Lower quartile. The correct option is A
What is Lower quartile ?The lower quartile, often known as the first quartile or Q1, is a measure of central tendency that separates the bottom 25% of a data set from the rest of the data.
In this instance, five out of the 20 students received scores of 70 or lower, which equals a 25% proficiency rate.
Therefore, 70 or below is the lower quartile.
Learn more about Lower quartile here : brainly.com/question/28169373
#SPJ1
A survey is taken to figure out the average temperature across all cities in the United States on a particular day. In 10 randomly chosen states, 40 cities are chosen to record the temperature. Which sampling method describes this situation?
a. convenience
b. cluster
c. random
d. stratified
Answer: Random
Step-by-step explanation:
Answer:
systematic sampling
Step-by-step explanation:
Aka, C random selection
the original is a square with sides of 1.25 inches. after scaling the logo must have a perimeter of 32 feet. the action is called _____ and the scale factor is ____
Answer:
enlargment and 6.4 feet per inch, enlargement and the scale factor is 6.4 feet per inch
Step-by-step explanation:
Check this link out for your answer: https://brainly.com/question/16564586
un numero entero y racional
Answer:
Los números racionales son aquellos números que pueden ser expresados como una relación entre dos enteros. Por ejemplo, las fracciones 1/3 y –1111/8 ambas son números racionales. Todos los enteros están incluídos en los números racionales, ya que cualquier entero z puede ser escrito como la relación z /1.
Step-by-step explanation:
A manager uses the following equation to predict monthly receipts: Y-450-10 Lt time in weeks and y = receipts.) What is the forecast for July 14th ift=4 is the fourth week in January and t = 6 is February 14th of the same year (assume there are 4 weeks in each month)?
a. 690
b. 710
c. 730
d. 750
A major reason that decision making is often not such a rational process is that there are: Suppose we have H0:µ1= µ2 versus HA: µ1 ≠ µ2, with level of significance of α =.05 and critical values of zα/2 = ± 1.96, and the computed Test Statistics value of Z = -1.07. What is our decision?
Answer:
b. 710
Fail to reject H0
Step-by-step explanation:
Forecast for July 14 :
Assume there are 4 wwwks in each month :
January to June = ( 4 * 6 months) = 24 weeks in 6 months ;
July - July 14 = 2 weeks :
2 + 24 = 26 weeks
The model given :
Y = 450 + 10t
Y = 450 + 10(26)
Y = 450 + 260
Y = 710
2.)
Test is a 2 tail test :
Zstatistic = - 1.07
At 95% confidence = ±1.96
Zcritical = - 1.96
Hence,
Reject H0 if ;
Zstatistic < Zcritical
-1.07 > 1.96
Hence, fail to reject H0.
I’m confused if someone can explain 15points
Fred earns $ 45 mowing the lawn. He spends $ 5 on music, and puts half of what's left in a savings account. He then gets another $ 10 for washing his neighbor's car. First, write the expression that represents the number of dollars Fred keeps (and does not put in his savings account), and then simplify.
Answer:
$30
Step-by-step explanation:
Given that :
Amount earned for mowing = $45
Amount spent on music = $5
Amount earned for washing neighbor's car = $10
Amount saved = half or remaining amount
Amount of dollars Fred keeps =
Amount Fred keeps:
[(Amount earned - amount spent) / 2] + $10
[($45 - $5) / 2] +
($40 / 2) + $10
= $20 + $10
= $30
What is
3 1/2 + 3/4 =
A triangle with side lengths of 15, 18, and 25 is a right triangle. True or False
Can someone help me, please??
Answer:
im gonna say its the last one
Step-by-step explanation:
all of the graphs and histograms ive seen have a 0 at the y
HELPPPP DUEEE IN A FEW MINSSS PLS HELPPP
Is this theorem AA, SSS, or SAS? If so how do you know?
Point A is located at (-3, 4) and is translated 3 units down. What are the coordinates of point A'?
(-6, 4)
(-3, 7)
(0, 4)
(-3, 1)
Answer:
(-3,1)
Step-by-step explanation:
(-3,4-3) = (-3,1)
karl can flip 3 water bottles in 1/8 of a minute at that rate how many bottles can we expect him to flip in 1 minute
Answer:
Step-by-step explanation:
x/1=3/(1/8)
x=3(8/1)=24 bottles per minute
Compare and contrast the words malfunction and dysfunction
you have 26 books.you return some books.then you take out 15 more books.now you have 27 books.how many books did you return? solve anyway
Answer:
14 books were returned.
Step-by-step explanation:
You would have to first
27-15=12
26-12=14
(I hope that this helps)
Help me please!...ffddfdf
Answer:
Radius:3.5 or 7/2
Diameter:7
Step-by-step explanation:
The diameter is given, and the radius is half of the diameter because it's from the middle of the circle to the edge. Divide 7 by two and you get radius
Help please i am stuck
Answer:
it is because so you can evenly add it
Step-by-step explanation:
because it is easyer to add 5/10 + 2/10
than 5/10 + 1/5 isnt it?
3. What is a reasonable r-value for the scatterplot below?
O r=1
or=0.333
O r=0.972
or= -0.976
Answer: r= 0.972
Step-by-step explanation:
the sum of 1/7 + 2/5
Answer:
19/35
Step-by-step explanation:
HELP ASAP PLEASE!
