Answer:
(A) With 99% confidence, the proportion that favours the Green initiative is between 418.895 and 423.105 (no approximation; answers were gotten exactly in 3 decimal places).
(B) If many groups of 593 (greater than the initial sample size of 556) randomly selected Americans were surveyed then a different confidence interval would be used or produced from each group.
About 90% of these confidence intervals will contain the true population proportion of Americans who favour the Green initiative and about 10% will not contain the true population proportion.
Step-by-step explanation:
(A) 99% of 421 = 416.79
421 - 416.79 = 4.21
4.21 ÷ 2 = 2.105
(421-2.105), (421+2.105)
The lower and upper limits are:
[418.895 , 423.105]
(B) A wider confidence interval such as 90% will be better suited in a case of multiple samples like this.
Answer:
Step-by-step explanation:
calculate x for this equation
f(x) = -5 : -4x +2 = - 5 so : -4x =-7 x = 7/4
f(x) = 2 : -4x +2 = 2 so : -4x =0 x = 0
f(x) =6 : -4x +2 = 6 so : -4x =4 x = -1
f(x) = 18 : -4x +2 = 18 so : -4x =16 x = - 4
the domain is : D = {7/4, 0, -1, -4}
Answer:
Do you think this is easy
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
8-5=3
1/4;2/5;83/100;3/2;7/10;4/5