BAS471S20HW10-HypothesisTesting.docx - BAS 471 HW10...

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BAS 471 HW10 - Hypothesis TestingYoudue Sunday 4/19/2020 end of day; no late submissions Question 1Specify the null and alternative hypotheses (Ho and HA) so that the following questions can be answered. You can type out Ho and HA in English, or use the relevant symbols; up to you! b.The current inventory control policy was designed using the 90th percentile of the demand distribution (which turned out to be 312). The company need to know, based on the most recent data, if the the 90th percentile has changed. d. You’re curious as to whether the 20th percentiles of MSBA’s 2020 GRE scores has increased from 2010 (assuming two potentially probability distributions are responsible for making the data).Ho: 20th percintile of 2020 GRE scores = 20th percentile of 2010 GRE scoresHA: 20th percintile of 2020 GRE scores > 20th percentile of 2010 GRE scores Question 2 Generate the appropriate one-sided confidence intervals to conduct the following tests. State whether you retain or reject the null hypothesis (and why). Seethe “Using confidence intervals for hypothesis tests” subsection in the “Basics of Hypothesis Tests” section in the notes.
)) c. Ho: 90th percentile = 0.33 vs. HA: 90th percentile > 0.33. For your data, consider the 1202 observations of return rates for codename “Sapphire”. The

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