Find the z value such that 39% of the standard normal curve lies between −z and z.
2 answers:
Use symmetry and find z so that probability is: (100-39)/2 =61% =30.5%~0.305 From the z-table: z=-0.51 Answer: -0.51
Answer:
Value of Z =0.51
Step-by-step explanation:
Given that P(-z<0<z) = 0.39
Or P(0<z) = 0.39/2 = 0.195
From standard normal table we find that
0.51 satisfies that
P(0<z<0.51) = 0.195
Hence value of z = 0.51
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