Answer:
80.78% of families spend less than $7000 annually on food and drink
Step-by-step explanation:
Problems of normally distributed samples can be 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 percentage of families spend less than $7000 annually on food and drink?
This is the pvalue of Z when X = 7000. So
has a pvalue of 0.8078
80.78% of families spend less than $7000 annually on food and drink
Answer:
The company earned $4,350 by selling jerseys in October and April combined.
Step-by-step explanation:
We know that each jersey is worth $50.
They sold a total of 87 jerseys in October and April combined (32 + 55)
To find out how much money the company earned during these two months, multiply the jersey cost by the number of jerseys they sold:
50 x 87 = 4350
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Answer: the answer is 14 i did it in my head and im having trouble explaining it to you, sorry.
5×9/10=4.5
9/10 1 8/10 2 7/10 3 6/10 4 5/10
---------------l--------------l---------------l----------------l----------------
5 5/10=4 1/2=4.5
Answer:
D 20 *1.10 * 1.05
Step-by-step explanation:
We have 19.8 tons of wheat. That is close to 20 tons
We increase by 9.8 percent. 9.8% is close to 10%
When we increase, that is 100% of what we had plus the increase, so we multiply by 100 +10% or 110%. In decimal form that is 1.1
20 *1.10
Then the next year we increase by 5.1%. That is close to 5%
We have 100% plus the 5% or 105%, which in decimal form is 1.05
We multiply what we had (20 *1.10) by 1.05
20 *1.10 * 1.05
This is the total amount we have
