Statistics: Ch 9 Hypothesis Testing (30 of 35) Example Problem #1

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Given: Population, mu=100, sigma=12; sample n=50, x-bar=96, alpha=0.01
Find: null hypothesis=?, alternative hypothesis=?, confidence interval=?, …, Z-score for x-bar=T=?, reject or not=? Example 1

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[jayapradhanch]

quality control analyst finds that on average the sample passes the test 4 times out of 5. If the sample is tested 4 times, what is the probability of: (a) Sample passing more than 2 times (b) At least 3 failures whatisa explain please try me