FOR NEXT 5 QUESTIONS USE THE 1. The average life of light distributed with the mean A random sample of 100 bulbs conclude that the mean hypothesis, and Ha is the idea?
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2. If she conducts hypothesis
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Show transcribed image text The average life of light bulbs produced by SABA Electric Co. is expected to be normally distributed with the mean service life of 950 hours and standard deviation of 100 hours. A random sample of 100 bulbs is tested and it has a mean life of 910 hours. Can researcher conclude that the mean service life of the bulbs is less than the expectation? H0 is null hypothesis, and Ha is alternative hypothesis. Which method can researcher use to check the idea? A.Hypothesis testing – Z test B.Hypothesis testing – t test C.Sample size estimation for average D.None of the above 2.0 Points if she conducts hypothesis testing, she has to consider: A.one-tailed test B.two-tailed test C.one-tailed test because sample size is large D.two-tailed test because sample size is large 2.0 Points Which set of ideas can she formulate for her research? A.H0: micro = 950 and Ha: micro is not equal to 950 B.H0: micro = 950 and Ha: micro
The average life of light bulbs produced by SABA Electric Co. is expected to be normally distributed with the mean service life of 950 hours and standard deviation of 100 hours. A random sample of 100 bulbs is tested and it has a mean life of 910 hours. Can researcher conclude that the mean service life of the bulbs is less than the expectation? H0 is null hypothesis, and Ha is alternative hypothesis. Which method can researcher use to check the idea? A.Hypothesis testing – Z test B.Hypothesis testing – t test C.Sample size estimation for average D.None of the above 2.0 Points if she conducts hypothesis testing, she has to consider: A.one-tailed test B.two-tailed test C.one-tailed test because sample size is large D.two-tailed test because sample size is large 2.0 Points Which set of ideas can she formulate for her research? A.H0: micro = 950 and Ha: micro is not equal to 950 B.H0: micro = 950 and Ha: micro
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