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A jar containing 100,000 marbles. There are 6 colors of marbles in the jar and they are present at frequencies of 2%, 2%, 4%, 10%, 57%, 25%. How do determine my precision in estimating the true color frequencies in my jar at various sample sizes (I can't replace marbles)? For example, If I remove 500 marbles from the jar, what kind of precision will I have in estimating the frequency of a color that is actually present at 2%?
Use the critical values for z of 1.65 and a p level of approximately 0.10, or 10%. For each of the following values, determine if you would reject or fail to reject the null hypothesis:
What is the probability that the team wins tonight and that there will be a large crowd at tomorrow's game?
Modern aircraft engines are very reliable. One feature contributing to that reliability is the use of redundancy, where critical components are duplicated so that if one fails, the other will work.
Write a brief statement of purpose of the study. Define the population. State the hypotheses for the study. Select an a value
A geologist has collected 10 specimens of basaltic rock and 10 specimens of granite. The geologist instructs a laboratory assistant to randomly select 15 of the specimens for analysis.
Eexperiment begins the instant after the zeroth car goes by. Determine, in as simple form as possible, expressions for the probability that?
The firm uses $200,000 of its cash balance to pay off a current liabilities. Calculate the current ratio before and after this transaction.
The amount of Jen's monthly phone bill is normally distributed with a mean of $50 and a standard deviation of $10. Find the 25th percentile.
You are trying to determine the statistical significance of an equation. Given the following information, test the slope of the equation at the 95% level of confidence.
Also, the sample data appear to have a bell-shaped distribution. Construct the 95% confidence interval for the mean time spent on paperwork by all managers.
The sampled results show that sample mean and standard deviation were $52.00 and $17.50, respectively. Use this information to create a 95% confidence interval for the mean.
The Weithoff company has a contract to produce 10000 garden hoses for a customer. Weithoff has 4 different machines that can produce this kind of hose.
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