Find P(z<0.92). Refer to the table of z-scores below. Question 18 options: 0.078

Question

Find P(z<0.92). Refer to the table of z-scores below.

Question 18 options:

0.0788

0.3212

0.8212

1.3212

Find P(1.2<z<1.75). Refer to the table of z-scores below.

Question 19 options:

0.0750

0.4599

0.8212

0.8849

uestion 20 (1 point)

Find P(-1<z<1). Refer to the table of z-scores below.

Question 20 options:

0

0.01587

0.6826

0.843

0.0788

0.3212

0.8212

1.3212

Find P(1.2<z<1.75). Refer to the table of z-scores below.

Question 19 options:

0.0750

0.4599

0.8212

0.8849

uestion 20 (1 point)

Find P(-1<z<1). Refer to the table of z-scores below.

Question 20 options:

0

0.01587

0.6826

0.843

Explanation / Answer

Solution 18:

P (Z < 0.92) = 1 - P (Z 0.92)

P (Z < 0.92) = 1 - 0.1788

P (Z < 0.92) = 0.8212

Solution 19:

Using Z-tables, the probability is

P [1.2 < Z < 1.75] = P [Z < 1.75] - P [Z < 1.2]

P [1.2 < Z < 1.75] = 0.9599 - 0.8849

P [1.2 < Z < 1.75] = 0.0750

Solution 20:

Using Z-tables, the probability is

P [-1 < Z < 1] = P [Z < 1] - P [Z < -1]

P [-1 < Z < 1] = 0.8413 - 0.1587

P [-1 < Z < 1] = 0.6826

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