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# Two dice are rolled find the probability that the sum of observed values is equal to 13?

Updated: 12/13/2022

Wiki User

15y ago

If two dice are rolled, the probability that the sum of observed values is equal to 13 is zero. The sum of two dice can only lie between 2 and 12, inclusive.

Wiki User

15y ago

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Q: Two dice are rolled find the probability that the sum of observed values is equal to 13?
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### Is it significant to get a twelve when a pair of dice is rolled with probability of less than or equal to five tenth?

The probability to get a 12, with two dice, is 1/36.

Yes.

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### A cumulative frequency distribution would provide?

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### What is the chi square test used for?

The chi-squared test is used to compare the observed results with the expected results. If expected and observed values are equal then chi-squared will be equal to zero. If chi-squared is equal to zero or very small, then the expected and observed values are close. Calculating the chi-squared value allows one to determine if there is a statistical significance between the observed and expected values. The formula for chi-squared is: X^2 = sum((observed - expected)^2 / expected) Using the degrees of freedom, use a table to determine the critical value. If X^2 &gt; critical value, then there is a statistically significant difference between the observed and expected values. If X^2 &lt; critical value, there there is no statistically significant difference between the observed and expected values.

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From a probability perspective fair means equal probability.

### What is the differences between equal probability and equal width in measurement?

One is a measure of probability, the other is a measure of width! And neither is the same as equal age, or equal loudness!One is a measure of probability, the other is a measure of width! And neither is the same as equal age, or equal loudness!One is a measure of probability, the other is a measure of width! And neither is the same as equal age, or equal loudness!One is a measure of probability, the other is a measure of width! And neither is the same as equal age, or equal loudness!