Answer:
11:46
Step-by-step explanation:
Divided by 2.
Helpppppppppppppppppp
Answer:
B is the right answer I believe
The value of one score in a distribution is changed from X = 20 to X = 30. Which measure(s) of central tendency is (are) certain to change?
Answer:
Mean
Step-by-step explanation:
The three basic measures of central tendencies are mean, median and mode.
Mean can be described as the average value of a set of numbers or scores in a distribution.
One of the ways the mean can be calculated is by dividing the sum of the scores in a distribution by the number of scores in the distribution. This can be represented mathematically as follows:
Mean = Sum of the scores in a distribution / Number of scores in the distribution ........ (1)
Median is the middle number when the scores in a distribution is arranged in ascending or descending order.
Mode is the most frequent number or score in a distribution.
Out of the three basic measures of central tendencies only the mean will certainly change when there is a change in one of the scores. This is because, we can still have the same score as the most frequent and the same number as the median but the mean will change.
For example, we can prove that the mean will certainly change if we assume that the sum of the scores in a distribution is 200 and number of scores in the distribution is 10, wee can substitute this into equation (1) and have:
Mean = 200 / 10 = 20
Now, as given in the question, if the value of one score in the distribution is changed from X = 20 to X = 30. We can obtain the difference as follows:
Difference in score = 30 - 20 = 10
The new mean can be calculated as follows:
New mean = (200 + Diffrence in score) / 20 = (200 + 10) / 20 = 210 / 20 = 21
Therefore, the mean changed by 1 from 20 to 21. This therefore proves that the mean will certainly change.
Of the measures of central tendency, the measure which will certainly change is the mean.
Measures of central tendency include mean, median and mode of a distribution.
The mean refers to the average, hence, the a change in one value in the distribution would certainly change the mean of the distribution.
The mode refers to the highest occurring value in the distribution.
Median denotes the number at the middle of a distribution once it is arranged in order of magnitude.
For instance :
2, 2, 10, 15, 20The mean = (2 + 2 + 10 + 15 + 20) / 5 = 49/5 = 9.8
Mode = 2 (highest occuring)
Median = 10 (middle value)
If X = 20 is changed to X = 30
2, 2, 10, 15, 30The mean = (2 + 2 + 10 + 15 + 30) = 59/5 = 11.8
Mode = 2 (highest occuring)
Median = 10 (middle value)
Therefore, the measure which would certainly change is the mean.
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D 2. Choose the correct answer.
Art's wife wants to cover the floor with 1 foot square carpet tiles. The tiles are sold in boxes of 20 for $38.90. Before Art's wife can buy the correct amount of
boxes, what other information does she need to know?
O the color of the tiles
O the dimensions of the floor
O the amount of tax
all of these
which ordered pair is a solution of the equation y=4x?
a-(1,3)
b-(-1,-4)
c-(-4,-1)
d-(1,-4)
The time needed to complete a job is normally distributed with a mean of 1 hour and standard deviation of 10 minutes. Probability to complete the job in hone hour or more, but less than 70 minutes is:
Answer:
The value is [tex]P(60 < X < 70) = 0.34134[/tex]
Step-by-step explanation:
From the question we are told that
The mean is [tex]\mu = 1 \ hour = 60 \ minutes[/tex]
The standard deviation is [tex]\sigma = 10 \ minutes[/tex]
Generally the 1 hour is equivalent to 60 minutes
Generally the probability to complete the job in one hour or more, but less than 70 minutes is mathematically represented as
[tex]P(60 < X < 70) = P(\frac{60 - 60 }{10 } < \frac{X - \mu}{\sigma } < \frac{70 - 60 }{10 } )[/tex]
=> [tex]P(60 < X < 70) = P(0 < \frac{X - \mu}{\sigma } < 1 )[/tex]
[tex]\frac{X -\mu}{\sigma } = Z (The \ standardized \ value\ of \ X )[/tex]
=> [tex]P(60 < X < 70) = P(0 <Z < 1 )[/tex]
=> [tex]P(60 < X < 70) = P(Z < 1) - P(Z < 0 )[/tex]
From the z table (Z < 1) and (Z < 0 ) is
[tex]P(Z < 1) = 0.84134[/tex]
and
[tex]P(Z < 0 ) = 0.5[/tex]
=> [tex]P(60 < X < 70) = 0.84134 - 0.5[/tex]
=> [tex]P(60 < X < 70) = 0.34134[/tex]
A company deposited a $420 check in its bank account. However, the amount was recorded as $240 in the company’s books (checkbook). Which journal entry adjustment should the accountant make?
