1 The Mean Work Week For Engineers In A Start Up Company Is Believed To Be About 50 Hours A Newly Hired Engineer Hopes 1 (16.78 KiB) Viewed 91 times
1 The Mean Work Week For Engineers In A Start Up Company Is Believed To Be About 50 Hours A Newly Hired Engineer Hopes 2 (18.63 KiB) Viewed 91 times
1. The mean work week for engineers in a start-up company is believed to be about 50 hours. A newly hired engineer hopes that it's shorter. She asks ten engineering friends in start-ups for the lengths of their mean work weeks. Based on the results that follow, can she conclude that an engineer from the company works less than 50 hours, on average? Test at 5% level of significance. Data (length of mean work week): 60:45: 42; 50; 55: 35; 40; 40; 42: 38 Test Statistic -value = Conclusion:
2. A corporate claimed that less than 30% of homes in the US were not heated by natural gas. A random sample of 1215 homes found that 297 were not heated by natural gas. Does the evidence support the claim by the corporate? Test at 5% level of significance. Test Statistic = -value = Conclusion:
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