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{"ops":[{"insert":"a) The Ghana Economic Management Association wishes to have information on the mean income of store managers in the retail industry. A random sample of 256 managers reveals a sample mean of Ghc45,420. The standard deviation of this population is Ghc2,050. What is a reasonable range of values for the population mean? Interpret your results. \nb) i. Briefly outline the steps involved in hypothesis testing \nii. Use a table to illustrate how Type I and Type II error can occur \n\nc) State one use for each of the following \ni. The F distribution\nii. A one-way ANOVA\n\nd) State three assumptions of ANOVA \n\nQUESTION 2\nThe following sample observations were randomly selected\n\n X 4 5 3 6 10 \nY 4 6 5 7 7 \n\na) Determine the correlation coefficient and interpret the relationship between X and Y. \nb) Determine the regression equation \nc) Determine the value of when X is 7. \nd) State two uses of goodness-of-fit test\n"}]}
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