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A researcher fails to find a significant difference in mean blood pressure in 36 matched pairs. The test was carried out with a power of 85%. Assuming that this study was well designed and carried out properly, do you believe that there really is no significant difference in blood pressure? Explain your answer.
On approximately what day did the most flies die?- On what day during the first 100 days did the largest proportion of flies die?
Tthe United States during 1993 was $40,500. Assume the standard deviation was $8,500. Should a mobile home selling for $75,000 be considered an outlier? Explain why or why not.
given independent random variables with the means and standard deviations below find the mean and standard deviation of
Use Chebyshev's theorem to find what percent of the values will fall between 120 and 150 for a data set with mean of 135 and standard deviation of 7.5.
Six houses were selected and each appraiser provided an appraisal for each of the six houses. What would be the best statistical test to use for the analysis of this data?
1. Given: A normally distributed population with 150 and 24. If samples of size 36 are drawn at random, what is the probability of obtaining
That successive pitches are independent of oneanother. Knowing this, the opposing team manager has instructed his hitters to not swing at anything. The better walks on the fourth pitch.
In a certain pediatric population, systolic blood pressure is normally distributed with mean 115 mm Hg and standard deviation 10 mm Hg. Find the probability that a randomly selected child from this population will have:
His assistant thinks the standard deviation is less than three feet. If the instructor were to conduct a test, what would the null and alternative hypotheses be
Technically a population consisting of all steel plates produced by a steel industry company has an average length of 80 cm with a standard deviation
Jorge's score on Exam 1 in his statistics class was at the 64th percentile of the scores for all students. His score falls at the mean score for all students.
a cutting tool wears out with a time to failure that is normally distributed with a mean of 10 working days and a
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