In a carnival game, you roll 2 dice. if the sum is 5, you receive a $6 payoff. if the sum is 10, you receive a $9 payoff. otherwise, you receive no payoff. what is the expected payoff? (round your answer to two decimal places.)

Y+ 2/y is it a polynomial in one variable or not? and if so, why?

Vertical angles must check all that apply

The survey of study habits and attitudes (ssha) is a psychological test that measures the motivation, attitude toward school, and study habits of students, scores range from 0 to 200. the mean score for u. s. college students is about 115, and the standard deviation is about 30. a teacher who suspects that older students have better attitudes toward school gives the ssha to 55 students who are at least 30 years of age. the mean score is 113.2. assume the population standard deviation is 30 for older students what is the margin of error for a 95% confidence interval for the population mean score for a. older students? b. compute the 95% confidence interval for the population mean score for older students. c. compute the 99% confidence interval for the population mean score for older students. d. compute the 88% confidence interval for the population mean score for older students.