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Is there a significant difference between the lengths of front and rear legs of a certain breed of horses. The results of the measurements in inches made in 10 of these animals are:
No. of copies 1 2 3 4 5 6 7 8 9 10
Long. Foreleg 138 136 147 139 143 141 143 145 136 146
Long. Hind leg 142 140 144 144 142 146 149 150 142 148
Perform a hypothesis test, assuming that the data come from a normal distribution.
What were the statistical hypothesis? What statistical test did you use and why? What is the rejection region and critical values? What is the p-value? What decision did you take?
A sample of 64 observations is selected from a normal population. The sample mean is 215, and the sample standard deviation is 15. Conduct the following test of hypothesis using the .03 significance level.
A clinical trial was conducted comparing a new compound designed to improve wound healing in trauma patients to a placebo. After treatment for 5 days, 58% of the patients taking the new compound had a substantial reduction in the size of their wou..
If they must form an ethics subcommittee of 4 members, how many different subcommittees are possible?
Assuming that the Styrofoam absorbs a negligibly small amount of heat and that no heat was lost to the surroundings, what is the specific heat capacity of the metal?
Determine critical path and project completion time. Determine the probability that the project will be finished in 70 days or less. Determine the probability that the project will be finished in 80 days or less
Define irregular component in time series and explain the differences between other components as well as its effects.
If a garage is robbed, what is the probability the doors were left open?
Sketch a histogram of these data and give the modal class.
The article can be on Descriptive Statistics, Probability and the Normal Distribution, Sampling and Sampling Distributions, Regression Analysis, or Time Series Forecasting.
In an online survey of 4,001 respondents, 8% were classified as productivity enhancers who are comfortable with technology and use the Internet for its practical value (data extracted from M. Himowitz, "How to Tell What Kind of Tech User You Are,"..
ABC Trucking Company purchased 15 trucks at the same time to start their business. 5 Trucks were purchased from Peterbilt, 5 from Freightliner, and 5 from Kenworth.
Suppose in an attempt to develop marketing materials Tyco marketers are interested in determining whether there is a significant difference in the cost of replacing pipeline seals in different countries.
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