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Sauron [17]
3 years ago
13

How to find the area under the standard normal curve between z 1.5 and z 2.5?

Mathematics
1 answer:
alisha [4.7K]3 years ago
8 0
It is possible to calculate mathematically the area under the normal curve between any two values of z.
However, tables/software have been developed to give the areas under the normal curve to the left of particular values of z.  The function is the probability of Z<z, or P(Z<z).
The area between two values z1 and z2 (where z2>z1) is therefore 
P(Z<z2)-P(Z<z1).

For example, to find the area between  z1=1.5, z2=2.5
is 
P(Z<2.5)-P(Z<1.5)
=0.99379-0.93319
=0.06060

(above values obtained by software, such as R)
For example, the value P(Z<2.5) can be calculated using
P(Z<2.5)=erf(2.5/sqrt(2))/2+1/2
where erf(x) is a mathematical function that does not have an explicit formula (calculated by summation of series, or tabulated).
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____ more than 9 is 10
mylen [45]
1 more than 9 is 10. 

That is because 10-9 = 1. 
4 0
3 years ago
2(x + 1 ) - 3(x + 5) ≥ 0<br> pls help
Furkat [3]

Answer:

x≤−13

Step-by-step explanation:

isolate the variable by dividing each side by factors that don't contain the variable

6 0
3 years ago
Trevor’s total employment compensation is $33,500. If Trevor has no job expenses and his gross pay is $28,600, then his total em
svetoff [14.1K]

The equation be x/100 * 28,600 = 33,500, then we get 17%.

Trevor's total employee benefits exists 17.1% of his gross pay.

Therefore, the correct answer is option d. 17.1.

<h3>How to find Trevor's total employee benefits?</h3>

If you would like to know Trevor's total employee advantages, you can estimate this utilizing the subsequent steps:

To find the percentage of the total employee benefits x% of $28,600 exists $33,500.

To estimate the value of x, bring the variable to the left side and bring all the remaining variables to the right side. Simplify the values to estimate the result.

x/100 * 28,600 = 33,500

x = 33,500 * 100 / 28,600

x = 117.13% = 117%

117% - 100% = 17%

x = 17%

The correct result would be 17%.

Trevor's total employee benefits exists 17.1% of his gross pay.

Therefore, the correct answer is option d. 17.1.

To learn more about the value of x refer to:

brainly.com/question/12862290

#SPJ9

6 0
1 year ago
Read 2 more answers
Someone help me giving brainliest plz show ur work
goldfiish [28.3K]

Answer:

19.65 left

Step-by-step explanation:

The total amount that he has is 3 * 12 =                   36 dollars.

From this he buys a CD for                          15.00

There is a 9% tax on 15 dollars 15*9/100 =   <u> 1.35</u>

Amount spent =                                                        <u> 16.35</u>

Amount left                                                               19.65

3 0
3 years ago
Read 2 more answers
No explanation needed just the answer please
Otrada [13]

Answer:

53

Step-by-step explanation:

65x- 12  = 43x + 10

65x - 43x = 10 + 12

22x = 22

x = 22/22

<u>x = 1 </u>

(65x- 12) =

65 * 1 - 12 =<u> 53</u>

43x + 10

43 * 1 -12 = <u>53</u>

5 0
3 years ago
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