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The length of a Colorado brook trout is normally distributed.
What is the probability that a brook trout's length, (Round your answers to 4 decimal places.)
(a) exceeds the mean?
(b) exceeds the mean by at least 1 standard deviation?
(c) exceeds the mean by at least 2 standard deviations?
(d) is within 2 standard deviations?
Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.
Build regression models for predicting house prices. We will be using data collected on 91 houses in Gainesville, Florida. The dataset contains the selling price of each house and information on four other explanatory variables.
A pediatrician is interested in studying the effect of Motrin on reducing temperature in young children. Four children with influenza have their temperatures taken immediately before and then 20 minutes after taking a standard dose
Findout the margin of error for this survey if we want a 99 percent confidence in our estimate of the percent of adults over 50 who take vitamin supplements.
A researcher believes that the percentage of people who exercise in California is greater than the national exercise rate. The national exercise rate is 20%. The researcher gathers a random sample of 120 individuals who live in California and find..
Testing for population proportion - evidence that the proportion of data processing clerks who have gone through the new training and are no longer employed is less than .25?
How much net profit can John expect (on average) to earn from the store in total over the next five years?
Describe what do you mean by conditional probability. Give clinical example to support the explanation.
Find the lowest possible score a candidate can score and still qualify. Assume the scores are normally distributed.
The height and diameter of 31 trees of a certain species were measured, the trees were cut down, and the volume of usable lumber was determined. Find the explanatory variable(s) in this study are
At.01 significance level is it sensible to conclude that modification decreased the number of traffic accidents?
Her results (in hours until turning a particular shade of brown) are in the table below. At ∞= .01, did she see a difference between the two treatments?
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