If the economy booms, RTF, Inc., stock is expected to return 9 percent. If the economy goes into a recessionary period, then RTF is expected to only return 3 percent. The probability of a boom is 69 percent while the probability of a recession is 31 percent. What is the variance of the returns on RTF, Inc., stock?

Apolling company reported that 57​% of 1013 surveyed adults said that cellular phones are "quite annoying." complete parts​ (a) through​ (d) below. a. what is the exact value that is 57​% of 1013​? the exact value is 577.41. ​(type an integer or a​ decimal.) b. could the result from part​ (a) be the actual number of adults who said that cellular phones are "quite annoying" question mark why or why​ not? a. ​no, the result from part​ (a) could not be the actual number of adults who said that cellular phones are "quite annoying" because that is a very rare opinion. b. ​yes, the result from part​ (a) could be the actual number of adults who said that cellular phones are "quite annoying" because the results are statistically significant. c. ​yes, the result from part​ (a) could be the actual number of adults who said that cellular phones are "quite annoying" because the polling numbers are accurate. d. ​no, the result from part​ (a) could not be the actual number of adults who said that cellular phones are "quite annoying" because a count of people must result in a whole number. c. what could be the actual number of adults who said that cellular phones are "quite annoying" question mark the actual number of adults with this opinion could b