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Statistics

Statistics deals with collecting, organizing, and interpreting numerical data. An important aspect of statistics is the analysis of population characteristics inferred from sampling.

36,756 Questions

Define continuous random evevt?

Usually we consider a random variable which assigns a value to the outcome of an event. The value assigned to the outcome can be either discrete or continuous. The continuous random variable is a random variable whose domain is defined over a continuous range.

Examples: Daily inches of rain, speed of cars on highway, purchases made everyday at grocery stores.

What is the median of 10 12 24 36 42 53?

The median for this set is the average of 24 and 36, which is 30.

When I try to downgrade your ipod touch from 2 2 1 to 2 1 I get an error message saying The ipod could not be restored An unknown error occurred 20 Help?

You first need to put it in DFU mode, then restore, or if you are trying to Jailbreak it, you need to restore to OriginalFW.ipsw and then follow the jailbreak instructions.

What is the probability of when you roll a dice you will get a higher number than the number you got the last you rolled the dice?

5/12

Consider the possibile outcome of two rolls of a die (where order matters):

(1,1)

(1,2)

(1,3)

.

.

.

(4,6)

(5,6)

(6,6)

There are 6*6=36 possible outcomes. Of these, the following would achieve the result desired:

(1,2)

(1,3)

(1,4)

(1,5)

(1,6)

(2,3)

(2,4)

(2,5)

(2,6)

.

.

.

(5,6)

For the first die equal to 1, there are 5 successful results. For the first die equal to 2, there are 4 successful results....For the first die equal to 5, there is 1 successful result. The total number of successful outcomes=5+4+3+2+1.

So the probability that the desired outcome is obtained=(5+4+3+2+1)/36=15/36=5/12.

A standard dice is rolled 10 times withthe out come 2 1 3 2 5 1 0 in this order you can you make it where it is less or equal to 8?

The lowest number I can roll on a die is 1.

In ten rolls, that's a minimum of ten; I cannot make it 8 or less.

Zero is a foul throw.

Solutionsn of Moment-generating functions?

Your question did not identify one distribution in particular. I have provide in the related link the moment generating functions of various probability distributions.

How many combinations of three out of thirty one?

If the sequence of the three makes a difference, there are (31 x 30 x 29) = 26,970.

If the sequence of the three doesn't matter, there are (31 x 30 x 29) / (3 x 2 x 1) = 4,495.

Whatr does the number 30 mean?

The number 30 is one more than 29 and one less than 31, it is also 6 lots of 5, 3 lots of 10 or 2 lots of 15

What is the median of 10 13 14 27 35 42?

There are six numbers, so the median is the mean of the third and fourth (when ordered).

Median = (14+27)/2 = 41/2 = 20.5

What does current research indicate about narcolepsy?

Researchers are hopeful that new treatments will releive the genetic mutation. Also, a number of drugs are being tested to improve daytime sleepiness.