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A study was carried out to see whether acupuncture can relieve stress; another study looked at whether Rogaine results in significant hair restoration.
a. Which of the two studies is more susceptible to the placebo effect? Explain.
b. For which of the studies would it be easier to make the subjects blind to whether or not they are receiving the actual treatment?
For each of the given situations, determine whether a one-tail test or a two-tail test would be appropriate. Describe the test, including the null and alternative hypotheses, then explain your reasoning in selecting it.
find the inverse cdf of given distributions using r1 logistic1022 pareto213 weibull234 gamma355 beta352 let the inverse
Gasoline and number of gallons sold. For sample of 14 stations last Tuesday, correlation was 0.83. At 0.05 significance level, is correlation in population greater than zero?
In recent years, 3.4 children per year get sick with measles in Minnesota. If a recent year is taken at random, what is the probability that:
Define and differentiate between the gross autopsy rate and the net autopsy rate and Include illustrations of how to calculate both the gross and net autopsy rate
Of 1338 people who came into a blood bank to give blood, 253 people had high blood pressure. Estimate the probability that the next person who comes in to give blood will have high blood pressure.
The following output comes from a 2x2 factorial ANOVA analysis done on a dataset of Apgar scores. Apgar scores are a method for quickly and reliably summarizing the health of a newborn infant (lower scores indicate worse health, higher scores indi..
For example, electricity costs are $1,200 per month plus $0.15 per car washed. The company expects to wash 9,000 cars in August and to collect an average of $4.90 per car washed. Required: Prepare the company's planning budget for August.
It is believed that the range of hourly wages paid to auto mechanics in a large city is $9 (range approx. = 4sigma-squared). If we assume that hourly wages are approximately normally distributed,
Lexington Co. is a U.S. firm. It has a subsidiary in India that produces computer chips and sells them to European countries. The chips are invoiced in dollars. The subsidiary pays wages, rent, and other operating costs in India's currency (rupee)..
1. a researcher examines the records of all registered voters in one city and finds that 43 are registered democrats.
what is the critical f value for a sample of four observations in the numerator and seven in the denominator? use a
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