In a large city, the population proportion of residents favoring a specific candidate for the probate court judge is p=0.35 . A random sample of n=81 residents is selected. Use p to denote the sample proportion of residents favoring this specific candidate.

1. The mean (or expected value) of the sample proportion p is

0.0530

0.0028

0.0389

0.6500

none of the above

2. The standard deviation of the sample proportion p is closest to

0.0530

0.0028

0.0389

0.6500

none of the above

3.The probability that the sample proportion p is less than 0.30 is closest to

0.8264

0.9435

0.3264

0.1736

none of the above

4.The probability that the sample proportion p is larger than 0.38 is closest to

0.5661

0.2157

0.7157

0.2843

none of the above

5.The probability that the sample proportion p is larger than 0.28 is closest to

0.9066

0.4066

0.0934

0.3209

none of the above