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Dima020 [189]
3 years ago
12

Plot the following points on a number line 2/3, 1/6 & 4/10

Mathematics
1 answer:
lora16 [44]3 years ago
3 0
1/6 then 4/10 then 2/3
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A community college has a math placement exam that has a mean of 65 and a standard deviation of 8.2. If a student takes the exam
Marat540 [252]

Answer:

The score that cuts off the bottom 2.5% is 48.93.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

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

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

\mu = 65, \sigma = 8.2

What is the score that cuts off the bottom 2.5%

This is X when Z has a pvalue of 0.025, so X when Z = -1.96.

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

-1.96 = \frac{X - 65}{8.2}

X - 65 = -1.96*8.2

X = 48.93

The score that cuts off the bottom 2.5% is 48.93.

8 0
3 years ago
Read 2 more answers
The sum of this 4 digit even number's thousands and ones digit is 10
Vladimir [108]
Even
means ends with 0,2,4,6,8

adds to 10
the last number cannot be 0 because the first cannot be add to 10

it can be
8xx2
6xx4
4xx6
8xx2

where x is any whole number you want
4 0
3 years ago
Julio says, "if you subtract 14 from my number amd multiply the difference by -6, the results is -72." What is julios number
jarptica [38.1K]
The correct answer is 26
6 0
2 years ago
X
Rufina [12.5K]

Answer:

$1864

Step-by-step explanation:

11% of 1200=132

132×2(years)=264

1200+264=1864

8 0
2 years ago
Add.<br><br> 105.8 + 87.28<br><br> Enter your answer in the box.
Simora [160]

Answer:

193.08

Step-by-step explanation:

Your Welcome :D

Can i have brainlest

4 0
3 years ago
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