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Question 9 1 Point The number of hours a light bulb burns before failing varies from bulb to bulb. The distribution of burn out times
Question 9 1 Point The number of hours a light bulb burns before failing varies from bulb to bulb. The distribution of burn out times is strongly skewed to the right. The central limit theorem says that The distribution of the parent population is unknown B The average burnout time of a large number of bulbs has a distribution that is close to normal. C The average burnout time of a large number of bulbs has a distribution of the same shape (strongly skewed) as the distribution for individual bulbs. As we look at more and more bulbs, their average burnout time gets ever closer to the mean u for all bulbs of this type Question 10 1 Point A study hypothesised that the speed of fast bowlers differs between left- and right-handed bowlers. A sample of 12 left-handed bowlers had a mean * = 131.5 kph and standard deviation Sient = 15.5 kph, while a sample of 8 right-handed bowlers had a mean =150.1 kph and standard deviation Snight = 8.1 kph. State appropriate null and alternative hypotheses. Hen right A H left =P right B He Fright C H right D He FP right
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