Question

For a standard normal distribution, find the approximate value of P (z less-than-or-equal-to 0. 42). Use the portion of the standard normal table below to help answer the question. Z Probability 0. 00 0. 5000 0. 22 0. 5871 0. 32 0. 6255 0. 42 0. 6628 0. 44 0. 6700 0. 64 0. 7389 0. 84 0. 7995 1. 00 0. 8413 16% 34% 66% 84%.

Answer 1

For a standard normal distribution, the approximate value of P(z≤0.42) is 66%.

What is Standard normal distribution?

The standard normal distribution is a special type of normal distribution where the mean is 0, and the standard deviation is 1.

In order to calculate the value of the P(z≤0.42), we need to check the value of 0.42 in the z-table, As the Z-table is already given and in the table, the value of z is 0.6628, therefore,

$P(z\leq 0.42)\\\\=0.6628 \approx 66\\\\= 66\%$

Hence, For a standard normal distribution, the approximate value of P(z≤0.42) is 66%.

Learn more about Standard normal distribution:

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Answer 2

Answer:

86% is correct

Step-by-step explanation: