A hypothesis will be used to test that a population mean equals 7 against the alternative that the population mean does not equal 7 with unknown population variance. What are the critical values for the test statistic for the following significance levels and sample sizes? 1. For a = 0.01 and n = 20 2. For a = 0.05 and n = 15

Understanding the Concepts and Skills Identify the statistic used to estimate the population linear correlation coefficient.

Textbook: Statistics for the Behavioral SciencesGregory J. Privitera Summarizing Data: Central Tendency - Please show your work An instructor gives students a surprise quiz and records a mean grade of 12 points. What is the new mean value if the instructor does each of the following?  Adds 10 points to each quiz Subtracts 2 points from each quiz Doubles each quiz score Divides each quiz score in half

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Statistical Physics

Homework #6

Information about how study subjects fit into categories (for example: male/female, blonde/brunette, …)     Qualitative data     Quantitative data     Numerical data     Categorical data

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The relative measure of series 1 is greater than the relative measure of series 2. So, which series has greater variability? Series 2 Series do not have variability at all Series 1 Both the series has the same variability

Using Appendix C-1 or Appendix C-2 find the p-value for each test statistic. (Round your answers to 4 decimal places.) Test Statistic p-value (a) Right-tailed test z = +2.74 (b) Left-tailed test z=-2.63 (c) Two-tailed test z=-2.04