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loris [4]
2 years ago
13

For a population with μ = 60 , X=81, and σ = 12. Find the z-score for 81.

Mathematics
1 answer:
zepelin [54]2 years ago
8 0

The z-score for 81 is 1.75

<h3>How to determine the z-score for 81?</h3>

The given parameters are:

μ = 60 , X=81, and σ = 12

The z scores is calculated using:

z = \frac{x - \mu}{\sigma}

Substitute the given values

z = \frac{81 - 60}{12}

Evaluate the difference

z = \frac{21}{12}

Simplify

z = 1.75

Hence, the z-score for 81 is 1.75

Read more about z-scores at:

brainly.com/question/25638875

#SPJ1

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The heights of a students(in cm) are:54,52,56,54,58,51.<br><br> Find the median.​
kumpel [21]

Answer:

To answer this question you will use the median height of 156 centimeters and the fact that there are 26 kids in the class to know that the median is not in the data set, therefore it breaks the data into two equal halves with 13 in each half.

There would be 13 less or equal to the median height.

hope i helped ;)

6 0
3 years ago
If d is the midpoint of the segment AC
3241004551 [841]

Based on the statement below,  if d is the midpoint of the segment AC, the  length of the segment AB  is  4.5cm.

<h3>What is the line segment about?</h3>

in the question given,

AC = 3cm,

Therefore,  AD and DC will be = 1.5cm segments each.  

We are given C as the midpoint of segment DB.

So CB = 1.5cm.

The representation of the line segment is:

A-----------D------------C-------------B

     1.5           1.5            1.5

Since AD, DC and CB are each 1.5cm segments. Then the equation will be:

= 1.5 + 1.5 + 1.5

= 4.5

Therefore, The length of the segment AB is 4.5cm.

See full question below

If D is the midpoint of the segment AC and C is the midpoint of segment DB , what is the length of the segment AB , if AC = 3 cm.

Learn more about midpoint  from

brainly.com/question/10100714

#SPJ1

3 0
2 years ago
Find the least common multiple of 6, 3, and 10.
ycow [4]

Answer:

For example, LCM(2,3) = 6 and LCM(6,10) = 30.

6 0
3 years ago
Read 2 more answers
Calculate the amount and the compound interest on Rs 12.000 in 2 years at 10%
mel-nik [20]

Answer:

Amount = p( 1+r/100) ^n

= 12000 ( 1+10/100) ²

= 12000( 10/10+1/10) ²

= 12000( 11/10) ²

= 12000 x 11/10 x 11/10

= 14520 rs.

Compund interest = amount - principal

= 14520 - 12000

= 2520rs.

Next question :- no of men can complete a piece of work in 7 days = 36

No of men can complete a piece of work in 42 day = ( 36 x 7 ) ÷ 42

= 252 ÷ 42

= 6 men

5 0
3 years ago
Factorise B square minus 25 ​
GuDViN [60]

Answer: (b+5)(b-5)

Step-by-step explanation:

both b^2 and 25 are square numbers, so square root both of them to give b and 5, then put into brackets with a + and -

3 0
3 years ago
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