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H.S. Degree of Lower Some College College Degree or Higher Total Worse off now 91 39 18 148No difference 104 73 31 208Better off now 235 48 161 444Total 430 160 210 800 At a .05 level of significance, is there evidence of a relationship between financial condition and education level? 1) What is the Hypothesis Scenario? 2) Compute an "Expected Frequencies" table. 3) Compute the value of the chi-square test statistic. 4) What is the conclusion? Use the following scenario to answer the 4 questions. A bank with a branch located in a commercial district of a city has developed an improved process for serving customers during the noon to 1 PM lunch period. The waiting time needs to be shortened to increase customer satisfaction. A random sample of 9 customers is selected, and stored in bank 1, the results, in minutes, are as follows: 4.21 5.55 3.02 5.13 4.77 2.34 3.54 3.20 4.50 Another branch is also concerned with the noon to 1 PM lunch period. A random sample of 10 customers is selected, and stored in bank 2, and the results, in minutes, are as follows: 9.66 5.90 8.02 5.79 8.73 3.82 8.01 8.35 10.49 6.68 Is there evidence of a difference in the median waiting time between the two branches? Use α = .05 5) What is the hypothesis scenario? 6) State n1, n2, and the critical values for the rejection regions. 7) What is the Wilcoxon Rank Sum Test Statistic? 8) State your decision and conclusion.
Construct a 95% confidence interval estimate of their mean weight.
Suppose you study a random sample of 100 GRE verbal exams. Determine the probability that the average (mean) score in this sample will be between 485 and 515.
perform hypothesis tests. please label the test statistic you found t value z value or chi square and the value. for
you are told that the population of the scores of iq test takers is normally distributed has a population mean of 100
the number of items sold by freds candy store for 2004 and 2007 and the store prices for the two periods
This paper is a detailed and comprehensive review of statistical research performed by others on a business related topic of the student's choice.
Only 40% of these eruptions last longer than 2 minutes. For each of the following random variables, write down the distribution and the PMF. (Identify all parameters) What are the expectation and variance?
A California lawyer practices law, on the average, for 30 years. Assuming these members remain steady, how many lawyers would you expect California to have in 2050.
free air is defined as air at standard temperature and pressure. how many cubic feet of free air must be compressed to
If the level of significance is 0.05, what is critical value to set up the decision rule to test the claim that the liberal arts students perform better than engineering students on average?
The diameter of small Nerf balls manufactured at a factory in China is expected to be approximately normally distributed with a mean of 5.2 inches and a standard deviation of .08 inch. Suppose a random sample of 20 balls is selected. Find the inte..
several psychology students are unprepared for a surprise truefalse test with 11 questions and all of their answers or
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