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According to a pew research center report from 2012, the average commute time to work in california is 27.5 minutes. To investigate whether a different average is true for the small city that she lives in, a california high school student surveys 45 people she knows and finds the average commute time for this sample to be 24.33 minutes with a standard deviation of 9.53 minutes. Based on the p-value of 0.0308 what is the conclusion in terms of strength of evidenc to this hypothesis test.
Given the variances of the two samples below, find the test value and the degrees of freedom that should be used in an F test.
explain why ms-within is not an appropriate error term demoninator for the repeated measures
an instructor believes that 20 or less of the students who finish a statistics course get an a grade. a sample of 90
A local drugstore owner knows that, on average, 20 people enter his store eachhour, assume that the number of people that come into the store follows a Poissonprocess. Find the probability that at least 10 people will come to the store in 30 minute..
cars arrive at a toll booth at eppley airfield in omaha at an average rate of 8 in 20 minutes. arrivals are poisson
An investor wants to assess at confidence level of 98% if a medicament can improve the marks of students. He notices that for the following daily dozes: 2,2.5,3,4.5,7 mg, the improvement over the students that studied the same but took no mental b..
How many (and which) of the confidence intervals do not contain the true population mean of 500
dr. mack lemore wishes to estimate the proportion of people who buy items they know are defective from thrift shops
1 you are given the following payoff tyable in units of thouands of dollars for a decision analysis problem without
A part is produced with a mean of 6.2 ounces and a standard deviation of 0.2 ounce. What is the probability that the weight of 100 such items is between 6 l6 and 624 ounces?
Commute times: three random samples of time in minutes that commuters are stuck in traffic are shown. At anova =0.05, is there a difference in the mean times among the three cities?
What are various non-parametric tests utilized in business decision making? Give an example of each test with an appropriate business situation.
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