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A biologist is investigating the effect of potential plant hormones by treating 20 stem segments. At the end of the observation period, he computes the following length averages:
Compound X = 1.18
Compound Y = 1.17
Based on these mean values, he concludes that there are no treatment differences.
1) Are you satisfied with his conclusion? Why or why not?
2) If he asked you for help in analyzing these data, what statistical method would you suggest that he use to come to a meaningful conclusion about his data?
3) Are there any other questions you would ask him regarding his experiment and data collection and analysis methods?
The demand for a product of Carolina Industries varies greatly from month to month. Based on the past 2 years of data, the following probability distribution shows the company's monthly demand.
Canada has two official languages, English and French. Choose a Canadian at random and ask, "What is your mother tongue?
Discuss an element of drinking water where you see a public health gap or need that should be addressed. You may bring up a specific case relevant to your community if you have one, or bring up a global issue.
Infomercials often peddle products under the guise of "studies show," While some of the products are surprisingly good, many aren't.
Which of the following best explains how the F ratio examines differences among groups? A. The critical F is compared to the critical t.
At the .05 significance level, test the claim that the proportion of all children in the town who suffer from asthma is 11%.
Blood type AB is found in only 3% of the population. If 320 people are chosen at random, find the probability of the following. (Round your answers to four decimal places.)
Given the following hypotheses: the true mean equals 100 (the null) and the true mean does not equal 100 (the alternate), a random sample of six resulted in the following values:
The politician's advisors estimated the proportion supporting her fiscal policy to be .60. How large of a sample is required?
what proportion of a normal distribution is located in the tail beyond a z-score of z
two friends are training for the boston marathon. james is training on a hilly jogging loop. forthe general population
A standard deviation of 0.45 miles per gallon, find the probablilty that a car has a gas mileage of between 27.8 and 28.2 miles per gallon.
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