Answer:
Fraction: -35/8
Decimal: -4.375
Step-by-step explanation:
Answer:
A=50
Step-by-step explanation:
assuming you mean 100-A+20-70=0
you need to solve for A, which means add all your numbers together and isolate A.
-A+50=0
A=50
Answer:
We are 95% confident that the percentage of registered voters in the nation planning on voting for Robert Smith is between 49% and 55%.
Step-by-step explanation:
Given that :
Margin of Error = ±3%
Sample Proportion = 52%
Confidence level = 95%
The 95% confidence interval is :
Sample proportion ± margin of error
52% ± 3%
Lower boundary = 52% - 3% = 49%
Upper boundary = 52% + 3% = 55%
The interpretation is that at a given confidence level ; the popukation proportion based on the sample proportion and margin of error is in the confidence interval.
Answer:
1) 0.024
2) 0.033
3) 4.8
4) 0.16
5) 0.084
6) 0.14
Step-by-step explanation:
1. 3 x 0.008 = 0.024
2. 11 x 0.003 = 0.033
3. 12 x 0.4 = 4.8
4. 4 x 0.04 = 0.16
5. 12 x 0.007 = 0.084
6. 7 x 0.02 = 0.14