Homework SourseCalculate the expected value and the standard error for the
Calculate the expected value and the standard error for the sampling distribution of the sample proportion.(Round intermediate calculations to 4 decimal places, \"expected value\" to 2 decimal places and \"standard deviation\" to 4 decimal places.)
What is the probability that the sample proportion is between 0.70 and 0.80? (Round intermediate calculations to 4 decimal places, “z” value to 2 decimal places, and final answer to 4 decimal places.)
What is the probability that the sample proportion is less than 0.70? (Round intermediate calculations to 4 decimal places, “z” value to 2 decimal places, and final answer to 4 decimal places.)
| A random sample of size n = 290 is taken from a population with population proportion P = 0.75. Use Table 1. |
Solution
a) E(X)=217.5 V(X)=53.375
b) .95
c) .025
