Question
A random sample of sizen= 290 is taken from a population with population proportionP= 0.75. a. Calculate the expected value and the standard error for
A random sample of sizen= 290 is taken from a population with population proportionP= 0.75. |
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 | |
Standard error |
b. | What is the probability that the sample proportion is between 0.70 and 0.80?(Round z value to 2 decimal places, and final answer to 4 decimal places.) |
Probability |
c. | What is the probability that the sample proportion is less than 0.70?(Round z value to 2 decimal places, and final answer to 4 decimal places.) |
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