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what is the formula for the mean of the sampling distribution of p hat. Choose an SRS of size n from a large population with population proportion p having some characteristic of interest. Here x represents the sample mean S tells us to add xi refers to all the X-values and n stands for the number of items in the data set.
Sampling Distribution Of The Sample Mean X Bar Biostatistics College Of Public Health And Health Professions University Of Florida from bolt.mph.ufl.edu
In other words the number of individuals in the sample who have that characteristic of interest divided by the total sample size n. The sample mean x-bar and the sample proportion p-hat. Httpgooglt9pfIjWe investigate the sampling distribution of p-hat and calculate the probability of observing a c.
In other words if female was hatp_1 the interval would be 00502 to 02746.
When the sample size n is large the sampling distribution of phat is approximately normal. Calculating sample mean is as simple as adding up the number of items in a sample set and then dividing that sum by the number of items in the sample set. P is the probability that a given outcome will occur given a specified sample size. What test can you use to determine if the sample is large enough to assume that the sampling distribution is approximately normal.
