24cm^2 is the answer i took the quiz
Answer:
The confidence interval is , in which n is the size of the sample.
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 Z-table as such z has a p-value 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 lower end of the interval is the sample mean subtracted by M. So it is
The upper end of the interval is the sample mean added to M. So it is
The confidence interval is , in which n is the size of the sample.
Answer:
a = 3.5
Step-by-step explanation:
Answer:
Helmets-12
Baseballs-32
Step-by-step explanation:
Given the tax rate as 6% and the reduced prices as $2.25/baseball and $22.50/helmet and that the budget is $400:
The new prices are reduced price plus tax:
Let x be the number of groups of 8 baseballs as well as the number of groups of 3 helmets,therefore:
Substitute for x=4 to find the highest number of baseballs and helmets:
Helmets=4x3=12
Baseball=4x8=32
#Price cost will be 12x23.85+32x2.39=362.68 (balance=37.32)
Hence, Shaw can buy 12 helmets and 32 baseballs and still remain with $37.32
Answer:
Not A Math Person
Step-by-step explanation: