Answer:
The 90% confidence interval is between a lower limit of 0.7306 and an upper limit of 0.7754.
Step-by-step explanation:
Confidence interval for a proportion is given as p +/- margin of error (E)
p is sample proportion = 753/1000 = 0.753
n is sample size = 1000
confidence level = 90%
critical value corresponding to 90% confidence level and infinity degree of freedom is 1.645
E = critical value×sqrt[p(1-p) ÷ n] = 1.645×sqrt[0.753(1-0.753) ÷ 1000] = 1.645×sqrt[1.85991×10^-4] = 1.645×0.0136 = 0.0224
Lower limit of proportion = p - E = 0.753 - 0.0224 = 0.7306
Upper limit of proportion = p + E = 0.753 + 0.0224 = 0.7754
90% confidence interval is (0.7306, 0.7754)
Answer:
−16,848
Step-by-step explanation:
firstly, evalute whatever is in the parentheses. [3.5 minus 56 equals "-32.5" then the next [-3.4+515 equals "518.4"
then multiply the two numbers: "-32.5 × 518.4"
−16,848 is the answer.. its definitely a weird question.
Answer:3
Step-by-step explanation:
Use equation for slopes: y1- y2/ x1_ x2=
-11-(-5)/-3-(-6)=3
Answer:
A
Step-by-step explanation:
Look at both rectangles and list each of the corners coordinates:
The rectangle on the left has coordinates:
R: (-4,-1)
S: (-1,-1)
T: (-1,-3)
U: (-4,-3)
Now because the rectangle transformed to a different location we should take the coordinates of each of its vertices to find what type of transformation this is:
R' : (4,-1)
S' : (1,-1)
T' : (1,-3)
U' : (4,-3)
We can notice that the difference between both sets of points is that the x-value changes sign and the y-values stay the same, therefore the answer is A
