The answer would be -4 3/20. If you divide 83 by 20 you will get 4 R3 resulting in the mixed number -4 3/20
15(5) , 25(3) , 75(1)
That said
Answer:
#3
Step-by-step explanation:
Answer:A gaming store can sell at most $3400 worth of games and controllers per day. Each game costs $40 and each controller costs $65. The store can ship a maximum of 20 items per day. Write a system of linear inequalities to represent this scenario.
Step-by-step explanation:
Answer:
151 students must be selected.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
That is z with a pvalue of , so Z = 1.96.
Now, find the margin of error M as such
In which is the standard deviation of the population and n is the size of the sample.
The population standard deviation is known to be $25.
This means that
How many students must be randomly selected to estimate the mean weekly earnings of students at one college? Sample mean within $4 of the population mean
This is n for which M = 4. So
Rounding up:
151 students must be selected.