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Find the confidence interval for the proportion.
A recent study of 75 workers found that 53 people rode the bus to work each day. Find the 95 percent confidence interval of the proportion of all workers who rode the bus to work.
Find the probability of getting a head and rolling a six
Find out the probability that at least one of the CD's is defective?
Projection are form the U.S. National Center for Education Statistics>. Create a multiple bar graph of data, and then explain any trends.
Banner Mattress and Furniture Company wishes to study the number of credit applications received per day for the last 300 days.
Find out the operating characteristics for this system.
Then describe trade-offs which will happen when you lower sample to $10,000 to meet their budget.
The distribution of lifetimes for a certain type of light bulb is normally distributed with a mean of 1000 hours and a standard deviation of 100 hours. Find the 33rd percentile of the distribution of lifetimes.
The mean return for a random sample of 33 mutual funds is 14.93 percent with a standard deviation of 9.57. Build a 95 percent confidence interval for mu, population mean.
Use the continuity correction and describe the region of normal curve that corresponds to the indicated binomial probability. The probability of more than 50 right answers.
Construct a 95 percent confidence interval for the true mean.
A Correlation matrix (correlation, coefficients and probability level under the hypothesis rho = 0) for a company's sales force (age, years of service, and current sales) is given below. Comment.
Solve the mean and standard deviation equations
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