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The final examination of a course requires an essay. The number of pages from a sample of 25 students were collected. The data are:
5 8 9 3 12 8 5 7 3 3 8 9 5 2 7 12 9 6 3 8 7 10 9 12 7
a) Construct a histogram. Describe its shape.
b) Draw a cumulative graph
c) Calculate the 65th percentile
d) Calculates the upper quartile and bottom quartile
e) Interpret the results in b, c and d.
If you had only one minute to estimate the standard deviation of a frequency distribution using only the information that can be obtained from a stem and leaf display, how would you do it and why?
A statistics instructor wants to know which route will get her to school the fastest. Each day from October 2 to November 15, when she gets to the turn point she checks the odometer on her car
The company can either settle out of court for $250,000 or go to court. If the company goes to court and loses, it must pay $825,000 plus $175,000 in court costs. If it wins in court the plaintiffs pay the court costs. Identify the states of natur..
Test for single Proportion - Are the data consistent with the model? Answer yes or no, and explain briefly.
If the test is positive, what is the probability that this person actually has heart disease?
The analysis of variances produces df between = 3 and df within = 24. For this analysis, determine df total ?
In your environment (business or personal), please give an application of exponential smoothing and why you would use this technique.
Determine the probability that we would reject null hypothesis given that it is true?
what sample size should be used in the funding decision study? Use σ = $4000 as a planning value. ________________
Lead-time demand is 600 pounds. The standard deviation of lead time demand is 52 pounds. Supposing the lead time demand is normally distributed and that an acceptable risk of stocking out is 4%:
For a sample of 138 independent observations from a normal distribution of unknown μ and variance σ 2 = 2.6, the sample mean is 52.3. What is the width of the 95% confidence interval for μ?
Binomial distribution to find out the mean also standard deviation. Variance and standard deviation of a lot of 300 calculators.
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