Answer:
a) CI = ( - 0,0352 ; 0,1472 )
b) The CI include 0 since that means we don´t have sufficient evidence at α = 1 % to support differences between the two proportions
Step-by-step explanation:
From sample 1. ( assigned to surgery)
sample size n = 367
sample proportion p₁ = 245/367 p₁ = 66,8 % or p₁ = 0,668
Then q₁ = 1 - 0,668 q₁ = 0,332
From sample 2. ( assigned to observation )
sample size n₂ = 364
sample proportion p₂ = 223/364 p₂ = 61,2 % or p₂ = 0,612
Then q₂ = 1 - 0,612 q₁ = 0,388
Test Hypothesis is:
Null hypothesis H₀ p₂ = p₁
Alternative Hypothesis Hₐ p₂ ≠ p₁
a) CI ( 99 %) if CI = 99% significance level α = 1 % α = 0,01
α/2 = 0,005 n z-table we look z (c) for 0,005
z(c) = 2,578
CI = ( p₁ - p₂ ) ± z(α/2) √(p₁*q₁) / n₁] + [ p₂*q₂/n₂
CI =(0,668 -0,612 ) ± 2,578 * √(0,668*0,332) /367 + (0,612*0,388)/364
CI = 0,056 ± 2,578*√6,04 *10⁻⁴ + 6,52 *10⁻⁴
CI = 0,056 ± 2,578*3,54*10⁻²
CI = ( 0,056 - 0,0912 ; 0,056 + 0,0912 )
CI = ( - 0,0352 ; 0,1472 )
b) The CI include 0 since that means we don´t have sufficient evidence at α = 1 % to support differences between the two proportions
PLEASE HELP!! Find the amount after 6 years if $1000 is invested at an annual rate of 4% compounded:
a) Annually
Amount - $
b) Semiannually
Amount $
c) Quarterly
Amounts
d) Monthly
Amount: $
A line passes through the point (-8, -7) and has a slope of 5/4
Write an equation in slope intercept form for this line
Plzzz help
Answer:
y = 5/4x + 3
Step-by-step explanation:
Determine two pairs of polar coordinates for the point (12, 12) with 0° ≤ θ < 360°
Answer:
(12[tex]\sqrt{2}\\[/tex], 45°), (-12√2, 225°)
Step-by-step explanation:
....mhm
In full honesty though, this is the right answer
how to solve 13p-6=-33
Answer:
The exact form: =- 27/13
Mixed number form = -2 1/13
Step-by-step explanation:
You move all of the terms that do not contain p to the right side and solve.
Answer:
use g00gle
Step-by-step explanation:
go to g00gle
hit the camera thing n take a picture of yo problem
Please help me please !
Answer:
the one on the left is y=2/3x+1 and the one on the right is y=-4x+5
Step-by-step explanation:
Find the slope of the line.
1.
у
9
|(2,9)
6
(-1,3)
3
-2
o
1 2 3 x
6
9
Its graphing plss i need help
Answer:
The slope is 2
Step-by-step explanation:
Given
[tex](x_1,y_1) = (2,9)[/tex]
[tex](x_2,y_2) = (-1,3)[/tex]
Required
The slope (m)
This is calculated as:
[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]
[tex]m = \frac{3 - 9}{-1 - 2}[/tex]
[tex]m = \frac{- 6}{-3}[/tex]
[tex]m =2[/tex]
The Shoes cost $42
Each pack of socks costs $1.50
Martha has $53 to buy shoes and socks. If Martha buys one pair of shoes, what is the greatest number of packs of socks she can buy?
Answer:
Martha can buy 7 packs of socks.
Step-by-step explanation:
Martha has $53
Shoes = $42
Socks = $1.50 each
First subtract 42 from 53 to figure out how much is left:
⇒ $53 - $42 = $11
then divide the answer by how much each pack of socks cost:
⇒ [tex]\frac{11}{1.50}[/tex] = 7.33
next, take the whole number of the answer and multiply that by $1.50 to figure how much 7 pack of socks cost:
⇒ 7 socks x $1.50 = $10.50
subtract the answer from $11 to figure out how much remains:
⇒ $11 - $10.5 = $0.50
Answer:
She can buy 7 packs of socks
A number more than nine is more than twenty.
write as an inequality
Answer:
I think it is 20 < x > 9. But I am not completely sure.
Nicole bought a pair of shoes for
$37.93. The sales tax was $2.84. How
much money did Nicole spend on the
pair of shoes before taxes?
