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The study reported in "Gait Patterns During Free Choice Ladder Ascents" (Human Movement Sci., 1983: 187-195) was motivated by publicity concerning the increased accident rate for individuals climbing ladders. A number of different gait patterns were used by subjects climbing a portable straight ladder according to specified instructions. The ascent times for seven subjects who used a lateral gait and six subjects who used a four-beat diagonal gait are given.
a. Carry out a test using α = .05 to see whether the data suggests any difference in the true average ascent times for the two gaits.
b. Compute a 95% CI for the difference between the true average gait times.
The current values of the stock portfolios for 80 clients of an investment counselor are as listed in data file XR02017. Use your computer statistical software to generate a frequency distribution and histogram describ- ing this information. Do a..
suppose 1657 of 2006 registered voters sampled said they planned to vote for the republican candidate for president.
Can you determine a in equation (7) by measuring the length of the spring with no load? With one measurement? Ten measurements? Explain briefly.
john takes a twenty question multiple choice test in which question has five possible answers. some of the answers he
Instructions and Background This assignment requires students to identify, discuss and evaluate potential data collection, analysis and reporting strategies for dealing with small sample data. Research Scenario The intended research design was a R..
If there are n vectors v1, v2, v3...vn in E^m, which spans a subspace of dimension k
what is the probability that a 20 year old female will live through her 25th year?what is the probability of dying for
Is there evidence that the population mean amount is different from 8.17 ounces? (Use a 0.05 level of significance and determine the p-value and interpret its meaning.
Consider the problem of minimizing c/x over a polyhedron P. Prove the following: (a) A feasible solution x is optimal if and only if c' d ;::: 0 for every feasible direction d at x. (b) A feasible solution x is the unique optimal solution if and o..
The class to get A's, 30% to bet B's, 30% to get C's, 15% to get D's and 10% F's. What would be the minimum and maximum scores required for each of these grades?
What is the probability that the first order will come on the fourth sales call of the day? Please show work and round to 4 decimal places.
The McCollough Corporation, a producer of various kinds of batteries, has been producing D size batteries with a life expectancy of 87 hours.
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