please only explain how you got the the mean and standard deviation of the sampling proportion.

VSC Normal Approximation According to the May 16,2017 report by Pew Research, 45% of US adults say solar energy is very effective In minimizing air pollution. A sample of 160 U.S adults are surveyed. Let p be the sample proportion of Americans who believe solar energy Is very effective In minimizing alr pollution. 1. What is the population proportion? 0.45 (decimal form) 2. What is the sample size7 160 3. Can the normal approximation be used with this distribution? | Yes, the sample distribution meets the "rule of thumb." 4. What is the mean of the sampling proportion? 5. What is the standard deviation of the sampling proportion? (Round to 4th decimal place) 6. What is the probability that no more than 76 U.S adults of the 160 surveyed believe solar energy is very effective in minimizing air pollution? What Is p ? (decimal form) What Is the z-score? (Round to the hundredths place) What is the probability that no more than 76 U.S. adults of the 160 surveyed believe solar energy is very effective in minimizing air pollution? (decimal form) Please answer all parts of the