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The sales manager for a hardware wholesaler finds that 229 of the previous 500 calls to hardware store owners resulted in new product placements. Assume these 500 calls represent a random sample.
Find a 95% confidence interval for the long-run proportion of new product placements?
What level of confidence is associated with an interval of .400513 to .515487 for the long run proportion of new product placements?
Test hypothesis that both propellants have same mean burning rate. Utilize α=0.05. Compute the P value.
At the .01 significance level, can she conclude that there is a difference between how well the different tutorials work for the students?
The machine will stop working if more than three components fail. Find the probability that the machine will be working.
The average monthly gasoline purchase for a family with 2 cars is 90 gallons. This statistic has a normal distribution with a standard deviation of 10 gallons. A family is chosen at random.
Plot the data on the same line and give your impression regarding any apparent differences between the two companies.
Suppose the horses in a large stable have a mean weight of 1464 lbs, and a standard deviation of 111. What is the probability that the mean weight of the sample horses would differ from the population mean by less than 11 lbs if 34 horses are samp..
Twenty three percent of automobiles are not covered by insurance. On a particular weekend, 35 automobiles are involved in accident.
Texas Company produces and sells 22,000 units of a single product. Costs associated with this level of production are as follows:
At the .05 significance level, can we conclude that the guideline is still reasonable?
Using an alpha of .05, what can you conclude about homogeneity of variance from the output? Word process your responses on the SPSS output pages.
Determine the probability that gas tank's capacity is above 15.25 gallons?
What is the probability that he completed the assignments?
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