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Mall security estimates that the average daily per-store theft is less than $250, but wants to determine the accuracy of this statistic. The company researcher takes a sample of 81 clerks and finds that =$220 and s = $40.
a) Test at α = .01
b) Construct a 90% CIE of μ
At 5% level of significance, is true mean smaller than specification? Clearly mention your hypotheses and decision rule.
Most commercial op-amps are designed to be unity-gain stable [26]. That is, they are stable when used in a unity-gain configuration. To achieve higher bandwidth, some op-amps relax the requirement to be unity-gain stable.
assume a binomial probability distribution with formula n45 and 0.22 compute the followinga the mean and standard
If X is the proportion of persons who will respond to one kind of mail-order solicitation, Y is the proportion of persons who will respond to another kind of mail-order solicitation, and the joint probability density of X and Y is given by
Q: Italy restaurant in Rome consider to create new item on menu it consists of fish prepared in italy in italy way but japanese spices such as fusion cuisine they wat to get idea if customers like this menu item,
box 1 contains 1000 bulbs of which 10 are defective. box 2 contains 2000 bulbs of which 5 are defective. two bulbs are
Construct a 95% confidence interval estimate for the proportion of all workers who did not use the Internet within limits. Explain your findings so that your non-quantitative partner will understand them.
Its known that 5% of all AA bateries made by Power Manufactures are defective. AA batteries are sold in packs of 4. Find the probability that a pack of 4 has exaclty 2 defective batteries.
Calculate the average deposits per bank for FDIC- insured institutions during both time periods.
The histogram shows the 2004 per capita consumption of paper for 195 countries around the world.- Which summary statistics would you choose to summarize the center and spread in these data? Why?
Calculation of a Function in Microsoft Excel
A mining company finds that daily lost-work injuries average 1.2. If the local union contract has a clause requiring that the mine be shut down as soon as three workers incur lost-work injuries, on what percentage of the days will the mine be ope..
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