An airplane cuts through the morning sky. For every 1,000 feet that it climbs, the outside temperature drops 20 degrees Fahrenheit. What is the rate of temperature change in degrees Fahrenheit per foot? Complete the steps below to answer the question.
part A: Write the change in elevation and the change in temperature as rational numbers.
part B: Write a numerical expression to represent the rate of temperature change in degrees Fahrenheit per foot.
part C: What is the rate of temperature change in degrees Fahrenheit per foot?
part D: Now, consider the reverse situation: as the airplane descends, or drops, 1,000 feet in the air, the temperature rises 20 degrees Fahrenheit. Write a numerical expression representing the rate of temperature change in degrees Fahrenheit per foot.
part E: What is the rate of temperature change in degrees Fahrenheit per foot?
part F: How is the rate you found in part E related to the rate you found in part C? What does this mean?
Please answer each question separately! :(
Step-by-step explanation:
The air plane is rising so the change in elevation is +1000 feet. The temp dropped and is -20 degrees fahrenheit.
1 degree per 50 ft
For every 1,000 feet that it climbs, the outside temperature drops 20 ... What is the rate of temperature change in degrees Fahrenheit per foot.
Hope I helped
Answer:
Step-by-step explanation:
part A=The airplane is rising, so the change in elevation is +1,000 feet. The temperature is dropping, so the change in temperature is -20 degrees Fahrenheit.
Part B= -20 degrees fehrenheit/1,000 feet
Part C= -20 degrees fehrenheit/1,000 feet= -1 degrees fehrenheit/50 feet
The answer can also be written as -1 degrees fehrenheit/50 per foot.
Part D = The airplane is descending, so the change in elevation is -1,000 feet. The temperature is rising, so the change in temperature is +20 degrees Fahrenheit.
The rate of temperature change in degrees Fahrenheit per foot is 20/-1000
Part E= The answer can also be written as-1/-50
Part F= The rate in part E is equal to the rate in part C. It means that -1/50=1/-50=-1/-50
please please mark as brainliest.!!!
Which of the following fractions is written in its simplest form?
a. 11/121
b. 45/50
c. 14/35
d. 12/73
NEED HELP ASAP!!! for geometry class
Answer:
B) AAS
Step-by-step explanation:
B) AAS
Which is the graph of the function f(x) = 1/2x^2 + 2x – 6?
Across
A 35 degree angle and a 55
degree angle add together
what
angles?
Answer:
20
Step-by-step explanation:
ahaja8ququqqu8qyq8
SOMEONE HELPPPPPPPP
WITH WHAT THE SCREEN MAD BLURRY
For the following sample of n 5 10 scores:
a. Assume that the scores are measurements of a discrete variable and find the median.
b. Assume that the scores are measurements of a continuous variable and find the median by locating the precise midpoint of the distribution.
Scores: 2, 3, 4, 4, 5, 5, 5, 6, 6, 7
Answer:
Step-by-step explanation:
Given that:
scores = 2, 3, 4, 4, 5, 5, 5, 6, 6, 7
Since the scores are already in ascending order; then the median which is the middle number will be:
median = (5th term + 6 term)/2
median = (5+5)/2
median = 10/2
meian = 5
b)
Use the cumulative percentage table
X frequency cumulative frequency cumulative percentage
2 1 1 10%
3 1 2 20%
4 2 4 40%
5 3 7 70%
6 2 9 90%
7 1 10 100%
fraction = the no. required to reach 50%/ no. in that interval
= 1/3
Since we have a total of 4 boxes when we reach the value of 4.5
The median of the continuous variable = 4.5 + (1/3)
The median of the continuous variable = 4.833
The median of the continuous variable ≅ 5
Answer:
Step-by-step explanation:
Given that:
scores = 2, 3, 4, 4, 5, 5, 5, 6, 6, 7
Since the scores are already in ascending order; then the median which is the middle number will be:
median = (5th term + 6 term)/2
median = (5+5)/2
median = 10/2
median = 5
mel and chris share some money in the ratio of 2:5. chris gets £45 more than mel. how much did mel get?
Answer:
mel gets £18
Step-by-step explanation:
5*9=45
and what ever you do to one side you do to the other so then you do
2*9=18
so therefore mel gets £18
To make fruit salad, Maria bought 2 1/4 pounds of apples, and 1 1/3 pounds of peaches. How much fruit salad did this make? Make sure your answer is in simplest form.
Answer:
3 7/12
Step-by-step explanation:
What is an equation of the line that passes through the points (4, 3) and (-6, 3)?
Answer:
Step-by-step explanation:
(4,3)(-6,3)
3-3/-6-4
m=0
y=3
Answer:
y=3
Step-by-step explanation:
Something that I notice about this is that the 2 y coordinates are the same
This means that the line isn't increasing nor decreasing, it's constant
if we look at the y=mx+b
we have, so far,
y=0x+b
we just need be
we know that when x=4 y=3 so we have
3=(0)(4)+b
b=3
so the answer is just y=3
Plz help me!
-12 - 58 - (-34) =
-36 would be the answer
hope that helped :)
Answer:
-36
Step-by-step explanation:
-12-58-(-34) or -12-58+34
-70+34 or 34-70
subtract 70 from 34
-36
Hope this helps. Have a nice day you amazing bean child.