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Answer the following questions using the HYBRIDCARS data (on D2L).
The data containsa sample of prices for the Toyota Prius collected in July 2006 from n=160 dealers.
a) Give H0 and HA for testing whether the average July 2006 price was $25,000.
b) Calculate and interpret the p-value of the test.
c) State the appropriate conclusion for the test if α = 5%
d) State the appropriate conclusion for the test if α = 1%
e) Calculate a 95% confidence interval for the average Prius price and explain how it leads tothe same conclusion as part c)
there are 10 employees in a particular division of a company. their salaries have a mean of 80000 a median of 60000 and
a random sample of 12 lunch orders at noodles and company showed a mean bill of 12.99 with a standard deviation of 4.6.
Make use of Excel to determine the right-tail p-value.
Random Sample: Before you begin your analysis you are required to take a random sample of size 110 from the 170 cases in the file. Use the file Random_Sample_Generator-13-2.xls to do this.
Find the P value or an interval containing the P value for the sample test statistic.
Find a 90% confidence interval on the difference in the mean number of production units for the two shifts.
What is the probability that a randomly selected eagle's wingspan is exactly 77 inches? Explain your answer. What is the probability that a randomly selected eagle's wingspan is 77 inches or less?
Workers at a large toxic clean up project are concerned that their white blood cell counts may have been reduced. Let x be a random variable that represents white blood cell count per cubic millimeter of whole blood in a healthy adult.
Would you classify these data as time series or cross-sectional and which of the variables are quantitative and which are qualitative?
lifetime of a motherboard is modeled by a gamma distribution with parameters r80 and gamma 4 years-1. compute the
expectation of the statistic that was proposed by Statistician - Based on the information collected in Tasks 1-8, which of the two statistics produces values which tends to be more concentrated about the expectation of the measurement?
At the 0.10 significance level, can we conclude that the annual rates of return are higher on the big board?
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