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The College Board reported that 60% of all students who took the 2006 AP Statistics exam earned scores of 3 or higher. One teacher wondered if the performance of her school was different.
She believed that year's students to be typical of those who will take AP Stats at that school and was pleased when 65% of her 54 students achieved scores of 3 or better. Can she claim that her school is different? Explain.
consider random sample from a populaion x that is exponentialhy distributed with parameter y. fxyye-yx for xgt0a
The differences and similarities between descriptive and inferential statistics will also be examined with examples provided for each.
a particular genetic disease occurs in anyone who has one copy of gene a and two copies of gene b genes a and b are
At the .05 level, you are testing whether there is a significant difference in the proportions of college students and similar aged non college students having accidents during the two year period. Is this a 1 or 2 tail test?
what is the probability that a randomly chosen 10-card hand has exactly three three-of-a-kinds and no
Is there sufficient evidence at the alpha =0.05 level to support the researcher's claim?
You work at a hospital that has always had about 100 emloyees staffed at night. You think that the number of employees staffed at night has recently decreased and would like to test this claim.
Over the past 50 days, the distribution of the number of successful calls made by the assistant is as shown below.- Using the 0.05 level of significance, test the goodness of fit between these data and a Poisson distribution with λ = 1.4.
You are a research analyst with a large research and development firm, Akron Research. Your firm performs studies and analysis for companies that need product, process improvement, manufacturing, and consulting research services.
Assume that cans of Coke are filled so that the actual amounts have a mean of 12.00 oz and a stand. dev. of 0.11 oz. Find the P that a sample of 36 cans will have a mean amount of at least 12.19 oz.
listed 3.52 8.87 3.99 3.61 2.33 3.21 0.25 4.94 are weights in pounds of glass discarded in one week by randomly
Ten thousand fireflies are unable to produce light due to a genetic mutation. express the null hypothesis and the alternative hypothesis in symbolic form.
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