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Unformatted text preview: d) This can not be determined without knowing the degrees of freedom. #4 Which of the following is an assumption you must make before you can use t tests? a) The sample is normally distributed. b) The sample is skewed. c) The population is normally distributed. d) The population is skewed. #5 A research article reports results of a study using a t test as t(16) = 2.67, p < .05. This means: a) the result is not significant. b) there were 16 subjects. c) the t score was 16. d) the t score was 2.67. Computation #1 An urban planner is interested in whether people who live in noisy parts of a city have worse hearing. To test this, she administers hearing tests to six randomly selected 18yearolds that have grown up in one of the noisiest parts of the city. Their scores on the hearing test are 16, 14, 18, 18, 20, and 16. This test was designed so that healthy 18 yearolds should score 20. (The variance is not known). What should she conclude?...
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 Winter '10
 AfroditiPanagopoulos

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