Please help! :< STATISTICS AND PROBABILITY (PLEASE SHOW your COMPLETE & CLEAR solutions) RATE WILL BE GIVEN ISELCO 2 has listed a variety of home appliances each with annual total electricity consumption in kilowatt-hour. For a medium-sized refrigerator, the annual electricity consumption is said to be an average of at most 46 kilowatt-hours. A random sample of 15 homes included in the study showed that medium-sized refrigerators consume electricity at an average of 43 kilowatt-hours per year with a standard deviation of 10.9 kilowatt-hours. At a significance level of 0.05 and assuming that the population is normal, do this sample show that medium-sized refrigerators consume on average. 46 kilowatt-hours per year? Answer the following: a. State the null and alternative hypothesis (in words and in symbols) and identify the claim. b. Find the critical value/s. c. Compute the test value. d. Make the decision (include a normal curve to show where the test value falls). (2 points) e. Summarize the results.
Please help! :<
STATISTICS AND PROBABILITY (PLEASE SHOW your COMPLETE & CLEAR solutions) RATE WILL BE GIVEN
ISELCO 2 has listed a variety of home appliances each with annual total electricity consumption in kilowatt-hour. For a medium-sized refrigerator, the annual electricity consumption is said to be an average of at most 46 kilowatt-hours. A random sample of 15 homes included in the study showed that medium-sized refrigerators consume electricity at an average of 43 kilowatt-hours per year with a standard deviation of 10.9 kilowatt-hours. At a significance level of 0.05 and assuming that the population is normal, do this sample show that medium-sized refrigerators consume on average. 46 kilowatt-hours per year?
Answer the following:
a. State the null and alternative hypothesis (in words and in symbols) and identify the claim.
b. Find the critical value/s.
c. Compute the test value.
d. Make the decision (include a normal curve to show where the test value falls). (2 points)
e. Summarize the results.
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