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2 answers:
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Answer:
Number of 5 dollar bills = 23
Number of 10 dollar bills = 13
Step-by-step explanation:
Let number of 5 dollar bills be x
and the number of 10 dollar bills be y
Total $245, means we can write:
5x + 10y = 245
Ten more 5 dollar bills than 10 dollar bills, means:
x - 10 = y
Now we substitute 2nd equation in first and solve for x:
Also,
y = x - 10
y = 23 - 10 = 13
So there are 23 5-dollar bills and 13 10-dollar bills
Answer:
a) Mean, median, mode = 56.5
b)
Step-by-step explanation:
Normally distributed data have the same value for the mean, median and mode. This value is the addition of the maximum value by the minimum, divided by 2.
Also, the standard deviation in a normally distributed sample can be approximated by the following formula:
So
a) Estimate the values of Mean, Median, and Mode.
Highest value = 98
Minimum value = 15
b) Estimate the value of the standard deviation of these data
Max = 98
Min = 15
So