Answer:
38 cm
Step-by-step explanation:
The perimeter of the figure is the sum of the lengths of all its sides.
We have two unknown length, so let's find their lengths first.
x= 10 -6= 4 cm
y= 9 -2= 7cm
Let's add all the lengths together to find the perimeter:
Perimeter
= 9 +10 +2 +6 +7 +4
= 38 cm
Answer:
Critical value can be reduced by decreasing confidence levels, for eg, 95% critical value < 99% like that
Or sample size can be increased suitably.
Step-by-step explanation:
The question is the methods that can be used to decrease the margin of error.
For understanding we must understand first how margin of error is calculated
Margin of error = Critical value of test statistic * std deviation/square root of sample size
Thus we find if we want to decrease the margin of error,
Either critical value should be reduced or
Sample size should be increased.
Or std deviation should be reduced.
Critical value can be reduced by decreasing confidence levels, for eg, 95% critical value < 99% like that
Or sample size can be increased suitably.
Normally std deviation cannot be altered for a given sample hence the above two only work out.
Answer:
The total number of boxes of cookies were to sold for the fundraiser is 190 .
Step-by-step explanation:
The number of boxes of cookies sold for fundraiser = 114
The percentage of fundraiser sold = 60 % of the total number of boxes
Let The Total number of boxes = n
So, According to question
The number of boxes of cookies sold for fundraiser = 60 % of the total number of boxes
I.e 60 % of n = 114
Or, × n = 114
Or, 0.6 × n = 114
∴ n =
I.e n = 190
So , number of boxes = n = 190
Hence The total number of boxes of cookies were to sold for the fundraiser is 190 . Answer