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Lesson 2. Identifying and Computing for the Length of the Confidence Interval A Directions: Read and analyze each item carefully and choose the letter of the best answer. Use mitra sheets if necessary 1 Which of the following formulas is used to get the margin of error? 2, Which of the following symbols is used for critical values? an 3 Given n=75, a =0.8, level of confidence is 90%. What is the margin of error in the given data? 2 0 189 6 0 191 C 0 218 d. 0.220 4 What is the critical value of having a 90% confidence level? a 1.28 b 1 44 C. 1.645 d. 210 5 A sample size of 50 has a mean of 20 The population standard deviation is 18 and Ine confidence level to be used is 95% What is the length of the confidence interval? a 9.98 b 10 25 C 11 24 d. 14.29 B.) Identify the length of the confidence interval. a. X = 104 E = 43: LLE UL=