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N=120, population standard deviation is (known) 5, alpha =.05, standard error of the mean (sigma of xbar)= .46, h0 is rejected if xbar<=9.25
If the population mean is 9, what is the probability that the sample mean leads to the conclusion "dont reject h0?
A consumer organization estimates that over a 1-year period 17 percent of cars will require to be repaired once, 7 percent will need repairs twice, and 4 percent will require three or more repairs. What is the probability that a car chosen at rand..
Identify and justify which type of sampling (random, stratified, systematic, cluster, convenience) is used in the following examples.
For the following scores, find the (A) mean, (B) median, (C) sum of squared deviation (d) variance, and (e) standard deviation:
For a new HDTV the mean number of months until repairs are needed is 36.84 with a standard deviation of 3.34 months.
Find the margin of error for the estimator in this survey for a 95% level of confidence . In part c, what does the 95% level of confidence imply in relation to the margin of error?
Assume that the smiling time of eight-week old babies, in seconds, follows a uniform distribution between 0 and 23 seconds, inclusive. This means that any smiling time from 0 to and including 23 seconds is equally likely.
At a computer manufacturing company, the actual size of computer chips is normally distributed with a mean of 1 centimeter and the standard deviation of 0.1 centimeter. A random sample of 12 computer chips is taken. What is the possibility that th..
What is the sample space for this process and evaluate the variance of the intelligence scores
What proportion of time will it take clean-up crew 56 or more hours for cleaning plant? Define the lower and upper limits of interval.
From Group of 40 People, a jury of 12 people is selected. In how many various ways can a jury of 12 people be selected?
On average, how long does patient stay in ER? On average, how long does Potential Admit stay in ER? On average, how many patients are in the ER?
Determine the 95% confidence interval for your estimate what data have you utilized as the basis of your predictions what suppositions have you made.
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