Question 3 confidence interval in each case. If the confidence interval cannot b

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Question 3 confidence interval in each case. If the confidence interval cannot be constructed, choose "Cannot be done" Sample size = 12 Sample mean = 94 -Population Standard Deviation-14 Population is normal Sample size 21 , Sample mean 14.2 Population Standard Deviation = 0.18 Population is not normal Sample size 100 Sample mean = 20 Sample Standard Deviation = 4 1. TInterval 2. Cannot be done Sample size = 85 2 Sample mean 1091 3. ZInterva -Sample Standard Deviation 0.18 Population is not normal Sample size 19 Sample mean = 0.26 Population Standard Deviation = 0.08 Population is not normal Sample size = 44 3 Sample mean 0.86 Population Standard Deviation - 0.0021 Hide Feedback

Explanation / Answer

We need to use z test whenever we are given with population standard deviation and t test when we have sample standard deviation. Relating to that, the correct options from bottom to top are as shown below: -

3

2

1

2

2

3

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