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The weights of bushels of corn produced by a large farm are approximately normally distributed with a mean of 89.46 pounds and a standard deviation of 2.31 pounds. What is the probability that the weight of a randomly selected bushel of corn is more than 90 pounds?
Furthermore, assume that the standard deviation of the population is $0.14. The value of the test statistic for this hypothesis test and the p-value respectively are?
Pollsters just report the results of hypothesis tests that show statistical significance but not those in which there was insufficient evidence.
Compute the confidence interval for the population. This is the question that I'm stuck on, I just really have issues finding confidence intervals
a water treatment plant needs to maintain the ph of the water in the reservoir at a certain level. to monitor this they
In a non instanteneous receipt model, daily demand is 55 units and daily production is 120 units, Co=$70 and Cc=$4 per unit per year. What is the maximum inventory level?
Mazda 6s resulting from a 10-mph crash into a concrete wall, the research group tests six cars of this type and assesses the amount of damage. Describe the population and sample for this problem.
Compute the 95% margins of error for the difference in the two proportions for n = 40, 50, 80, 100, 400, 500, and 1000. Present the results in a table and with a graph. Write a short summary of your findings.
Suppose that the national average for the math portion of the College Board's SAT is 512. The College Board periodically rescales the test scores.
A probability experiment us conducted in which the sample space of the experiment is S={1,2,3,4,5,6,7,8,9,10,11,12}, event F={5,6} , and event
Give a 95% and a 98% con?dence interval for the proportion of support for the president.
a. For any given spark plug, what is the probability that it will not fail during the first 20 minutes of flight?- What is the probability that none of the four spark plugs will fail during the first 20 minutes of flight?
Write out the ANOVA table just showing Sources of Variability and degrees of Freedom and indicate which SV are fixed effects and which are random.
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