Find the standardized test statistic, t, to test the hypothesis that u1 > M2. Two samples are randomly selected and come from populations that are normal. The sample statistics are given below. n1=25 n2 = 30 x1 = 16 X2= 14 S1 = 1.5 82=1.9 can you explain step by step
and which function I would use on a T1 84 calculator
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Identify the graph of y = ln x + 1.

True or false? a circle could be circumscribed about the quadrilateral below.

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.