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    Testing of Hypothesis

    A company developed synthetic coffee and claim that coffee drinkers could not distinguish it from the real product. A number of coffee drinkers challenged the company's claim, saying that the synthetic coffee tasted synthetic. In a test, carried out by an independent consumer protection body...
  2. Y

    Testing of hypothesis

    Mrs Da Silva is running for president. She claims to have 60% of the population supporting her. She is suspected of overestimating her support and a random sample of 12 people are asked whom they support. Only four say Mrs Da Silva. Test, at 5% significance level, the hypothesis that she has...