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you explain how to solve this question? If there is an equation that I can use will be appreciated.

70% of students answered question A correctly, 55% of students answered question B correctly, 20% of students answered neither question correctly. What is the percentage of students answered both question A and B correctly?

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14y ago

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Related Questions

What do you mean by Marginal Probabilities under statistical dependence?

What do you mean by Marginal probailities under statistical dependence


What is unsystematic observation mean?

casual observation


What is the deviation mean mean?

There is no statistical term such as "deviation mean".


Is half the observation larger than the mean?

Whether half the observation is larger than the mean depends on the specific values of the data set. If the observation is significantly above the mean, then half of that observation could be larger than the mean. However, if the observation is below the mean, half of it will also be below the mean. Therefore, it varies based on the context of the data being analyzed.


What does skew mean in excel?

Skew is a statistical function. It is used to indicate the asymmetry of a set of values around the mean of those numbers.Skew is a statistical function. It is used to indicate the asymmetry of a set of values around the mean of those numbers.Skew is a statistical function. It is used to indicate the asymmetry of a set of values around the mean of those numbers.Skew is a statistical function. It is used to indicate the asymmetry of a set of values around the mean of those numbers.Skew is a statistical function. It is used to indicate the asymmetry of a set of values around the mean of those numbers.Skew is a statistical function. It is used to indicate the asymmetry of a set of values around the mean of those numbers.Skew is a statistical function. It is used to indicate the asymmetry of a set of values around the mean of those numbers.Skew is a statistical function. It is used to indicate the asymmetry of a set of values around the mean of those numbers.Skew is a statistical function. It is used to indicate the asymmetry of a set of values around the mean of those numbers.Skew is a statistical function. It is used to indicate the asymmetry of a set of values around the mean of those numbers.Skew is a statistical function. It is used to indicate the asymmetry of a set of values around the mean of those numbers.


What does observation mean in statistics?

a row means an observation if there are many rows.


Mean of 25 observation is 36 but mean of first 13 observation is 32 and mean of last 13 observation is 40 find 13nth observation?

25 x36 = 900 13 x 32 = 416 13 x 40 = 520 ----- 936 936-900 = 36 (13th observation)


What does SP mean in statistics?

statistical parodies


Can you use a mean to answer a statistical question?

Yes


Can you use the mean to answer a statistical question?

Yes


Can you use the mean to answer the statistical question?

Yes


What is A countable or measurable observation called?

A countable or measurable observation is referred to as a "quantitative observation." This type of observation involves data that can be expressed numerically, allowing for statistical analysis and comparison. In contrast, qualitative observations are descriptive and subjective, focusing on characteristics that cannot be measured numerically. Quantitative observations are essential in scientific research for drawing objective conclusions.

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