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As the population ages, there is increasing concern about accident-related injuries to the elderly. The ar- ticle Age and Gender Differences in Single-Step Recovery from a Forward Fall (J. Gerontol., 1999: M44-M50) reported on an experiment in which the maximum lean angle the furthest a subject is able to lean and still recover in one step was determined for both a sample of younger females (21-29 years) and a sample of older females (67-81 years). The following observations are consistent with summary data given in the article:
YF: 29, 34, 33, 27, 28, 32, 31, 34, 32, 27
OF: 18, 15, 23, 13, 12
Does the data suggest that true average maximum lean angle for older females is more than 10 degrees smaller than it is for younger females? State and test the relevant hypotheses at significance level .10 by obtaining a P-value.
suppose that the weight of a large bag of sugar is n5.05 0.081 and that the weight of a small bag of sugar is
Plot the data on fruit and vegetable consumption. Discuss the underlying causes that might explain the trend or pattern. Fit a linear trend to the data.
Difference Between New Drug for Heart Rate Reduction and Placebo
Find the critical t-value that corresponds to 90% confidence. Assume 90 degrees of freedom.
The IQ scores of 30 children from under-privileged households, were measured before and a year after, a program of nutritional supplementation was instigated at a primary school.
a sales manager collected the following data on annual sales and years of experience. sales
a magazine published a study on the ammonia levels near the exit ramp of a highway tunnel. daily ammonia concentrations
Determine the least squares equation. According to this information, what are the estimated sales for 2008 and 2009?
How does Austen represent masculinity? What types of men does the depict? Is there an ideal representation of masculinity? Consider Sense and Sensibility as a "conduct" manual and analyze the "advice" Austen is offering to young women.
cherry berry soda inc. claims that 15 percent of the population can identity its products. in efforts to boost their
Results are normally distributed with mean 200 and standard deviation 50. find probability that a single score will be less than 264.
The following sample data were obtained from three populations that did not follow a normal distribution. Compute the value of the test stastic. What is your decision on the null hypothesis?
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