46. Find the z value to the right of the mean so that 54.78% of the area under t

Question

46. Find the z value to the right of the mean so that 54.78% of the area under the distribution curve lies to the left of it. 69.85% of the area under the distribution curve lies to the left of it. 88.10% of the area under the distribution curve lies to the left of it. a, b, c. 47. Find the z value to the left of the mean so that 98.87% of the area under the distribution curve lies to the right of it. 82.12% of the area under the distribution curve lies to the right of it. 60.64% of the area under the distribution curve lies to the right of it. a. b, c.

Explanation / Answer

46) a) 54.78% i.e. 0.5478

Z value = 0.2946

b) 69.85% i.e. 0.6985

Z value = 0.2451

c) 88.10% i.e. 0.8810

Z value = 0.1894

47) a) 98.87% i.e. 0.9887

Z value = 0.8365

b) 82.12% i.e. 0.8212

Z value = 0.7939

c) 60.64% i.e. 0.6064

Z value = 0.7257

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