Answer:
So then the minimum sample to ensure the condition given is n= 38
Step-by-step explanation:
Notation
represent the sample mean for the sample
population mean (variable of interest)
represent the population standard deviation
n represent the sample size
ME = 4 the margin of error desired
Solution to the problem
When we create a confidence interval for the mean the margin of error is given by this formula:
(a)
And on this case we have that ME =4 and we are interested in order to find the value of n, if we solve n from equation (a) we got:
(b)
The critical value for 96% of confidence interval now can be founded using the normal distribution. The significance is
. And in excel we can use this formula to find it:"=-NORM.INV(0.02;0;1)", and we got
, replacing into formula (b) we got:
So then the minimum sample to ensure the condition given is n= 38
Yes, an angle less than 90 degrees is acute.
Answer:
G(6,2)
Step-by-step explanation:
If point
is the midpoint of the segment GJ, where
and
, then

In your case,
therefore,

Thus,

we can conclude that the last digit of the product of all the numbers between 11 and 29 is 0.
<h3>What is the last digit of the product of all the numbers between 11 and 29?</h3>
Here we want to find the last digit of the product between all the whole numbers larger than 11 and smaller than 29.
Then we have the product:
P = 12*13*14*15*16*17*18*19*20*21*22*23*24*25*26*27*28
Now, notice that there is a 20 there.
Any number times 20 will end with a zero, then:
P = 20*(12*13*14*15*16*17*18*19*21*22*23*24*25*26*27*28)
Only with that, we can conclude that the last digit of the product of all the numbers between 11 and 29 is 0.
If you want to learn more about products:
brainly.com/question/10873737
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Answer:
Step-by-step explanation:
1) y = 3x -------------(I)
y = 4x - 5 -------------(II)
Plug in y= 3x in equation (II)
3x = 4x - 5
3x + 5 = 4x
5 = 4x - 3x
5 = x
x= 5
Plug in s = 5 in equation (I)
y = 3*5 = 15
x = 5
y = 15