Question regarding independent samples
Why, when dealing with two independent samples where you cannot assume the population variances are equal, should the degrees of freedom be adjusted?
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loth is sold by bolt where the bolt is 15 yards of material. If the expected number of blemishes per yard is 0.1 find the probability that:
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Translate the excerpt below in confidence interval for p and approximate the value of the level of confidence, C In a survey of 8414 adults, 31.2% said they were taking vitamin E as a supplement. The survey's margin of error is plus or minus 1%
There are two children in family. At least one is boy born on Wednesday. Suppose a uniform distribution of births upon each of the 7 days of the week: 1/7th each day from Sunday through 1/7th upon Saturday, and 50% boys and 50% girls in the genera
Determine three conditions where the measured output of process has a small variation and three situations where the variation is larger (for instance, the time for a phone call to ring the other phone versus the time to speak to a person when mak
The commute time, in minutes, of residents of Ontario County is known to follow a skewed right distribution with µ = 20 minutes and ? = 10.5 minutes.
For the draw of single card from a well shuffled deck, show that the events H, J, that is the card is a heart or jack respectively, are independent.
1) Assume that a bowl contains 3 red chips and 3 blue chips. Two chips are withdrawn and discarded. Then the third chip is withdrawn. Given that the third chip is red, determine the probability that the two discarded chips were both red? One of ea
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