Answer:
thanks
Step-by-step explanation:
Một ông 43 tuổi đến khám tổng quát. Phân tích nước tiểu thấy có đường niệu. Bạn vừa biết có một test T dung phát hiện bệnh tiểu đường như sau: 138 cho T+ trên 150 người bị tiểu đường và 24 cho T+ trên 150 người không bị tiểu đường. a) Tìm độ nhạy, độ chuyên, dương giả, âm giả của T b) Bằng phương pháp thử máu (T’) có độ nhạy 0.8; độ chuyên 0.96; đem áp dụng cho hai nhóm trên thì giá trị đoán trước là bao nhiêu nêu T’ dương tính. c) Với bệnh nhân này, nếu T dương tính bạn cho là có khả năng 90% bị tiểu đường còn nếu T' cũng dương tính thì khả năng bị tiểu đường là bao nhiêu
Answer:
Step-by-step explanation:
Determine the slope of the line 8x – 4y - 9 = 0.
О.
O2
03
04
Answer:
The slope in this equation is 2x, so answer is 2.
Step-by-step explanation:
8x-4y-9=0
-8x -8x
-4y-9 = -8x
+9 +9
-4y = -8x+9
Divide by 4 on both side to have y by itself and you get
y = 2x - 9/4
3. A random sample of 100 people was taken. There were sixty people who favored Brand A. We are interested in determining whether or not the proportion of the population in favor of Brand A is significantly more than 55%. At a 0.05 level of significance, it can be concluded that the portion of the population in favor of Brand A is ____. a. Significantly greater than 60% b. Not significantly greater than 55% c. Not significantly greater than 60% d. Significantly greater than 55% e. None of the above
Testing the hypothesis, it is found that the correct option is:
b. Not significantly greater than 55%.
At the null hypothesis, we test if the proportion is not significantly more than 55%, that is:
[tex]H_0: p \leq 0.55[/tex]
At the alternative hypothesis, we test if the proportion is significantly more than 55%, that is:
[tex]H_1: p < 0.55[/tex]
The test statistic is given by:
[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]
In which:
[tex]\overline{p}[/tex] is the sample proportion. p is the proportion tested at the null hypothesis. n is the sample size.For this problem, the parameters are:
[tex]p = 0.55, n = 100, \overline{p} = \frac{60}{100} = 0.6[/tex]
Hence, the value of the test statistic is:
[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]
[tex]z = \frac{0.6 - 0.55}{\sqrt{\frac{0.55(0.45)}{100}}}[/tex]
[tex]z = 1.01[/tex]
The p-value of the test is the probability of finding a sample proportion above 0.6, which is 1 subtracted by the p-value of z = 1.01.
Looking at the z-table, z = 1.01 has a p-value of 0.8438.
1 - 0.8438 = 0.1562.
The p-value of the test is 0.1562 > 0.05, which means that the proportion is not significantly greater than 55%, and option b is correct.
A similar problem is given at https://brainly.com/question/24330815
Write the Natural numbers after 10,999,11,009,11,001
Answer:
The next three natural numbers after 10999 are 11000,11001, and 11002.
Step-by-step explanation:
Write first natural number after 10999:
10999 + 1 = 11000
Write second natural number after 11000:
11000 + 1 = 11001
Write the third natural number after 11001:
11001 + 1 = 11002
Hence, the next three natural numbers after 10999 are 11000, 11001, and 11002.
2/3 : 2/6 as a unit rate
Answer:
3/1
Step-by-step explanation:
For which of the following equations is x = -4 a solution?
someone plz help me asap I will make you brainlist
PLEASE HELP
How would Newton’s second law of motion impact the fitness routine of someone who is significantly overweight? Is there any type of fitness activity that a significantly overweight person could do where Newton’s second law of motion would not be a factor?
Answer: The rate of change of momentum of a body over time is directly proportional to the force applied and occurs in the same direction as the applied force.
We can write the law as:
Where F is a force, and P is the momentum.
Remember that the momentum is defined as the quantity of motion, such that:
P = M*V
Where M is the mass of the moving object and V is the velocity of the moving object.
Or we can write the second law as:
F = M*a
M = mass
a = acceleration
Happy To Help ;)
Step-by-step explanation:
I NEED A 100% ACCURATE ANSWER FOR THIS ASAP NO LINKS !!!
Solve for x: 7x = 4x + 27
x =
Answer:
x = 9
Step-by-step explanation:
Step 1: Subtract 4x from both sides.
[tex]7x - 4x = 4x + 27 - 4x[/tex] [tex]3x = 27[/tex]Step 2: Divide both sides by 3.
[tex]\frac{3x}{3} =\frac{27}{3}[/tex] [tex]x = 9[/tex]Step 3: Check if solution is correct.
[tex]7(9) = 4(9) + 27[/tex] [tex]63 = 36 + 27[/tex] [tex]63 = 63[/tex]Therefore, x = 9.
what is the equivalent fraction of 6/20 with a denominator of 10
Answer:
3/10
Step-by-step explanation:
An item costs 490before tax, and the sales tax is39.20 .
