Answer: a) 15, b) 1.
Step-by-step explanation:
A researcher studying public opinion of proposed social security changes obtains a simple random sample of 35 adult Americans and asks them whether or not they support the proposed changes. To say that the distribution of the sample proportion of adults who respond yes, is approximately normal, how many more Americans does the researcher need to sample in the following cases?
(a) 10% of all adult Americans support the changes
Here, 
And , 
So, consider the equality, to find the value of 'n'.
So, there are 
more adult Americans needed.
(b) 15% of all adult Americans supports the changes
Here, 
So, again we get that
So, there are 
more adult Americans needed.
Hence, a) 15, b) 1.
Answer:
59/9
Step-by-step explanation:
d=100. 12/4=3 min/lap
12mins 4 laps. 100/180= 59/9
R=50
2(pie)(50)=100(pie)
I'd say anywhere between 2-3 meters. However, there are many types of doors.
Answer:
Maximum area = Minimum area = 28 m².
Step-by-step explanation:
The length and the width of the rectangle are measured to be 7 m and 4 m respectively to the nearest whole number.
We have to find the maximum and minimum possible areas of the rectangle.
The maximum or minimum area is calculated only when length or width or both can vary and then only for a certain value of length and width the area becomes maximum or minimum.
So, the maximum and minimum area of the rectangle will be the same i.e. (7 × 4) = 28 m². (Answer)
Hope this answer is helpful and correct.
