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A factory is producing 50000 pairs of shoes. To test the claim that less than 1% of the shoes are sub standard, we took a sample of 500 pairs and found that 1.45% of them are sub standard quality. Find the critical value if the test is done with 5% level of significance (alpha=5%).
If a random sample of 200 items is taken from a population in which the proportion of items having a desired attribute is p = 0.30.
If the daily stock price, x, of United Technology is normally distributed with mean 6.56 and standard deviation 2.4, calculate the probability that in a randomly selected ay the price will be between $3.25 and $7.36. Hint: Review normal distribution
Revise the chart, if necessary, assuming special causes for out-of-control points. What is the expected time to make a decision? What is your estimate of the standard deviation of the time to make a decision?
Create a set of data that can be modeled as a polynomial function. Please provide a reference to the data. Plot the data using Microsoft Excel including the equation for the fit. Discuss how closely the data seem to match to the best fit line.
Determine the population and sampling frame for each of the following: (a) The local public library wants to conduct a customer satisfaction survey.
Is there any evidence that the true mean decibel level produced by smoke alarms in this city is less than 85? Use a = 0.01 and compute the p value to draw a conclusion.
Criticize the following definitions in light of the eight rules for lexical definitions:- Satire is a kind of glass, wherein beholders do generally discover everybody's face but their own.
Death penalty. The table shows the political affiliations of American voters and their positions on the death penalty.
Refer to the cash flows listed for the Kelly Company investment projects in the table below. The discount rate is 6 percent. Calculate the present value of these cash flows. What is the present value at:
Construct a 95% confidence interval for the difference in the average numbers of Christmas cards mailed by all households in these two towns.
To find z-score and required probabilities based on Normal distribution. Assume that childrens weekly allowances are normally distributed in the population.
Analyze the data. Write a summary of your results concerning the relationship between the adhesive and the occurrence of face checks. Be sure to include numerical and graphical summaries as well as the details of your significance tests.
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