Find the critical value Za/2 that corresponds to the confidence level 92%.

Is the following relation a function? x y 1 4 −1 −2 3 10 5 16 yes no

Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0

The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period.value01234567frequency367108521(a) in how many weeks were at least 2 bikes sold? (b) in how many weeks were at least 5 bikes sold? (c) in how many weeks were an even number of bikes sold?