You have a 1.5 litre bottle of water and drink 295 millilitres. Your friend drinks 135 millilitres. How much is left?
1 answer:
Convert liters to milliliters so that you have one unit for all of the amounts in the question.
1 liter is equal to 1000 milliliters, so multiply the 1.5 liters you have by 1000:
Since you drank 295 milliliters, and your friend drank 135 milliliters, you will subtract those values from the amount in the bottle:
There is 1070 milliliters of water left in the bottle.
If you want to find the amount remaining in the bottle in liters, divide the amount remaining by 1000 to convert milliliters to liters:
Converted back into liters, there is 1.07 liters of water left in the bottle.
1 liter is equal to 1000 milliliters, so multiply the 1.5 liters you have by 1000:
Since you drank 295 milliliters, and your friend drank 135 milliliters, you will subtract those values from the amount in the bottle:
There is 1070 milliliters of water left in the bottle.
If you want to find the amount remaining in the bottle in liters, divide the amount remaining by 1000 to convert milliliters to liters:
Converted back into liters, there is 1.07 liters of water left in the bottle.
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Answer:
The Cohen's D is given by this formula:
Where represent the deviation pooled and we know from the problem that:
represent the pooled variance
So then the pooled deviation would be:
And the difference of the two samples is , and replacing we got:
And since the value for D obtained is 0.5 we can consider this as a medium effect.
Step-by-step explanation:
Previous concepts
Cohen’s D is a an statistical measure in order to analyze effect size for a given condition compared to other. For example can be used if we can check if one method A has a better effect than another method B in a specific situation.
Solution to the problem
The Cohen's D is given by this formula:
Where represent the deviation pooled and we know from the problem that:
represent the pooled variance
So then the pooled deviation would be:
And the difference of the two samples is , and replacing we got:
And since the value for D obtained is 0.5 we can consider this as a medium effect.