Tutorial 08_1_2018_SOLUTIONS_18th April.pdf

# The researcher randomly selects 415 accounting

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figure is lower. The researcher randomly selects 415 accounting companies, and through interviews determines that 303 of these companies have flexible scheduling. Using a 1% level of significance and the critical value approach, test if there is enough evidence to conclude that a significantly lower proportion of accounting companies offer employees flexible scheduling. Ensure that you clearly state your hypotheses, show ALL steps, ALL your working AND interpret your conclusion in context of this question. Let X= number of companies that offer flexible scheduling. n =415; p = 303 415 = 0.7301; α = 0.01 n π =415 x 0.79=327.85 and n(1- π )=415(1-0.79)=87.15 Note that both are greater than 5, hence the normal approximation is valid. Claim: π < 0.79

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