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1 answer:
Answer:
The two-liter bottle of soda has a unit price of $0.028/ounce.
The case of twelve 12 ounces has a unit price of $0.021/ounce.
The case of twelve 12 ounce can is the better bargain.
Step-by-step explanation:
A two-liter bottle of soda i.e. 67.6 ounces cost $1.89.
So, the unit price (price/ounces) of this type of soda is dollars per ounce.
Again, a case of twelve 12 ounce cans of the same soda costs $2.99.
So, the unit price (price/ounces) of this type of soda is dollars per ounce.
Therefore, the case of twelve 12 ounce can is the better bargain. (Answer)
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Answer:
The upper 20% of the weighs are weights of at least X, which is , in which
is the standard deviation of all weights and
is the mean.
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean and standard deviation
, the z-score of a measure X is given by:
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 p-value, we get the probability that the value of the measure is greater than X.
Upper 20% of weights:
The upper 20% of the weighs are weighs of at least X, which is found when Z has a p-value of 0.8. So X when Z = 0.84. Then
The upper 20% of the weighs are weights of at least X, which is , in which
is the standard deviation of all weights and
is the mean.