Mathematics, 25.06.2019 09:40 Jennifer312332
1) (2 points) the amount customers buy is a direct result of how much time they spend in a store. a study of average shopping times in a large national houseware store gave the following information: women with a female companion, average time spent in store = 8.3 minutes women with a male companion, average time spent in store = 4.5 minutes a) (1 point) suppose you want to set up a statistical test to challenge the claim that a woman with a female friend spends an average of 8.3 minutes shopping in such a store. what would you use for the null and alternative hypotheses if you believe this average shopping time is less than 8.3 minutes? is this a lower one-sided test, an upper one - sided test or a two-sided test? b) (1 point) what would you use for the null and alternative hypotheses if you believe the average shopping time is different than 8.3 minutes? is this a lower one-sided test, an upper one - sided test or a two-sided test?
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Agroup of student volunteers participates in a study designed to assess several behavioral interventions for improving output in a repetitive task. prior to the beginning of the study, all volunteers unknowingly observed, and their output is measured. at the beginning of the study, prior to any intervention, the volunteers perform the same task under the observation of a study administrator, and their overall output increases. which of the following terms describes this phenomenon? a. simpson's paradox b. hawthorne effect are d. novelty effect d. pygmalion effect e. observer-expectancy effect
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1) (2 points) the amount customers buy is a direct result of how much time they spend in a store. a...
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