Answer: See explanation
Step-by-step explanation:
Cluster sampling, is a form of sampling whereby the population is divided by the researchers into smaller groups that are referred to as clusters and then the sample will be taken from the clusters formed.
Convenience sampling is when a sample is drawn based on the available population.
Systematic sampling is when a sample is gotten when the members are taken at regular intervals e.g 5th person, 12th items etc.
Simple random sampling is when the sample is selected from the larger population and in this case, every member involved can be selected as they all have an equal chance.
Based in the definition above, the answers will be:
a. Cluster sample
b. Convenience sample
c. Systematic sample
d. Simple random sample
63 over 22 as a decimal
Answer:
Step-by-step explanation:
63/22 = 2.86363 = 2.86
Problem 3.39) Suppose that 10% of the adult population has blood chemistry parameters consistent with a diagnosis of a pre-diabetic condition. Of four volunteer participants in a health screening study, what is the probability that one of them is pre-diabetic
Answer:
0.2916 = 29.16% probability that one of them is pre-diabetic
Step-by-step explanation:
For each adult, there are only two possible outcomes. Either they have blood chemistry parameters consistent with a diagnosis of a pre-diabetic condition, or they do not. Each volunteer in independent of other volunteers. So we use the binomial probability distribution to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
And p is the probability of X happening.
10% of the adult population has blood chemistry parameters consistent with a diagnosis of a pre-diabetic condition.
This means that [tex]p = 0.1[/tex]
Of four volunteer participants in a health screening study, what is the probability that one of them is pre-diabetic
This is P(X = 1) when n = 4. So
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 1) = C_{4,1}.(0.1)^{1}.(0.9)^{3} = 0.2916[/tex]
0.2916 = 29.16% probability that one of them is pre-diabetic
x - 4y = 1 and 3x + 2y = -11. What is the solution to the system of equations?
Answer:
x=-3 y=-1
Step-by-step explanation:
The solution is
The value of x = -3
The value of y = -1
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the first equation be = A
Now , the value of A is
x - 4y = 1 be equation (1)
Let the first equation be = B
Now , the value of B is
3x + 2y = -11 be equation (2)
Now , on simplifying both equations , we get
Multiply equation (1) by 3 , we get
3x - 12y = 3 be equation (3)
Subtracting equation (2) from equation (3) , we get
-12y - 2y = 3 - ( -11 )
-14y = 14
Divide by -14 on both sides of the equation , we get
y = -1
So , the value of y = -1
Substitute the value of y in equation (1) , we get
x - 4y = 1
x - 4 ( -1 ) = 1
x + 4 = 1
Subtracting 4 on both sides of the equation , we get
x = -3
So , the value of x = -3
Hence , the value of x is -3 and value of y is -1
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5th grade math. Correct answer will be marked brainliest.
Do you expect the difference between the 25th percentile and the median (50th percentile) to be Group of answer choices Larger than the difference between median and 75th percentile. We need to see the actual data to answer this question Smaller than the difference between median and 75th percentile. Equal to the difference between median and 75th percentile.
Answer:
Equal to the difference between median and 75th percentile.
Step-by-step explanation:
xth percentile:
If a measure is said to be in the xth percentile, it means that x% of the measures are smaller than it, and (100-x)% are larger.
Distance between percentiles:
If the difference between two percentiles is the same, the difference between the measures should also be the same.
Median:
The 50th percentile is called median.
In this question:
75th percentile - 50th percentile = 25
50th percentile - 25th percentile = 25
The differences should be equal.
Evaluate the following expression if x=4 28x - 9 (2x+ 6)
Answer:
-14
Step-by-step explanation:
substitute 4 for x
28(4) - 9 (2(4)+ 6)
multiply
112-9(8+6)
add numbers
112-9(14)
multiply
112-126
subtract
-14
Reduce the ratio to its lowest form 12:30
Answer:
2/5
Step-by-step explanation:
Reduced fraction: 25. So, 12/30 simplified to lowest terms is 2/5.
Hope this helps!
2. Select all of the numbers that Courtney could multiply by 72,033 to get a product LESS than 72,033 (2 Points)
A. 1 and 3/4
B.718
C.2
D. 1/6
E. 12/8
Answer:
Step-by-step explanation:
It's not A since that means 1 3/4 or 7/4. That isn't a possible answer since 7/4 is greater than 1.
B: not the answer. You'll make 72000 almost 1000 times bigger if you use B.
C: same reason as B. Anything over 1 will make 72033 larger, not smaller
E: 12/8 > 1. It can't work.
The answer is d . Try it on your calculator. Anything between 0 and 1 make make any number smaller. (include zero, don't include 1).
Here are the ingredients needed to make 8 pancakes.
250 ml milk
1 egg
140g flour
5G butter
Simon makes 4 pancakes. Work out how much milk he needs.
Craig makes 12 pancakes. Work out how much butter he needs.
Answer:
250ml milk ÷ 2 = 125 ml of milk
(5÷8) x 12 = 7.5G butter
hope this helped :)
Explain your answer
Thank you so much !
Will give brainlst
Answer:
D
Step-by-step explanation:
The amount of oil and natural gas a given region produces is not always proportionate to the size of its proven reserves. For example, the Middle East contains approximately 50 percent of the world’s proven reserves but accounts for only about 30 percent of global oil production (though this figure is still higher than in any other region). The United States, by contrast, lays claim to less than 2 percent of the world’s proven reserves but produces roughly 16 percent of the world’s oil.
