a)It is claimed thata a vacuum cleaner uses an average of 46kwh per year. If a random sample of 34 homes included in a planned study indicates that vacuum cleaners use an average of 42 kwh per year with a standard deviation of 11.9 kwh, does this suggest that at he 0.05 level of significance thatvacuum cleaners use, on average, less than 46kwh annually? Assume the population of kwh to be normal b)what is it mean by Point Estimate?

A First Course in Probability (10th Edition)
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ISBN:9780134753119
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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a)It is claimed thata a vacuum cleaner uses an average of 46kwh per year. If a random sample of 34 homes included in a planned study indicates that vacuum cleaners use an average of 42 kwh per year with a standard deviation of 11.9 kwh, does this suggest that at he 0.05 level of significance thatvacuum cleaners use, on average, less than 46kwh annually? Assume the population of kwh to be normal

b)what is it mean by Point Estimate?

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