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In measuring reaction time, a human factors engineer estimates that the standard deviation is 0.20 second. How large a sample of measurements must be taken in order to be 95% confidence that the error in her estimate of the mean reaction time will not exceed 0.02 second?
calculate the mean deviation form 1 arithmetic mean 2 median 3 mode in respect of the marks obtained by nine students
Detailed description of -the mean deviation about for the numbers 4/11, 6/11, 8/11, 9/11, 12/11. 8/11 is and 2nd question is the mean and SD for a,b and 2 are 3 and 2/sqrt3 respectively. The value of ab would be?
It has been estimated that 30% of all farms are family-owned. In a sample of 12 farms, what is the probability that exactly three farms are family owned?
One minute follows a Poisson distribution with mean of 1.8. In a 10- minute span of time, what is the probability that the team scores exactly 25 points.
Schlepsi has contracted with AluminiCorp to produce special beverage cans for an upcoming promotion. They want 25% of the Schlepsi cans produced by AluminiCorp to be imprinted with the phrase 'A Winner is You!' along with a promotion code for the ..
Students given exam with 300 multiple questions, distribution was normal and mean 195 with a standard deviation of 30. What were the scores of the students who are within one standard deviation of the mean?
11.9% reported they were in fair or poor health, including 10.5% of the married people, 19.6% of widows, 16.7% of divorced or separated, 12.5% of those never married, and 14% of those living with an unmarried partner.
Suppose that in a hypothesis test with null hypothesis = 13.0 at 0.05, that a value of 11.0 for the sample mean results in the null hypothesis not being rejected.
Components shipped include 0.5% defectives. You plan to select 80 items; if 0 are defective, you will assume all are okay.
1.for small samples t intervals are z intervals based on the same data set.a.narrower thanb.the same asc.wider than2.i
question women make up 24 of the science and engineering workforce. in a random sample of 400 science and engineering
"What is the five-step process for hypothesis testing? Is the order important? Why or why not?"
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