Mean Standard Error Median Mode Standard Deviation Sample Variance Kurtosis Skewness Range Minimum Maximum Sum Count 111
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Mean Standard Error Median Mode Standard Deviation Sample Variance Kurtosis Skewness Range Minimum Maximum Sum Count 111
population mean and standard deviation.
(b) Calculate the 95% confidence interval for
the population mean. Show
all the steps required.
(c) Determine the conclusion for your case
above.
(d) Suggest how to improve the reliability and
precision of the confidence interval calculated. Calculate the
minimum sample size to reduce the width of confidence interval
calculated by half.
A) Determine the conclusion for your case above using a
hypothesis test. Show all the steps required.
b) Describe type I and II errors.
(c) Explain the consequences of committing type I and type II
errors respectively. Suggest how to adjust the significance level
to minimise type I and type II errors respectively.
Mean Standard Error Median Mode Standard Deviation Sample Variance Kurtosis Skewness Range Minimum Maximum Sum Count 11175.63636 500.5881845 10417.5 16775 2347.96671 5512947.671 1.243673671 1.374865643 8072 8703 16775 245864 22
Mean Standard Error Median Mode Standard Deviation Sample Variance Kurtosis Skewness Range Minimum Maximum Sum Count 10953.59459 325.6242987 11187 11374 1980.695283 3923153.803 0.92480091 0.110940777 9389 6533 15922 405283 37