Given a population where p = 0.10, find the standard deviation of the samping distribution when n = 500

In a population with m=60, a score of X=58 corresponds to a z-score of z=-0.50. What is the population standard deviation?

Given a Normal Distribution with standard error of 8 from a population with a mean of 120 and a standard deviation of 48, then find the sample size (i.e. how many people or items were sampled from the population?).

For a population that has a standard deviation of 22​, figure the standard deviation of the distribution of means for samples of size​ (a)2​, (b)4​, (c)5​ and​ (d)10.

Find the mean and standard deviation for each Poisson: a. A = 6 (Round your standard deviation to 3 decimal places.) Mean Standard deviation b. A = 18 (Round your standard deviation to 3 decimal places.) Mean Standard deviation c. A = 3 (Round your standard deviation to 3 decimal places.) Mean Standard deviation

Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. A single thermometer is randomly selected and tested. Find P87, the 87-percentile. This is the temperature reading separating the bottom 87% from the top 13%.P87 = °C