The specifications for the production of a certain alloy contains 36% copper. A sample of 10...

 

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The specifications for the production of a certain alloy contains 36% copper. A sample of 10 analyses of the product showed a mean copper content of 37.08% and a standard deviation of 0.17 %. Can we conclude at 0.01 significance levels that the product meets the required specifications? 1. Choose the null hypothesis and alternative hypothesis. (10% marks) 2. Choose the type of test(one sided or two sided) and statistical method. (10% marks) 3. Choose the test statistics value and table value. (60% marks) 4.Choose the conclusion of the test. (20% marks) Choose exactly four answers. For any wrong selection mark will be reduced from the total. O. Answer 3: Test Statistic value = 19.06, Table value -3.250 b. Answer 4: Alternative hypothesis is rejected O. Answer 4: Null hypothesis is rejected Od Answer 4: Null hypothesis is acepted Oe Answer 1: H.0 36.0 and H.1> 36.0 OL Anower 1: HO is equal to 36.0 and H1 is not equal to 36.0 Og Anower 3. Test Statistic value - 655.92. Table value = 2.821 Oh Answer 2: Left tail test Z test O Answer 2 Two tail test, T test OL Answer 1: H0> 36.0 and H1<36.0 OK. Answer 3: Test Statistic value = 0.06, Table value = 1.645 OL. Answer 2 Right tall test, F-test The specifications for the production of a certain alloy contains 36% copper. A sample of 10 analyses of the product showed a mean copper content of 37.08% and a standard deviation of 0.17 %. Can we conclude at 0.01 significance levels that the product meets the required specifications? 1. Choose the null hypothesis and alternative hypothesis. (10% marks) 2. Choose the type of test(one sided or two sided) and statistical method. (10% marks) 3. Choose the test statistics value and table value. (60% marks) 4.Choose the conclusion of the test. (20% marks) Choose exactly four answers. For any wrong selection mark will be reduced from the total. O. Answer 3: Test Statistic value = 19.06, Table value -3.250 b. Answer 4: Alternative hypothesis is rejected O. Answer 4: Null hypothesis is rejected Od Answer 4: Null hypothesis is acepted Oe Answer 1: H.0 36.0 and H.1> 36.0 OL Anower 1: HO is equal to 36.0 and H1 is not equal to 36.0 Og Anower 3. Test Statistic value - 655.92. Table value = 2.821 Oh Answer 2: Left tail test Z test O Answer 2 Two tail test, T test OL Answer 1: H0> 36.0 and H1<36.0 OK. Answer 3: Test Statistic value = 0.06, Table value = 1.645 OL. Answer 2 Right tall test, F-test