Solution :
Given that,
Point estimate = sample proportion = = x / n =1110 / 1500 = 0.74
1 - = 1 - 0.74 = 0.26
Z/2 = Z0.05 = 1.645
Margin of error = E = Z / 2 * (( * (1 - )) / n)
= 1.645 (((0.74 * 0.26) / 1500)
= 0.019
A 90% confidence interval for population proportion p is ,
- E < p < + E
0.74 - 0.019 < p < 0.74 - 0.019
0.721 < p < 0.759
According to fast food restaurant statistics, 1110 of 1500 randomly selected people report eating out at...
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