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How do you figure the individual X value of interest.
What does measuring the standard deviation of a set of data tell you about the data
The probability that Luis will pass his statistics test is 0.44. What is the probability that he will fail his statistics test?
If a standard deviation of a set of data is zero, what can you conclude about the set of values?
Why don't statisticians calculate 100% confidence intervals?
A company operates four machines during three shifts each day. From production records, the data in the table below were collected.
Construct an appropriate control chart and comment on the process.
A certain firm specializing in the manufacture and sale of free time clothing has 80 retail stores in Florida and 140 in California. With each state as a stratum, the firm wishes to estimate average sick-leave time per employee for the past year
A University Web server has five main components each with the same reliability. All five components must work for the server to function as intended.
Given that the mean of 100 observations is 42.5 and that their standard deviation is 6.313, find the sum of the squares of the observations.
Critically discuss the assumptions, if any, regarding a Chi-square test? What are the assumptions to apply linear regression?
A coin is tossed 100 times. The difference "number of heads - number of tails" is like the sum of 100 draws from one of the following boxes. which one, and why?
If Xbar is the sample mean diameter for a random sample of n = 16 rings, where is the sampling distribution of Xbar centered, and what is the standard deviation of the Xbar distribution?
Small Wonder, an amusement park, experiences seasoned attendance. It has collected two years of quarterly attendance data and made a forecast of annual attendance for the upcoming year.
Suppose a coin is flipped and a die is rolled. Let E1 denote the event "the coin shows a tail", let E2 denote the event "the dies shows a 3", and let E3 denote the event "the coin shows heads and the die shows an odd number".
Calculate the difference in the average "clutter" between network and TV.
New study is to use 90% confidence level. Estimate is to be within 1 percent of population proportion. Determine the essential sample size?
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