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# Res+342+Week+3+Quiz+ - Res 342 Week 3 Quiz Name 1 Suppose...

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Res 342 Week 3 Quiz Name: 1. Suppose the mean salary for an Engineer is believed to be \$60,000.00. A sample of 36 Engineers revealed a mean salary of \$62000. Assuming the standard deviation is \$2,000, can it be concluded that the average salary has increased using a 0.1 level of significance? (PLEASE Show your work) (17 points) a) Define the Hypothesis H0 the mean salary for an engineer is about 60,000.00/y H1 the salary is higher b) Calculate the test statistic 60000-62000 = 5.916 2000/√35 c) Set Rejection Region d) Conclusion Accept H0 2. (Test of Proportions) It is assumed that the percentages of male and female drinkers are the same . A survey showed the proportion of male that are drinkers is 25% and female 24%. The number of respondent from each group was 1000. At 0.05 significance level, can we conclude that proportion of males that are drinkers is more than females? (PLEASE Show your work). (17 points) a) State the hypothesis H0 Males drink more than females H1 females drink more tan males

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Res+342+Week+3+Quiz+ - Res 342 Week 3 Quiz Name 1 Suppose...

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