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A random sample obtained from a population has a mean of µ=100 and a standard deviation of σ = 20. The error between the sample mean and the population mean for a sample of n = 16 is 5 points and the error between a sample mean and population mean for a sample of n = 100 is 2 points. Explain the difference in the standard error for the two samples.
A random sample of 36 days yielded the average daily output of 890.2 tons, with standard deviation of 19.8 tons. Use this information to make a 95% confidence interval for mean.
An economist found that a random sample of 42 high school teachers had an average annual salary of $56,490. A previous study showed that the population standard deviation is $4150. Find the 99% confidence interval for µ, the average annual salary ..
The average could be a poor estimate of the spending of all teenagers given that only teenagers in malls were sampled.
Find out the constant using probability density function also cumulative distribution function. Assume X be a continuous random variable with probability density function.
Determine mean and standard deviation for number of erroneous returns per batch.
To test productivity quickly, he has his shift foremen record number of defective T-shirts made in randomly sampled week. Critical Value: t =Test Statistic (Show procedure.): t =?
At.05 significance level, is there a difference in mean number of calls per day between 2 employees? Compute the p -value?
LPP using the graphical method. Solveout the following linear programming problem utilizing the corner point method.
A coin is flipped e times and heads (h) or tails (t) are recorded:
Determine a 95% confidence interval for the true mean weight of such boxes?
To find the 95 percent confidence interval for the true population mean. From the results below, is it true that 95% of the sample means will fall
Determine 95% confidence interval evaluate for average number of years served by all Supreme Court justices?
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