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Suppose X is a normal random variable with mean μ = 54 and standard deviation σ =8.? Compute P(X > 42). (Round to four decimal places.)
Determine and interpret the p-value for the test. Source: Bureau of the Census, Statistical Abstract of the United States 2009, p. 163.
Use this information to find the upper and lower limits of the first class if you wish to construct a frequency distribution with 10 classes.
The sample information is reported below. At the .10 significance level can we conclude that there is a difference in the amounts quoted?
Suppose that the null hypothesis is rejected and that an alternate hypothesis is accepted. Discuss the conclusion as a type I error, a type II error, or a correct decision-if in fact the defendant is innocent.
Cattle. The Virginia Cooperative Extension reports that the mean weight of yearling Angus steers is 1152 pounds. Suppose that weights of all such animals.
Draw a bar chart to portray the survey results. Draw a pie chart for the survey results. If you are preparing to present the results to Ms. Damonte as part of a report, which graph would you prefer to show? Why?
What is the margin of error of the large-sample 95% confidence interval for the proportion of all Quebec adults who would allow doctor assisted suicide?
a^2 + b^2=c^2 + d^2 where a,b,c,d are real numbers(describe equivalence cl). For a pair of fractions a/b and c/d define a/b ~ c/d if ab=cd(same here)
What is wrong with Denzel Washington's logic (give the answer in both z scores and percentile ranks).
Do prices appear to be the same in the four markets? Explain.- Does the presence of any outliers affect your overall conclusions about prices in the four markets?
What is the mean amount deducted from the total purchase amount? What is the standard deviation of the amount deducted from the total purchase?
Using the .05 level, do the results support the researcher's theory? (a) Use the steps of hypothesis testing, (b) sketch the distributions involved.
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