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Select a random variable to represent the category. Produce a probability mass function for that variable, and use it to compute the mean, the median and the variance of the data in the data set. Show the probability mass function, both in tabular and graphical forms (NOT by histograms) properly labelling the x-axis.
For the data shown below, prepare a x-bar chart. Note that the sample size is three. Record the values for the UCL, center line, and LCL. In addition, note any points that are out of control.
On which test did he do better compared to the rest of the class?
Use value you found in part a to find out degree of confidence for interval 65.65
Using the p- value approach, test the hypotheses at the 5% level of significance.
Determine the probability that computer will fail within 12 months?
A process is out of control when:
What kind of statistical test best did you use?
What proportion of time will it take clean-up crew 56 or more hours for cleaning plant? Define the lower and upper limits of interval.
Compute and interpret each of the statistics in parts(a) through (f) Mean and Median.
Based on a scatter diagram, would you estimate the linear correlation coefficient to be:
The mean maximum oxygen uptake for elite athletes has been found to be 80 with a standard deviation of 8.1. Assume that the distribution is approximately normal.
The lengths of pins produced by a machine follow a normal distribution with mean 2.54 cm and standard derivation 0.04 cm.
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