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A filling process is supposed to fill jars with 16 ounces of grape jelly. Specifications state that each jar must contain between 15.95 and 16.05 ounces. A jar is selected from the process every half hour until a sample of 100 jars is obtained. When the fills of the jars are measured, it is found that = 16.0024 and s = .0300. Using and s as point estimates of and , estimate the probability that a randomly selected jar will have a fill, x, that is out of specification. Assume that the process is in control and that the population of all jar fills is normally distributed.
Based on a P-value of 0.0248 the researchers concluded there was evidence that low birth weights may be a risk factor for susceptibility to depression. Explain in context what the reported P-value means.
A statistically significant result occurs when the value of the test statistic falls in the rejection region. A result has practical significance when it is statistically significant
Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.
Normal distribution of 5 pounds per square inch, standard deviation of 1.5 pounds per square inch, what proportion have less that 3.17 pounds per square inch, at least 3.6 pounds, are between 5 and 5.5 and 95% will be contained between what two va..
When the level of confidence and sample standard deviation remain the same, a confidence interval for a population mean based on a sample of n = 100
Tthen calculate the 95% and 99% CIs for the proportion of all female Hispanic drivers in Boston who wear seatbelts. Why is the 99% CI wider than the 95% CI?
From the given polynomials, identify the polynomials of degree one. I know that I have to use the substitution methode and the elimination. I am not sure if I applied the correct system.
Randomly selected statistics students were given five seconds to estimate the value of a product of numbers with a summary of the results of both groups given below.
Bill is completing a project for you in the marketing department. In conducting his anaysis regarding consumer behavior and a new product that has been released, he tells you the correlation between these two variables is 1.09.
The Warren County Telephone Company claims in its annual report that "the typical customer spends $70 per month on local and long-distance service.
A statistics professor would like to determine whether students in the class showed improved performance on the final exam as compared to the midterm examination.
The reason for this difference is not understood. Here are the summary data. Determine if the male scores are significantly higher than the female scores.
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