Question: How do we get the z value e- g. what is the Sample size needed when margin ay error to be I given that st.

How do we get the z value e- g. what is

How do we get the z value

e- g. what is the Sample size needed when margin ay error to be I given that st. deviation = 35 of d = 57. 2= 51. 5 2 : 2. 50 - 7 = 1.96 2 ( 1 . 96 ) ( 35 ) n = 188.2384 2 189 5

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