Determining expected value

Assignment Help Basic Statistics

Reference no: EM1320844

Q1) If the probability distribution of X is:

X	p(X)
3	1/8
4	1/8
5	3/8
6	3/8

Determine the expected value of X? Find out the variance of X?

2) Machine is made up of three components: upper part, a mid part, and a lower part. Machine is then assembled. 5% of upper parts are defective; 4% of mid parts are defective; 1 percent of lower parts are defective. Determine the probability that machine is non-defective?

Number of items rejected daily by manufacturer as defects for the last 30 days are: 20, 21, 8, 17, 22, 19, 18, 19, 14, 17, 11, 6, 21, 25, 4, 19, 9, 12, 16, 16, 10, 28, 24, 6, 21, 20, 25, 5, 17, 8 give the following descriptive statistics for these data: sample variance, minimum value, range, mean, maximum value, median, mode (if one exists), and sample standard deviation

Reference no: EM1320844

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