Let z1 be a z score that is unknown but identifiable by position and area. if the symmetrical area between a negative z1 value and a positive z1 value in a standard normal distribution is 0.9544, then the value must be

Step-by-step explanation:

Given that z1 be a Z score that is unknown but identifiable by position and area.

Also given that the symmetrical area between a negative z1 value and a positive z1 value in a standard normal distribution is 0.9544

This can be written as

(Because of symmetry about the mean we have double area on either side)

From std normal table we can find z1 as

1. 8

2. 9

3. 20

4. 3

5. 17

6. 2.2

7. 11.25

8. 1

9. 14

10. 2

step-by-step explanation:

thats the first half

step-by-step explanation:

a cube has 6 sides

the probability of getting 5 on the first cube is 1/6 since only one side of the cube has 5 on it.

there are 3 sides of the cube with even number on it [2,4,6]

therefore the probability of getting even number is 3/6

for both events to happen together, the probability would be

1/6 x 3/6 = 12/36

which simplifies to 1/12