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VMariaS [17]
3 years ago
10

A normal distribution has a mean of 101 and a standard deviation of 3.4. What is the z-score of 105? Enter your answer, rounded

to the nearest hundredth, in the box.
Mathematics
1 answer:
oee [108]3 years ago
4 0

Answer:

Z-score = 1.18

Step-by-step explanation:

The z-score measures how many standard deviations from the mean a data is

Therefore the z score is the quotient between the difference between a value and the mean and the standard deviation

Z =\frac{X-\mu}{\sigma}

Where

μ is the mean, x is a data of the population and \sigma is the standard deviation

In this case

\mu =101\\\\\sigma = 3.4\\\\X = 105

Then the z-score is

Z = \frac{105-101}{3.4}\\\\Z = 1.18

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Musya8 [376]

Answer:

The correct option is D

Step-by-step explanation:

A categorical variable is a variable that can take on one of a limited, and usually fixed, number of possible values, assigning each individual or other unit of observation to a particular group or nominal category on the basis of some qualitative property. Example of categorical variables are race, sex group and education level.

4 0
3 years ago
Explain the steps involved in adding two rational<br> expressions.<br> DONE
Helen [10]

Answer

Step-by-step explanation: example

5/(X+2). + 2/(X+1)

Common denominator. Is both (X+2)(X+1)

So the first fraction needs (X+1) since it already has (X+2) the second fraction needs ( X+2)

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So multiply 5 with X then 5 with 1 and 2 times X and 2 times 2

5x+5 + 2x+4 / (X+2)((X+1)

Answer 7x+9/ (X+2)(X+1)

8 0
3 years ago
when the smallerof two consecutive integers is added to two times the larger,the result is 17.find the integers
Gnesinka [82]
Formula:

x + 2(x+1) = 17
x + 2x + 2 = 17
3x + 2 = 17
3x = 15
x = 5

So, the answer is 5 and 6

Hope this helped!
7 0
3 years ago
What is product of 3x-4 an 5x^2-2x+6 <br> help me please, please, please
Fofino [41]
(3x-4)(5x^2-2x+6)
15x^3-6x^2+18x-20x^2+8x-24
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4 0
2 years ago
What is the power of a base thats 8
4vir4ik [10]

Answer:

8

Step-by-step explanation:

logic

6 0
3 years ago
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