Answer:
And rounded up we have that n=385
Step-by-step explanation:
In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 95% of confidence, our significance level would be given by 
and 
. And the critical value would be given by:
The margin of error for the proportion interval is given by this formula:
(a)
And on this case we have that 
and we are interested in order to find the value of n, if we solve n from equation (a) we got:
(b)
The estimated proportion for this case is 
. And replacing into equation (b) the values from part a we got:
And rounded up we have that n=385
I don't have the answer for the second one, but the answer to number 1 is 9.
6÷2(1 + 2) =
6÷2(3) =
3(3) =
9
Answer:
Step-by-step explanation:
x = 3
7=2
3-2=5
slope is 4/5
Answer:
a. Quantitative
b. Quantitative
c. Qualitative
d. Qualitative
e. Qualitative
Step-by-step explanation:
a. The temperature readings can be quantify and can be represented numerically so, it is quantitative variable.
b. The scores in English test can be quantify and can be represented numerically so, it is quantitative variable.
c. The blood type can be categorized as O plus, O negative, A plus, A negative, AB plus, Ab negative, B plus, B negative and cannot be represented numerically so, it is qualitative variable.
d. The last four digit of social security number take numerical values, yet they are qualitative because these are used as identifiers and mathematical operations of social security don't have meaningful interpretation.
e. The number on the jerseys of 53 football players also takes numerical values yet they are qualitative because these are used as identifiers for players and mathematical operations of number on the jerseys of football players don't have meaningful interpretation.
Answer:
A)9/8
B) 9/17
Step-by-step explanation:
There are 17 total and 8 new so subtract 8 from 17 and u get 9. 17 total. 8 new. 9 used.
