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The life in hours of a battery is known to be approximately normally distributed with a standard deviation of g = 1.25 h
Posted: Wed May 11, 2022 6:42 am
by answerhappygod
- The Life In Hours Of A Battery Is Known To Be Approximately Normally Distributed With A Standard Deviation Of G 1 25 H 1 (50.45 KiB) Viewed 26 times
The life in hours of a battery is known to be approximately normally distributed with a standard deviation of g = 1.25 hours. A random sample of 10 batteries has a mean life of x = 39.5 hours. 1. Is there any evidence to support the claim that battery life is less than 40 hours? Use a = 0.01 2. What is the p-value for the test in 1? 3. What is the type Il error for the test in 1, if true mean life is 38 hours? 4. What sample size would be required to ensure that type Il error does not exceed 0.10 if true mean life is 36 hours? 5. Calculate an appropriate confidence bound to answer the question in 1. Choose the correct statement: Ο Α. Η: μ = 40 H, :μ> 40 OB. Daar is genoeg getuienis om H, te verwerp. There is enough evidence to reject H. OC. P-waarde < 9% P-value < 9% O D. Tipe Il fout = 3.2% Tipe Il error = 3.2% En > 2 om te verseker dat tipe II fout groter is 0.10. n> 2 to ensure that type II error exceed 0.10 OF. Met 99% waarskynlikheid is u < 40.42. Ons kan nie H, verwerp nie. With 99% probability u 5 40.42. We cannot reject H O G. Geen van die alternatiewe / None of the alternatives.