1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Licemer1 [7]
3 years ago
7

Absolute value of -18.26

Mathematics
1 answer:
Effectus [21]3 years ago
4 0
The absolute value is 18.26
You might be interested in
Leftmost digit of two numbers are 8 and 3 which is greater
anastassius [24]
8. 8 is greater than 3 and is all the way to theeft. if it was to the right, you'd need more info
6 0
3 years ago
The mean points obtained in an aptitude examination is 159 points with a standard deviation of 13 points. What is the probabilit
Korolek [52]

Answer:

0.4514 = 45.14% probability that the mean of the sample would differ from the population mean by less than 1 point if 60 exams are sampled

Step-by-step explanation:

To solve this question, we have to understand the normal probability distribution and the central limit theorem.

Normal probability distribution:

Problems of normally distributed samples are solved using 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.

Central limit theorem:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, a large sample size can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}

In this problem, we have that:

\mu = 159, \sigma = 13, n = 60, s = \frac{13}{\sqrt{60}} = 1.68

What is the probability that the mean of the sample would differ from the population mean by less than 1 point if 60 exams are sampled?

This is the pvalue of Z when X = 159+1 = 160 subtracted by the pvalue of Z when X = 159-1 = 158. So

X = 160

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

By the Central Limit Theorem

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

Z = \frac{160 - 159}{1.68}

Z = 0.6

Z = 0.6 has a pvalue of 0.7257

X = 150

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

Z = \frac{158 - 159}{1.68}

Z = -0.6

Z = -0.6 has a pvalue of 0.2743

0.7257 - 0.2743 = 0.4514

0.4514 = 45.14% probability that the mean of the sample would differ from the population mean by less than 1 point if 60 exams are sampled

7 0
3 years ago
There are 10 children in a class and 2 of them choose to read a books so what is the probability that a randomly selected presch
kiruha [24]

Answer: a 20% chance

Step-by-step explanation:

All you need to do is 2/10 = .2 = 20%

We do this because if 2 chose to read and there are 10 kids.

8 0
3 years ago
Could someone pls answer
cricket20 [7]
The answer should be 10
4 0
1 year ago
Write 73% as a simplified fraction
Murrr4er [49]

Answer:

73/100

Step-by-step explanation:

73% = 73/100

5 0
3 years ago
Read 2 more answers
Other questions:
  • 98 POINTS FOR THE BEST ANSWER!
    14·2 answers
  • What is the value of the missing number in the sequence<br><br> 4,12,36,__,324,972,2916
    15·1 answer
  • ______is the longest dimension of an object
    6·1 answer
  • If m&lt;VST = (5x + 23) and m&lt;VUT =<br>(8x - 49), find m&lt;SVT​
    7·2 answers
  • Compare the decimals 0.29__0.3
    15·1 answer
  • the radius of a sheridan balloon is increasing at a rate of 3 centimeters per minute. how fast is the volume changing when the r
    14·1 answer
  • Mr. Hammond earns $13.75 per hours and worked 20.5 hours last week. How much did he earn last week?
    12·1 answer
  • What is 5% of $150 dollars?
    6·2 answers
  • Will give brainliest for answer!!!
    12·1 answer
  • Solve x - 2. 6 Greater-than-or-equal-to 9. 4 and graph the solution on the number line. Which statements are true? Check all tha
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!