Ira makes an A on 80% of his tests. In the next week, Ira has 5 final exams. He wants to determine the probability that he makes an A on 4 of the 5 tests.

Which simulation design has an appropriate device and a correct trial?

A) Roll a die letting 1 represent Ira making an A and 2-6 represent Ira not making an A. Roll the die four times.
B) Roll a die letting 1 represent Ira making an A and 2-6 represent Ira not making an A. Roll the die five times.
C) Using a table of random digits select a digit between 0 and 9. Let 0-7 represent Ira making an A and 8-9 represent Ira not making an A. Select four digits.
D) Using a table of random digits select a digit between 0 and 9. Let 0-7 represent Ira making an A and 8-9 represent Ira not making an A. Select five digits.

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a, b and c integers and a> 1

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality

Apoll is being conducted at a mall nothingto obtain a sample of the population of an entire country. what is the frame for this type of​ sampling? who would be excluded from the survey and how might this affect the results of the​ survey? what is the frame for this type of​ sampling? a. the frame is people who need new clothes. b. the frame is people who shop at the mall. c. the frame is people who like to shop. d. the frame is the entire population of the country. who would be excluded from the survey and how might this affect the results of the​ survey? a. any person that does not need new clothes is excluded. this could result in sampling bias due to undercoverage. b. any person who does not shop at the mall is excluded. this could result in sampling bias due to undercoverage. c. any person who does not shop at the mall is excluded. this could result in nonresponse bias due to people not participating in the poll. d. there is nobody that is being excluded from the survey.