School is Cool. The ORH ASB wants to determine if their efforts at increasing school spirit have been successful. Kenny, Katrina and Sally conduct a survey where they take an SRS of 250 students at the
school and ask them if they have more school spirit now than at the beginning of the school year. Of the
250 surveyed, 91 of them said they did. Does this provide strong evidence that more than a third of the
students are more spirited now than they were at the beginning of the year?

Aline passes through 3,7 and 6,9 what equation represents the line

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x