THIS IS ALL 1 PROBLEM ON OUR EXAMPLES A random sample of size n = 225 is taken from a population with a population proportion p = 0.55. (You may find it useful to reference the z table.) a. Calculate the expected value and the standard error for the sampling distribution of the sample proportion. (Round "expected value" to 2 decimal places and "standard error" to 4 decimal places.) Expected Value= I THINK THIS IS 123.75 PLEASE EXPLAIN IF WRONG Standard Error= I THINK THIS IS .0011 b. What is the probability that the sample proportion is between 0.50 and 0.60? (Round “z” value to 2 decimal places, and final answer to 4 decimal places.) Probability= I got .0006 but think may be wrong c. What is the probability that the sample proportion is less than 0.50? (Round “z” value to 2 decimal places, and final answer to 4 decimal places.) Probability= rev: 10_10_2019_QC_CS-185589
THIS IS ALL 1 PROBLEM ON OUR EXAMPLES
A random sample of size n = 225 is taken from a population with a population proportion p = 0.55. (You may find it useful to reference the z table.)
a. Calculate the
Expected Value= I THINK THIS IS 123.75 PLEASE EXPLAIN IF WRONG
Standard Error= I THINK THIS IS .0011
b. What is the probability that the sample proportion is between 0.50 and 0.60? (Round “z” value to 2 decimal places, and final answer to 4 decimal places.)
Probability= I got .0006 but think may be wrong
c. What is the probability that the sample proportion is less than 0.50? (Round “z” value to 2 decimal places, and final answer to 4 decimal places.)
Probability=
rev: 10_10_2019_QC_CS-185589
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