Answer: c. We are 95 percent confident that the proportion of people in the sample who think climate change is a problem is between 0.146 and 0.214.
Step-by-step explanation:
Interpretation for 95% confidence interval :
A person can be 95% confident that the true population parameter lies in it.
By considering the given information , we have
population parameter→ p (Proportion of people who think climate change )
95 percent confidence interval = (0.146, 0.214)
Interpretation : We can be 95% confident that the true population proportion of people who think climate change lies between 0.146 and 0.214.
So , the correct answer is
c. We are 95 percent confident that the proportion of people in the sample who think climate change is a problem is between 0.146 and 0.214.
Answer:
Y = 40
Step-by-step explanation:
Change 1/2 to 2/4
2/4 y + 6 = 3/4y - 4
subtract 2/4y
6 = 1/4y -4
add 4
10 = 1/4y
multiply by 4 to get fraction to 1y or y
y = 40
9514 1404 393
Answer:
Step-by-step explanation:
If x is an odd integer, the next greater odd integer is x+2. The product is said to be 63, so the equation is ...
x(x +2) = 63
__
The equation can be rewritten as ...
(x +1)² = 64
x = -1 ±√64 = -1 ±8
The positive solution is x=7, so the positive set of integers is {7, 9}.
The negative solution is x=-9, so the negative set of integers is {-9, -7}.
Answer:
2.5%
Step-by-step explanation:
interest = principal * rate * time
1200 = 8000r6
1200 = 48000r
r = 0.025
Rate for account is 2.5%
