Find percentage of adults that have iq in given range
Assume that adults have IQ scores that are normally distributed with a mean of u=105 and a standard deviation o=15. Find the percentage of adults that have an IQ between 94 and 116.
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A distribution with a mean of µ = 62 and a standard deviation of s= 8 is transformed into a standardized distribution with µ= 100 and s= 20. Find the new, standardized score for each of the following values from the original population
For a population with a mean of µ =70, a score of X = 62 corresponds to z = -2.00. What is the population standard deviation?
A 13 m ladder whose weight is 249 N is placed against a smooth vertical wall. A person whose weight is 959 N stands on the ladder a distance 1.2 m up the ladder.The foot of the ladder rests on the ?oor 9.23 m from the wall.Calculate the force exerted
Let X~N(1.3,2) the proportion and find the proportion
Consider a null hypothesis that a new, unapproved drug is unsafe and an alternative hypothesis that a new, unapproved drug is safe. (a) Explain the risks of committing a type I or Type II error.
For a population with µ= 40 and s = 7, find the -score for each of the following X values. (Note: You probably will need to use a formula and a calculator to find these values.)
How many times should a coin be tossed to obtain a probability of equal to or greater than 0.9 of observing at least one head?
How many workers need to be sampled in order to estimate the population proportion of workers who worried about retiring comfortably to within +/- 0.02 with 95% confidence?
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Explain the risks of not reporting the results of your forensic assessment findings accurately. Provide specific examples.
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