Write the equation of the line in slope-intercept form that has a slope of -4 and passes through the point (-1, -3).

Which of the following is the result of expanding the series

In the triangle rst, rs = 65 and st = 60. which equation could be used to find the value of angle s?

Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.