Answer:
$35.09
Step-by-step explanation:
37.93- 2.84= 35.09
Answer: 35.09$
Step-by-step explanation:
subtract the taxes from the total i think
Mr.Pope is buying Mrs. Pope's flowers. He buys 6 flowers for 10.95 without tax.
How much did he pay for each flower?
a. $2.00
b. $1.82
c. $1.825
d. $1.83
If c=1/3 and b=3 solve 3c divided by (2b to the 2nd power
Answer:
4 1/2
Step-by-step explanation:
3(1/3) divided by 2(3)2nd power
Christine is 4 years younger than Mark. 3 years from now, she will be two-thirds as old as Mark find their present ages.Complete solution
Answer:Mark Is 9 years old; Christine is 5 years old
Step-by-step explanation:
Present age
LET mark age be x
Christine be x-4 yrs
In 3 yrs Time
Mark will be x+3 yrs old
Christine will be (x -4 +3) = x-1 years old
Also, In 3 years time
Christine = 2/3 Mark
such that
x-1 = 2/3(x+3)
x -1= 2x+6 / 3
3x -3= 2x+6
3X--2X = 6+3
=X=9
Mark Is 9 years old
Christine is x -4 = 9-4=5 years old
g (15 points) Suppose 42 out of 600 rats exposed to a potential carcinogen develop tumors. A control group of 350 rats not exposed to the carcinogen develops 13 tumors. Based on these data, computed (a) the relative risk, (b) the attributable risk, and (c) the odds ratio. Do these indicators suggest that there is a relationship between exposure and tumor risk
Answer:
a) The relative risk is 1.8[tex]\overline{846153}[/tex]
b) The attributable risk is [tex]0.69 \overline{047619}[/tex]
c) There is a relationship between exposure and tumor risk
Step-by-step explanation:
The number of exposed rats that develop tumors, a = 42
The number of rats exposed to the carcinogen = 600 rats
The number of exposed rats that did not develop tumors, b = 600 - 42 = 558
The number of not exposed rats in the control group = 350 rats
The number of rats that develop tumors in the control group, c = 13 tumors
The number of not exposed rats that did not develop tumors, d = 350 - 13 = 337 rats
a) The relative risk, RR = a/(a + b)/(c/(c + d))
∴ RR = (42/(42 + 558))/(13/(13 + 337)) = 49/26 = 1.8[tex]\overline{846153}[/tex]
b) The attributable risk = (a - c)/a
∴ The attributable risk = (42 - 13)/42 = [tex]0.69 \overline{047619}[/tex]
c) The odds ratio = (a·b)/(c·d)
∴ The odds ratio = 42 × 558/(13 × 337) = 23439/4381 ≈ 5.35
Given that the result of attributable risk is positive, there is an indication that there is a higher probability to develop tumor when exposed to the potential carcinogen, therefore, there is a relationship between exposure and tumor risk
what is the sum of 6 1/2 + 2 1/3
Answer:
8 5/6
common denominator
Answer:
8 5/6
Step-by-step explanation:
Is this correspondence a function?
A quadrilateral has one pair of parallel sides with lengths 134 inches and 114 inches, and two angles that each measure 36°.
Answer:
Explanation:
1) The two parallel sides of different legths 1\frac{3}{4}143 and 1\frac{1}{4}141 constitute the bases of a trapezoid.
2) The two equal anglesare the base angles of the trapezoid, and mean that it is an isosceles trapezoid.
An isosceles trapezoid is truncated isosceles triangle.
The definition of trapezoid is a quadrilateral with at least two parallel sides.
The drawing is attached: only the green lines represent the figure, the dotted lines just show how this is derived from an isosceles triangle.
Item 13
Write an explicit rule for the recursive rule.
$a_1=16,a_n=0.5a_{n-1}$
Answer:
Step-by-step explanation:
[tex]a_{1}=16[/tex]
[tex]r=\frac{a_{n}}{a_{n-1}} =0.5\\a_{n}=a_{1}r^{n-1}=16(0.5)^{n-1}[/tex]
Write the 0.5% in two other forms (fraction and percent).
