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A service advertises that it will take them in average 18 min to fix the problem. Independent contractor was hired to check how long it will really take to fix the common problem. Test was done nine times. Table below shows collected results (sample data) in min.
17 19 20 30 29 25 21 24 40
Apply Hypothesis Testing at the 5% level to check if average time of problem solving takes 18 min..
Find Test Statistics, t-value, and p-value to make the decision.
Plant C supplies 20%, with paint mixed incorrectly 20% of the time. If Ponderosa guarantees its product and spent $10,000 replacing improperly mixed paint.
Those in group 3 study with no sound at all. After studying, all students take a 10 point multiple choice test covering the material. The results are listed below. Use SPSS to conduct a one-way ANOVA to determine if Dr. Larm's hypothesis is correc..
Assuming normal populations with equal standard deviations, and using the 0.10 level, is there a significant difference between the two routes?
What is the probability that a given cell survives the radiation with at least one mutation?
In a study of parents' feelings about a required course in sex education, 360 parents, a random sample, are classified according to whether they have one, two, or three or more children in the school system and also whether they feel that the cour..
doctors have developed three new procedures ab and c for treating certain types of cancer known as adenocarcinomas and
a simple random sample of 120 sat scores has a mean of 1540. assume that sat scores have a population standard
The video makes the point that though nobody wants to think that they are a statistic, acting as if you are a statistic can help you make better decisions. That said, statisticians should never forget that the numbers they analyze correspond to re..
In Problem 15 we collected a balanced RSS of 96 subjects from the NHANES III population using a set size of k = 8 and arm circumference as the auxiliary variable to perform the judgment rankings with the goal of making inferences about the BMI for..
Can an ANOVA analysis be performed on just two sets of data? If so, what other statistical analysis technique is this equivalent to?
Angela took a general aptitude test and scored in the 83rd percentile for aptitude in accounting.
For each of the following phrases write down the probability number that you feel is rep resented by the phrase. After doing so, check your answers to be sure they are consistent. [For example, is your answer to e less than your answer to j?]
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