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Suppose a control chart is constructed so that the probability of a point falling outside the control limits when the process is actually in control is .002. What is the probability that ten successive points (based on independently selected samples) will be within the control limits? What is the probability that 25 successive points will all lie within the control limits? What is the smallest number of successive points plotted for which the probability of observing at least one outside the control limits exceeds .10?
A random sample of 16 federal inmates is selected. What is the probability that exactly 12 are serving time for drug dealing?
suppose there are three bills in a wallet. one of thebills is a 1 one is a 5 and one is a 10 bill. you selecttwo bills
The survey web site received more than 400 responses, with more than 60% favoring continuing the parade, while the telephone response line received more than 120 calls, with more than 90% favoring banning the parade (San Luis Obispo Tribune, March..
the man of mass m1 88 kg and the woman of mass m2 62 kg are standing on opposite ends of the platform of mass m0 124
In each of the following situations, state an appropriate null hypothesis H0 and alternative hypothesis Ha. Be sure to identify the parameters that you use to state the hypotheses. (We have not yet learned how to test these hypotheses.)
the sample mean was found to be 21.3 minutes, with a sample standard deviation of 5.5 minutes. Is there evidence to reject the claim at the alpha = 0.05 level?
The average amount of insulation in the sample of household is 12 inches. The sample standard deviation is 15 inches. Set up and interpret a 95% confidence interval.
Estimate with 95% confidence the mean reduction in time it takes for someone who has taken the sleeping pill to fall asleep.
Starting with the model in Table 4, add both Em- ployment and Annual Payroll to the model. Does adding this pair improve the fit of the model by a statistically significant amount?
Formulate the null and alternative hypothesis for this management question (i.e. can the financial analyst conclude that there is no difference in the average earnings yield between companies in the manufacturing and retailing sectors?)
How many subjects must be tested to determine the effectiveness of the product?
A sample of 121 provided a sample mean of 77.3. The population standard deviation is known to be 16.5. Compute the value of the test statistic.
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