At a hockey game, a vender sold a combined total of 204 sodas and hot dogs. The number of sodas sold was three times the number
1 answer:
Answer:
Step-by-step explanation:
Given that at a hockey game, a vender sold a combined total of 204 sodas and hot dogs.
The number of sodas sold was three times the number of hot dogs sold.
Let no of hot dogs be sold be x then no of sodas sold will be 3x
Total number of sodas and hot dogs
the number of sodas =153
and the number of hot dogs sold=51
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Answer:
99.89% of students scored below 95 points.
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean and standard deviation
, the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:
What percent of students scored below 95 points?
This is the pvalue of Z when X = 95. So
has a pvalue of 0.9989.
99.89% of students scored below 95 points.