Question 39 Options (a) to (e) describe situations in which a claim is made. If the claims are to be tested, which of the situations can be tested using the hypotheses: H0:μ=10versus H1 :μ>10 ? a)The owner of a trucking company claims that more than 10% of his employees are female. b)A car-part manufacturer claims that the average size of a particular part differs from the industry standard by no more than 10mm. c)A school teacher claims that the variance of the marks for a biology test is greater than 10%. d)An employee of a consumer watch claims that the average weight of 10kg bags of oranges is more than what is indicated on the packaging. e)In a recent article it says that the average man is 10kg heavier than the average woman.
Questions 40 to 43 are based on the following information: The government is interested in determining the percentage of manufacturing firms that plan to “fight inflation” by following certain voluntary wage-price guidelines. They believe that the percentage is less than 80%. To confirm their beliefs the government takes a random sample of 100 manufacturing firms. Seventy-seven (77) say that they plan to follow the guidelines. Using this sample the government does a hypothesis test using a 5% level of significance. Question 40 Which of the following pairs of hypotheses is used for the hypothesis test?
