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Suppose that Nabisco would like to determine, with 95% confidence and a maximum likely error of 0.03, the proportion of first graders in Pennsylvania who had Nabisco's Spoon-Size Shredded Wheat for breakfast at least once last week. In determining the necessary size of a simple random sample for this purpose:
a. Use 0.5 as your estimate of the population proportion.
b. Do you think the population proportion could really be as high as 0.5? If not, repeat part (a) using an estimated proportion that you think would be more likely to be true. What effect does your use of this estimate have on the sample size?
Does this design use paired data or independent samples? Explain. Calculate the relevant summary statistics from the data? Are the conditions satisfactory for a test of significance to be applied? Show your graphical evidence.
If they didn't launch new mixing plant another alternate can contribute twenty five million profit for the same period (i.e. estimated 6 years). Draw the complete decision tree and determine whether the product should be launched or not.
P dollars is invested at annual interest rate r for 1 year. If the interest is compounded semiannualy, then the polynomial P(1+r/2)^2 represents the value of the investment after 1 year.
Assume that a 95% confidence interval for the mean is 14.5
The resident would be interested in joining this recreation center if it were built. Of these 35 indicated they would be interested in joining the recreation center. The population of interest is?
Assuming a normal distribution of the decision-making time, what proportion of the applications will not meet this goal value?
the stewart aviation products company has been successfully manufacturing aircraft al- timeters with errors normally
You may assume the sample data comes from a population that follows a normal distribution. Using a .05 level of significance test the company's claim.
in each case determine whether the study in question is a controlled experiment or an observational study justify your
to test an herbal treatment for depression 100 volunteers who suffered from mild depression were randomly divided into
he input to a linear filter is a random process with the following autocorrelation function:- Determine the autocorrelation function of the filter output.
1. The Hoylake Rescue Squad receives an emergency call every 1, 2, 3, 4, 5, or 6 hours, according to the following probability distribution. The squad is on duty 24 hours per day, 7 days perweek:
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