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An online retailer ships products from overseas with an advertised delivery date within 10 days. To...

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Statistics

  1. An online retailer ships products from overseas with anadvertised delivery date within 10 days. To test whether or notdeliveries are made within the advertised time, a random sample of36 orders is selected from a normal population. The sample meandelivery time is 12 days, and the known population standarddeviation is 3 days. Conduct the following test of hypothesis usingthe 0.01 significancelevel:                                                                               [4 Marks]

H0: µ ≤ 10

H1: µ > 10

  1. An online retailer ships products from overseas with anadvertised delivery date within 10 days. To test whether or notdeliveries are made within the advertised time, a random sample of36 orders is selected from a normal population. The sample meandelivery time is 12 days, and the known population standarddeviation is 3 days. Conduct the following test of hypothesis usingthe 0.01 significancelevel:                                                                                

H0: µ ≤ 10

H1: µ > 10

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