Find the sales tax rate. Write your answer as a percentage.
Answer:
8% is the sales tax rate
Step-by-step explanation:
I'm not the best with math but the way I found the answer was by first using my local sales tax rate and determining how much the tax would be.
490 * 8.75% = 42.875
Knowing that this amount was higher than in the equation, I lowered the sales tax to 8% (0.08)
490 * 8% = 39.2
Hope this was somewhat helpful
Choose the system of inequality's that matches the graph
An observable characteristic of abnormal body
functioning that medical professionals can
visualize or detect is called what?
a symptom
a sign
a measure
inflammation
Answer:
a sign
Step-by-step explanation:
marking people brainliest for random LOL comment if you wanna be marked brainliest
LOL, i really need points.
Alita wants only one green pepper. the price is three for $1.48 how much will one pepper cost?
Answer:
$0.493
Step-by-step explanation:
1.48 divided by 3
rational function f(x)=5-x/x^2+5x+6 f(x)=3
Answer:
jgfjfhjhjbnbvmnfnmf
Step-by-step explanation:
If the rate of the boat in still water is 20 mph, and the rate of the current is x mph, what is the rate of the boat going upstream
9514 1404 393
Answer:
20 -x
Step-by-step explanation:
Relative to the shore, the speed of the current subtracts from the speed of the boat. The net upstream speed is ...
20 -x . . . . miles per hour
I need the answer for this
Answer:
it is either f or h
The volume of the cube shown below is 1000 cm". What is the length side, x of the cube in centimeters?
resnanse)
Answer: x = 10
Step-by-step explanation:
The formula to find the volume of a cube is as following:
V = x³
Since we already know the volume, let's substitute it in the formula.
1000 = x³
To find x, we should do the cube root on each side.
∛1000 = ∛x³
x = 10
Solve the inequality x/5-3<0
Answer:
x < 15
Step-by-step explanation:
[tex]\frac{x}{5}[/tex] - 3 < 0 ( add 3 to both sides )
[tex]\frac{x}{5}[/tex] < 3 ( multiply both sides by 5 to clear the fraction )
x < 15
please help need this done by tomorrow thank you [PHOTO]
Answer:
Step-by-step explanation:
The two angles must add to 180
(4x-2)+(3x+14)=180
7x+12=180
7x=168
x=24
Jon has 32 trading cards. He
puts the cards into piles of 8 cards. How many piles
does he make?
Answer:
4
Step-by-step explanation:
Take the number of cards and divide by the number of cards to determine the number of piles
32/8
4
There are 4 piles
Answer:
4 piles
Step-by-step explanation:
32 ÷ 8 = 4
8 cards in a pile. 8, 16, 24 ,32.
Answer fast, please!!!
According to distributive property
[tex]{{ \large{ \blue{ \rm{{➥}}}}}} \rm \large \: \: 6.7 \: (8x \: + \: 9)[/tex]
[tex]{{ \large{ \blue{ \rm{{➥}}}}}} \rm \large \: \: 53.6x \: + \: 60.3[/tex]
Hence , Option D is the correct answer.
Who ever answers first will be marked brainliest
Answer:
Isolate the variable by dividing each side by factors that don't contain the variable.
Inequality Form:
x≥9
Interval Notation:
[9,∞)
Step-by-step explanation:
1/3 x 2/5 in simplest form
Answer:
2/15
Step-by-step explanation:
1/3 x 2/5
= ( 1 x 2 ) / ( 3 x 5 )
= 2/15
Answer:
2/15
Step-by-step explanation:
1/3*2/5
(1*2)/(3*5)
2/15
Which is the following is a possible solution for the inequality? x+7<10
Answer:
[tex]x + 7 < 10 \\ x < 10 - 7 \\ x < 3[/tex]
Help with question thanks
Step-by-step explanation:
horizontal asymptote y=0
the graph is in the image above
range[-1, infinity)
domain(-infinity, infinity)
Second angle of a triangle is 10 degree larger than first angle. Third angle is 10
larger than second angle. Find the smallest angle of the triangle.
Find the unknown number in the equation 4 x 12 = 6 x n.
Answer:
n = 8
Step-by-step explanation:
hope this helps
What is the value of k?
2k+9=7−3k
k=−2
k=−0.4
k = 2
k = 3.2
PLEASE HELP !!!!!
Hi there!
»»————- ★ ————-««
I believe your answer is:
[tex]k = -0.4[/tex]
»»————- ★ ————-««
Here’s why:
⸻⸻⸻⸻
[tex]2k+9=7-3k\\\rule{150}{0.5}\\\rightarrow 2k + 9 = 7-3k\\\\\rightarrow 2k + 3k + 9 = 7 - 3k + 3k\\\\\rightarrow 5k + 9 = 7\\\\\rightarrow5k + 9 - 9 = 7 - 9\\\\\rightarrow 5k = -2\\\\\rightarrow \frac{5k=-2}{5}\\\\\rightarrow \boxed{k = -\frac{2}{5} = -0.4}[/tex]
⸻⸻⸻⸻
»»————- ★ ————-««
Hope this helps you. I apologize if it’s incorrect.