A.
The cash account will be debited by $420.
B.
The cash account will be credited by $240.
C.
The cash account will be debited by $180.
D.
The cash account will be credited by $420.
Answer:
I think the answer is C.
Step-by-step explanation:
You subtract the difference with the real amount with the mistake and get $180.
Use this information and the information you have learned in the last three lessons to decide which savings option is best for Vincent. Use the PACED decision-making method and show your work. Which savings option is best for Vincent?
Answer:
(the biggest %off would be the answer, but ther is no list of decisions or different coupons)
Step-by-step explanation:
again, 100% off would be the best deal, but no answer choices.
(i might be wrong;im farming for brainly points.)
meredith deposited $200 into an account
Select the better deal in the pair. Then give the unit rate for the better deal. $21 5 gal or $61.05 15 gal
Answer:
The second one is a better deal
Step-by-step explanation:
Answer:
$61.05 for 15 gal is better deal
Step-by-step explanation:
$61.05 divided by 15=$4.07 per gallon
$21 divided by 5= $4.2 per gallon
what is the equation of a line that is parallel to 2x+3y=3 and passes through the point (3, -4).
Answer:I think it is 2x - 3y=27
Step-by-step explanation:I had it on a quiz.
Which of the following expressions would represent a class of 24 students divided equally into 6 groups?
Answer:
24/6=x
where x is the number of students in every group
Step-by-step explanation:
there's 24 kids in total
you want to divide them into 6 groups
24/6
The degree of the polynomial function f(x) is 3.
The roots of the equation f(x)=0 are −4, 0, and 2.
Which graph could be the graph of f(x)?
Answer:
there is no image
Step-by-step explanation:
Adrian's gerbil weighed 68.59 grams at the beginning of the summer. During the summer, the gerbil gained 24.6 grams.
Estimate the weight of the gerbil at the end of the summer by rounding each value to the nearest whole number.
Answer:
94 grams
Step-by-step explanation:
Adrian gerbil weighed 68.59 grand at the beginning of the summer
During the summer the gerbil gained 24.6 grams
Therefore the weight of the gerbil at the end of the summer can be calculated as follows
= 69 + 25
= 94 grams
Therefore the weight of the gerbil at the end of the summer is 94 grams
What times what equals -20 and those same numbers added together equals 8
Answer:
10 and -2
Step-by-step explanation:
Step-by-step explanation:
HELP PLEASE I really need the answer
Answer:
1. 1.85
2. 18.5
3. 185
4. 1850
5. Kristen needs '1850' years of yarn
Step-by-step explanation:
Please help I would appreciate it
If Mitzi has two dogs, a puppy that weighs 25 pounds and an adult that weighs 80 pounds, how much will it cost to bathe them both?
Answer:
105
Step-by-step explanation:
What is the probability that from a sample of 100 Indianapolis residents, fewer than 95% were rooting for the Giants in Super Bowl XLVI
Complete Question
Super Bowl XLVI was played between the New York Giants and the New England Patriots in Indianapolis. Due to a decade-long rivalry between the Patriots and the city’s own team, the Colts, most Indianapolis residents were rooting heartily for the Giants. Suppose that 90% of Indianapolis residents wanted the Giants to beat the Patriots. What is the probability that from a sample of 100 Indianapolis residents, fewer than 95% were rooting for the Giants in Super Bowl XLVI?
