Question

A television channel claims that 25% of its programmes are nature programmes. Xavier thinks this claim is incorrect. To test his hypothesis, he chooses 20 programmes at random and carries out a hypothesis test at 10% significance level
a) Define the random variable, stating its parameters, and write down the two hypotheses.
b) If there are only two nature programmes, calculate the test statistic. What conclusion does Xavier reach?

Answer 1

Answer:

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