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6) To test the claim that proportion of smoker is not 25%, lets suppose we calculated the test value Z= 2.45 then the p-value for this test is Question 6 options: 0.0142 0.9929 0.8621 0.0071 7) For right sided test for proportion, use Z-table to find the critical value when alpha= .08. Question 7 options: 1.24 1.96 2.65 1.405 8) A factory is producing 50000 pairs of shoes. To test the claim that higher than 2% of the shoes are sub standard, we took a sample of 700 pairs and found that 2.75% of them are sub standard quality. Find the test value in this case Question 8 options: 0.0145 1.45 1.417 1.01 9) A factory is producing 50000 pairs of shoes. To test the claim that less than 1% of the shoes are sub standard, we took a sample of 500 pairs and found that 1.45% of them are sub standard quality. Find the critical value if the test is done with 5% level of significance (alpha=5%). Question 9 options: 1.645 1.96 -1.645 -1.96 2. 575 10) Use Z-table to find p-value, if the test value for the left sided test is found to be -2.15 Question 10 options: 0.9842 0.0158 0.0316 0.765 11) If we accept a Null Hypothesis ( H0 ) when it is false, the type of error we have is Question 11 options: Correct decision Type I error Type III error Type II error 12) To test the claim that mean is greater than 8, we took a sample of size 25 and found that the sample mean 9. if the population standard deviation is known to be 2, calculate the test value Question 12 options: 2.5 0.8 0.3 -0.1 -2.5 13) To test the claim that the mean weight is greater than 166.3 lbs. A sample of 40 people showed that the sample mean was 172.55 and sample standard deviation (s) was found to be 26.33 lbs. then the test value is: Question 13 options: t=1.5 Z=1.5 Z=2.5 t=2.5 14) To test the claim that mean weight is greater than 166.3 lbs. A sample of 40 people showed that the sample mean was 172.55. If the population standard deviation is known to be 26.33 lbs. Find the critical value when alpha=5% Question 14 options: 2.58 3.12 1.645 1.96 15) If it is one sided test and alpha=0.05. Find t(alpha) from t-table if sample size is 10. Question 15 options: 2.262 1.228 1.812 1.833 16) The Eagle Ridge Contractors Association claims the average price of a home in their subdivision not $125,150 with a known population standard deviation of $7,360. A sample of 36 homes for sale in this subdivision had an average selling price of $128,550. Find the pvlaue. Question 16 options: 0.0070 0.0035 0.0028 0.0056 17) The Eagle Ridge Contractors Association claims the average price of a home in their subdivision is not $125,150 with a population standard deviation of $7,350. A sample of 36 homes for sale in this subdivision had an average selling price of $123,550. Find the test value. Question 17 options: -1.31 1.9 2.5 1.31 18) To test the claim that the average height of students is greater than 5.2 ft. If we took a sample of size 35 students and calculated the p-value to be 0.035. What is your conclusion? Question 18 options: Reject null hypothesis with 95% confidence. Reject null hypothesis with 99% confidence. Reject null hypothesis with 98% confidence. Reject null hypothesis with 97% confidence. 19) In order to test the claim that population variance is greater than 5.7 a random sample of size 12 is taken. Find the critical value from chi-square table when alpha=10% Question 19 options: 24.725 26.217 17.275 18.549 20) In order to test population variance is greater than 2.5 a random sample of size 12 is taken and the test value is calculated as 22.76. The p value for this test (from Chi-square table) is: Question 20 options: 5%