Consider the following proportion:
2 answers:
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Complete Question
The complete question is shown on the first uploaded image
Answer:
The confidence interval is
Step-by-step explanation:
From the question we are given the following data
The following heights are
66, 65, 67, 62, 62, 65, 61, 70, 66, 66, 71, 63, 69, 65, 71, 66, 66, 69, 68, 62, 65, 67, 65, 71, 65, 70, 62, 62, 63, 64, 67, 67
The sample size is n =32
The confidence level is % = 0.95
The mean is evaluated as
=>
=>
The standard deviation is evaluated as
Now
=>
=>
=>
The level of significance is evaluated as
The degree of freedom is evaluated as
The critical values for the level of significance is obtained from the z -table as
The confidence interval is evaluated as
substituting values
=>
