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6 February, 01:09

A study is conducted to see if there is evidence that a recorded phone call is more effective than a mailed flyer in getting votes to support a certain candidate. The study assumes a significance level of.

(a) What is the conclusion in the context of this study if the p-value for the test is 0.040?

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  1. 6 February, 02:22
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    P value 0.04 < 0.05 (significance level). So, recorded phone call more effectiveness than mailed flyer to get vote - is considered statistically significant.

    Explanation:

    To test : Effectiveness of recorded phone call compared to mailed flyer, to get vote support for candidates

    Null Hypothesis : There is no difference between effectiveness of recorded call compared to male flyer, to get vote support for candidates.

    Alternate Hypothesis : Recorded phone call is more effective than a mailed flyer in getting votes to support a certain candidate.

    P value reflects the probability of obtaining extreme observed results, against null hypothesis. So, A small p value provides evidence favouring alternate hypothesis.

    At significance level of 5% i. e 0.05 i. e the generally acceptable level of significance : Since p value 0.04 < 0.05, null hypothesis is rejected & alternate hypothesis is accepted. This implies 'Recorded phone call is more effective than a mailed flyer in getting votes to support a certain candidate' is considered to be true (statistically significant).
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