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umka21 [38]
3 years ago
6

Explain the difference between (-5) to the power 2 and -5 to the power 2 .

Mathematics
1 answer:
laila [671]3 years ago
5 0

Answer:

(-5) to the power of 2 is 25 and -5 to the power to 2 is -25 because minus in not multiplying by antohrer minus

Step-by-step explanation:

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(a) Find z such that the proportion of observations that are less than z in a standard normal distribution is 0.36. (Enter your
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Answer:

a) z = -0.358

b) z = 0.358              

Step-by-step explanation:

We are given a standard normal distribution.

a) We have to find the value of z such that the proportion of observations that are less than z in a standard normal distribution is 0.36.

That is,

P(Z

This value will be calculated with the help of a standard normal table.

From standard normal table we have,

P(z\leq -0.358) = 0.36

Thus, for z equal to -0.358 the proportion of observations that are less than z in a standard normal distribution is 0.36

b) We have to find the value of z such that 36% of all observations from a standard normal distribution are greater than z.

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This value will be calculated with the help of a standard normal table.

= 1 -P( Z > z)=1 - 0.36 = 0.64  

P( z \leq z)=0.64  

Calculation the value from standard normal z table, we have,

P(z \leq 0.358) = 0.64

Thus, 36% of all observations from a standard normal distribution are greater than z equal to 0.358

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