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ladessa [460]
3 years ago
6

Find the z value such that 39% of the standard normal curve lies between −z and z.

Mathematics
2 answers:
zavuch27 [327]3 years ago
3 0
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
zaharov [31]3 years ago
3 0

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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