In a sample survey taken of 450 residents of a given community, 180 of them indicated that they shop at the local mall at least once per month. What is the standard error of the mean? 0.554 0.023 0.048 0.155

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Q: . In a sample survey taken of 450 residents of a given community, 180 of them indicated that they…

A: Defines that p is true proportion of residents, who shop at the local mall at least once per month.

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Q: 1. What is the 90th percentile of a t-distribution when the sample size is 1?

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Q: Find the sample standard deviation for the following scores: x = 2,45,2,6,3,2,9,10,11,34,64

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Q: SE Mean

A: Country- CHINA Sample size (n) =50 Sample mean (x¯) = 22.5  Standard deviation (σ)=9.75