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pashok25 [27]
3 years ago
12

These questions both go together if you answer them I'll give you brainliest !! :)

Mathematics
1 answer:
lina2011 [118]3 years ago
8 0

Answer: the answer is 2.5

Step-by-step explanation:

I just did that

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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
oee [108]

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

4 0
4 years ago
The sum of three consecutive natural numbers is 540, find the numbers.
vladimir1956 [14]

Answer:

179, 180, 181

Step-by-step explanation:

a +a +1 +a +2 =540

3a +3 =540

3a =540 - 3

3a=537

a=537 :3

a=179 (the first number

b=179 +1 =180 (the second number

c=179 +2 =181 (the third number

5 0
3 years ago
Identify the level of measurement of the​ data, and explain what is wrong with the given calculation. In a​ survey, the favorite
Trava [24]

Answer:

The data are at the   <u>Nominal</u>   level of measurement.

The given calculation is wrong because average (mean) cannot be calculated for nominal level of measurement.

Step-by-step explanation:

The objective here is to Identify the level of measurement of the​ data, and explain what is wrong with the given calculation.

a)

The data are at the <u> Nominal  </u>  level of measurement due to the fact that it portrays the qualitative levels of naming and representing different hierarchies  from 100 basketball, 200 basketball, 300 football, 400 anything else

b) We are being informed that, the average​ (mean) is calculated for 597 respondents and the result is 256.1.

The given calculation is wrong because average (mean) cannot be calculated for nominal level of measurement. At nominal level this type of data set do not measure at all , it is not significant to compute their average​ (mean).

6 0
3 years ago
it takes joey 1/16 of an hour to write one thank you card.How many thank you cards can he make in 3/4 of an hour?
devlian [24]
I hope this helps you

5 0
3 years ago
Which situation could be represented by the graph?
Nady [450]
Linear functions parabola mostly things in algebra
4 0
4 years ago
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