Rewrite the funtion of f(x)=5(x-4)^3 + 6 with y instead of x
Answer:
f(y)=5(y-4)^3 + 6
Step-by-step explanation:
Given that
f(x)=5(x-4)^3 + 6
Now we have to rewrite the above function and put y in place of x
i.e.
f(y)=5(y-4)^3 + 6
Therefore the above represent the function in y form
Hence, the same would be relevant
NEED HELP ON THIS ASAP
Answer:
CosF=A/H
CosF=24/25
CosF=0.96
F=Cos^-1(0.96)
F=16°
4. According to the graph above, which of
the following best represents the number of
calories from protein a person on a 2,200-
calorie diet should consume?
A. 450
B. 550
C. 625
D. 650
Answer: B:550. You do percent over 100 equals part over whole.you put 25 as your percent over 100 then you put 2,200 as your whole put x on part then you multiply 25x2,200=55,000 then you dived 55000 and 100 and you get 550
Stacia randomly chooses a number from 1 to 10. What is the probability she
chooses a number less than 4?
Answer:
The probability that she chooses a nuumber less than 4 is 30%
Step-by-step explanation:
Find the area of the figure.
A)41 cm
B)90 cm
C)95cm
D)100cm
Answer:
The answer is B) 90 cm^2
Step-by-step explanation:
The area of the rectangle and the triangle are
[tex]rect = 10 \times 8 =80 \\ tria = 0.5 \times 4 \times 5 = 10 \\ the \: total \: area \: is \: 80 + 10 = 90[/tex]
I hope that is useful for you
The stem-and-leaf plot represents the distances, in miles, people in an office drive to work each morning.
How many people drive 20 miles or fewer to work?
Enter your answer in the box.
A stem-and-leaf plot with a stem value of 1 with a leaf value of 5, 5, 6, 6, 7, 7, 8, 8, a stem value of 2 with a leaf value of 1, 4, 5, 9, and a stem value of 3 with a leaf value of 0, 5, 5, 6.
Key: 1|5 means 15
Answer:
8
Step-by-step explanation:
The x-coordinates of the points (112,−3) and (112,3) are the same and their y-coordinates are opposites. What does this mean in terms of the positions of the points?
Answer:
They are reflected across the x-axis
Step-by-step explanation:
What's the value of (5³)¹. I need a explanation.
Answer:
125
Step-by-step explanation:
We can first multiply the exponent outside the parentheses by the exponent inside the parentheses.
3*1 = 3.
Now we can solve.
5³ = 125
And there is your answer. Hope this helps. Have a nice day.
PLS HELP!!! Angle 3 and Angle 8 are congruent
True or false
Answer:
false
Step-by-step explanation:
Answer:
False
Step-by-step explanation:
something congruent is similar in shape
How many solutions does the nonlinear system of equations graphed below have
Answer:
C. two
Step-by-step explanation:
2 points of intersection
Option C is correct, there are two solutions to the nonlinear system of equations graph.
What is Graph?Graph is a mathematical representation of a network and it describes the relationship between lines and points.
A system of nonlinear equations is a system of two or more equations in two or more variables containing at least one equation that is not linear.
In this case, we have a parabola (the red figure) and a line (the blue figure).
There are three possible types of solutions for a system of nonlinear equations involving a parabola and a line.
No solution. The line will never intersect the parabola.
One solution. The line is tangent to the parabola and intersects the parabola at exactly one point.
Two solutions. The line crosses on the inside of the parabola and intersects the parabola at two points.
Hence, there are two solutions to the nonlinear system of equations graph.
To learn more on Graph click:
https://brainly.com/question/17267403
#SPJ7
D. Problem Solving
11.
A paper balloon costs Php 7.50. What is the cost if I buy 6 balloons?
Solution:
12. My Auntie bought 3 kg of pork and 2.5 kg of chicken. If the pork costs Php110.50 per
chicken?
kilogram and she spent a total of Php580.00, how much did she pay for a 2.5 kg of
Solution:
13.
Item A costs Php22.50 per kilogram and item B costs Php18.25 per kilogram. Which costs less
Solution:
14. Marianne pays Php79.85 each month as membership cost to her gym. How much money does
she pay annually?
Solution:
15. Gary surveyed his classmates at the school and found out that they play sports for about 3.8
hours per week. About how many hours do his classmates spend while playing sports in a year that has 52 Weeks?
Solution
that has 52 weeks?
kg of o
Answer:
11. P7.50 x6 = P45.00
12 P580 - (P110.50 x 3) = P 580 - P 331.5 = P248.50
13. Item B costs less
14. P79.85 x12 months = P958.20
15. Given: 3.8 hours per week
52 weeks x 3.8 hours = 197.6 hours
i don't get how to do this one