In a normal distribution with mean 3 and variance 49, what are the upper and lower limit scores for the middle 50% of the data? -how do I find the answer from the z-score table?

Follow Math Help Forum on Facebook and Google+

Originally Posted by perron In a normal distribution with mean 3 and variance 49, what are the upper and lower limit scores for the middle 50% of the data? -how do I find the answer from the z-score table? Let and . Your task is to find the value of and . (using whatever way you've been taught to deal with an inverse normal situation). Therefore . Solve for . Use the symmetry of the normal distribution to therefore get .

View Tag Cloud