assumptions are met. Finally, you must state your conclusion (Reject H0 or Fail to reject H0) in words that relate to the context of the problem. 2. A consumer group claims that the mean annual consumption of high fructose corn syrup by a person in the U.S. is 48.8 pounds. A random sample of 120 people in the U.S. has a mean annual high fructose corn syrup consumption of x̄ = 49.5 pounds. Assume the population standard deviation is σ = 3.6 pounds. Using the P-value approach with α = 0.05, can you reject the claim? 3. The U.S. Energy Information Association claims that the mean monthly residential electricity consumption in your town is more than 874 kilowatt-hours (kWh). You want to test this claim. You find that a random sample of 64 residential customers has a mean monthly electricity consumption of x̄ = 905 kWh. Assume the population standard deviation is σ = 125 kWh. Using the rejection region approach with α = 0.05, do you have enough evidence to support the association's claim?

          In problems 2 and 3, you must display the null and alternative hypotheses before conducting the hypothesis test. You must also justify your choice of test by verifying that its assumptions are met. Finally, you must state your conclusion (Reject H0 or Fail to reject H0) in words that relate to the context of the problem.

2. A consumer group claims that the mean annual consumption of high fructose corn syrup by a person in the U.S. is 48.8 pounds. A random sample of 120 people in the U.S. has a mean annual high fructose corn syrup consumption of x̄ = 49.5 pounds. Assume the population standard deviation is σ = 3.6 pounds. Using the P-value approach with α = 0.05, can you reject the claim?

3. The U.S. Energy Information Association claims that the mean monthly residential electricity consumption in your town is more than 874 kilowatt-hours (kWh). You want to test this claim. You find that a random sample of 64 residential customers has a mean monthly electricity consumption of x̄ = 905 kWh. Assume the population standard deviation is σ = 125 kWh. Using the rejection region approach with α = 0.05, do you have enough evidence to support the association's claim?

Added by Kari B.

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