COMM 217 Study Guide - Final Guide: Analysis Of Variance, Hi Scores, Sxs
26 Jan 2015
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1 a) p( x: or p( x. 5 . 4918 . 0082 b) no, th e probability is very small and is therefore very unlikely. 0 insufficient evidence to conclude that mean < 105 b) t. 4 type i : ap proving a below standard shipment type ii: refusing a shipment that is up to standard. Reject h and conclude that there is sufficient evidence. 0 to support the mean emission is less than 77 mg per cubic meter of exhaust. Insufficient evidence to support the airline"s claim. p-value >. 10 b) 6. 09 2. 228. Since 2. 74 > -2. 33, do not reject h0. Assu me standardized test scores follow a normal distribution with =100, =10. Insufficient evidence to support the claim of above average intelligence. p-value = 0. 0. 58. 53% ; 61. 47% true mean falls between 58. 53% and 61. 47% 95% o f the time b) . 07 1. 96 (. 07)(. 93) True proportion of failing is between 2% and 12% c) n (2. 575) (7. 5)
