Standard Error is a measure of how much the point estimate changes from sample to sample. The proportion of heads from flipping five coins has a relatively large standard error (SE = .2236), and it is not uncommon to see point estimates from 0% to 100%. The proportion of heads from flipping 1000 coins has a relatively small standard error (SE = .0158), and points estimates will rarely fall outside 45% to 55% heads P(1 – p) For proportions, the formula is SE = where n is the sample size and p = p, the sample proportion (point estimate). Compute the standard error, given a) point estimate = 0.61, null value = 0.7, and n = 120. The standard error = b) point estimate = 0.42, null value = 0.5, and n = 50. The standard error =

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Standard Error is a measure of how much the point estimate changes from sample to sample. The
proportion of heads from flipping five coins has a relatively large standard error (SE = .2236), and it is not
uncommon to see point estimates from 0% to 100%. The proportion of heads from flipping 1000 coins has a
relatively small standard error (SE = .0158), and points estimates will rarely fall outside 45% to 55% heads.
Р(1 — р)
For proportions, the formula is SE =
where n is the sample size and p = p, the sample
n
proportion (point estimate).
Compute the standard error, given
a) point estimate = 0.61, null value = 0.7, and n = 120.
The standard error =
b) point estimate = 0.42, null value = 0.5, and n = 50.
The standard error =
Transcribed Image Text:Standard Error is a measure of how much the point estimate changes from sample to sample. The proportion of heads from flipping five coins has a relatively large standard error (SE = .2236), and it is not uncommon to see point estimates from 0% to 100%. The proportion of heads from flipping 1000 coins has a relatively small standard error (SE = .0158), and points estimates will rarely fall outside 45% to 55% heads. Р(1 — р) For proportions, the formula is SE = where n is the sample size and p = p, the sample n proportion (point estimate). Compute the standard error, given a) point estimate = 0.61, null value = 0.7, and n = 120. The standard error = b) point estimate = 0.42, null value = 0.5, and n = 50. The standard error =
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