John had to different syrups. Syrup A is 2 parts sugar and 8 parts water, and Syrup B is 3 parts syrup and 5 parts water. How much of each should John mix together to get 280 quarts of syrup that is 3 parts sugar and 7 parts water?
It all started when my mom met my dad...
You'll know the rest
Determine whether the ratios 1:2 and 3:4 are equivalent
Answer:
They are not equivalent
Step-by-step explanation:
1:2 is the same as 2:4
2:4 does not equal 3:4
Which of the following is a quadratic equation whose roots are 3 and -1?
Answer:
JK up FMyRick they rock TBD Trinity scrump TV TM in
Elimination method 10x-4y=-8
-5x+6y=10
In how many different ways can you divide the shape to get the same number and type of shapes you obtained in part A?
Answer:
There are two ways of decomposing these shapes, Into two rectangles and one triangle!
Step-by-step explanation:
Just did this on EDMENTUM you got thiss!
Dont forget to eat a brownie! <3
Answer:
There are two ways of splitting the shape into two rectangles and one triangle.
Step-by-step explanation:
HELP FAST PLSSSS IM DESPERATE RLLY
help please asap i will give you a heart if you do
Answer:
30
Step-by-step explanation:
2(6)=12
3(6)=18
12+18=30
Step-by-step explanation:
its 30 2(6)=12 3(6)=18
30
Is The order that you perform the similarity transformations important?
Answer:
yes i think it is
Step-by-step explanation:
Find: 1. three quartiles and 2. interquartile range (IQR).
1, 3, 9, 12, 12, 14, 18
The position of Q1 is the 2th number. Q1 is 3.
The position of Q2 is the 4th number. Q1 is 12.
The position of Q3 is the 6th number. Q1 is 14.
IQR is 11.
What are the required values?The first quartile, second quartile and the interquartile range are used to measure the variation of data. Median is a measure of central tendency. Median is the number at the center of the dataset.
Q1 = 1/4 x (n + 1)
1/4 x 8 = 2nd number = 3
Q2 = 1/2 x (n + 1)
1/2 x 8 = 4th number = 12
Q3 = 3/4 x (n + 1)
3/4 x 8 = 6th number = 14
IQR = Q3 - Q1
14 - 3 = 11
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Marta drew a rectangular poster.
·The length of the rectangle was
2/3 of a yard.
·The width of the rectangle was
3/4 of a yard.
What was the area of Marta’s rectangle?
A. 1/2 yard
B. 5/12 yard
C. 5/7 yard
D. 1 5/12 yards
Answer:
1/2 yard
Step-by-step explanation:
Multiply the top numbers (the numerators). Which would give you 6.
Multiply the bottom numbers (the denominators). Which would leave you with 12.
Simplify the fraction if needed. 6/12 can be simplified down to 1/2
The question states:pat needs at least 13 days to make a large order of cupcakes which inequality shows how many ,d, pat needs to make all the ordered cupcakes
Please help first to answer I'll mark brainliest
Answer:
D
Step-by-step explanation:
Inverse of
f(x) = 4x+16
5. Find the slope of this line.
Answer:
3/2
Step-by-step explanation:
rise/run
Directions: select the correct answer from the drop-down menu.
Answer:
B
Step-by-step explanation:
B.) infinite solutions.
The reason I say this is because there is an arrow pointing down past the number line meaning that the number line never ends.
Hope this helps.
。 . . 。 ඞ ඞ ඞ ඞ ඞ ඞ ඞ 。 . • . [Northstar] was ejected. . . 。 . 。 ﾟ . . , . . .. 。 • ﾟ 。 . . . 。。 • ﾟ 。 . . . 。。 • ﾟ 。 . . . 。。 • ﾟ 。 . . . 。
The volume inside a rectangular storage room is 2061 feet The room is 9 feet high find the area of the floor
Answer:
229 ft²
Step-by-step explanation:
Note that the volume is 2061 ft³, not 2061 ft.
area of floor = volume÷height = (2061 ft³)/(9 ft) = 229 ft²
What type of angles are these?
Complementary, Supplementary, or Neither
Got It? Do these problems to find out.
-15
85° | 90°
75
Answer:
a: Neither; b: Complementary
Step-by-step explanation:
Complementary= 90 degrees
Supplementary= 180 degrees
For letter a. the answer is neither because 85 +90= 175 degrees, not 90 or 180 degrees.
For letter b. the answer is complementary because 75 +15= 90 degrees.
Sarah leans a 20 ft ladder against
the side of her house so that the
base of the ladder is 14 ft from the
house ABOUT how far up the side
of the house does the ladder reach?
Answer:
(a) 14
this is what i got
Cary puts $500 into a savings account that earns 5.5% annually. The amount in her account can be modeled by C(t) = 500(1.055)t, where t is the time in years.
Write the expression best approximates the amount of money in her account using a weekly growth rate. (DO NOT ROUND ANY NUMBERS)
***Just need some clarification, it says there is annual growth rate but the question is asking that I change the function into weekly growth rate so...how do I do that?
Answer:
Answer: a) A(t)= $500(1.055)^t
b) Amount after 9 years A(9) = $809.55
Amount after 17 years A(17) = $1242.40
sorry if im wrong
Step-by-step explanation:
The sum of 8 times b and twice g is equal to 32
What is the value of q?
a. 4√5
b. 2√14
c. 20√5
d. 64√5
9514 1404 393
Answer:
(b) 2√14
Step-by-step explanation:
The geometric mean theorems applicable to this geometry are ...
q = √(4·(4+10))
q = 2√14
__
Other unknowns
r = √(10·(10+4)) = 2√35
s = √(10·4) = 2√10