Answer:
The value is [tex]P(X < 0.95) = 0.95224[/tex]
Step-by-step explanation:
From the question we are told that
The proportion that wants Giants to win p = 0.90
The sample size is n = 100
Generally the mean of this sampling distribution is
[tex]\mu_{x} = 0.90[/tex]
Generally the standard deviation is
[tex]\sigma = \sqrt{\frac{p(1- p)}{n} }[/tex]
=> [tex]\sigma = \sqrt{\frac{ 0.90 (1- 0.90)}{100} }[/tex]
=> [tex]\sigma = 0.03[/tex]
Generally the probability that from a sample of 100 Indianapolis residents, fewer than 95% were rooting for the Giants in Super Bowl XLVI is mathematically represented as
[tex]P(X < 0.95) = P(\frac{ X - \mu_{x}}{\sigma} < \frac{0.95 -0.90}{0.03} )[/tex]
[tex] \frac{X -\mu}{\sigma } = Z (The \ standardized \ value\ of \ X )[/tex]
[tex]P(X < 0.95) = P(Z < 1.667 )[/tex]
=> [tex]P(X < 0.95) = 0.95224[/tex]
A video game arcade offers a yearly
When does a quadratic equation have no solutions
Answer:
A quadratic equation has solutions when the graph crosses the x-axis. There are two ways the graph can have no solution, when the "a" value is greater than 0 and is translated vertically above the x-axis, or if the opposite occurs, when the "a" value is negative and is translated vertically below the x-axis.
For the number line shown, which statement is not true?
A number line shows a to the left of 0 and b to the right of 0. Point a is closer to 0 than point b.
|a| > b
–|b| a
|a| < |b|
Answer:
1a8?
Step-by-step explanation:
thi is how
The incorrect statement for the given condition is;
⇒ |a| > b
What is Number line?
Number line is a horizontal line where numbers are marked at equal intervals one after another form smaller to greater.
Given that;
A number line shows 'a' to the left of 0 and 'b' to the right of 0. Point a is closer to 0 than point b.
Now,
Since, Point a is closer to 0 than point b.
And, Number 'a' to the left of 0 and 'b' to the right of 0.
Hence,
Let the number 'a' = - 1
Then, The number 'b' = 2
So, We get;
|a| = |-1| = 1
And, |b| = 2
Clearly, |a| < b
Thus, The incorrect statement for the given condition is;
⇒ |a| > b
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To solve the exponential inequality below by graphing, Sasha creates a table of values representing the left side of the inequality.
32x-3 < 3
A 2-column table with 4 rows. Column 1 is labeled x with entries 0, 1, 2, 3. Column 2 is labeled y with entries StartFraction 1 Over 27 EndFraction, one-third, 3, 27.
What is the solution set for the inequality?
(2, ∞)
(3, ∞)
(−∞, 2)---- this one is the correct one
(−∞, 2) ∪ (3, ∞)
Answer: (-∞,2)
Step-by-step explanation:
correct on edg2020
Answer:
Letter c is the correct answer
Step-by-step explanation:
Pleaseeeee help ASAP will give BRAINLEIST!!
Lynn wants to multiply 44 × 305. She says that all she has to do is find 4 × 305 and then double that number.
Which explains whether or not Lynn’s method will give her the correct answer?
Lynn's method will give her the correct answer.
Multiplying by 4 and then doubling the product is the same as multiplying by 44.
Lynn's method will not give her the correct answer.
Multiplying by 4 and then doubling the product is the same as multiplying by 6, not by 44.
Lynn's method will not give her the correct answer.
Multiplying by 4 and then doubling the product is the same as multiplying by 8, not by 44.
Lynn's method will not give her the correct answer.
Multiplying by 4 and then doubling the product is the same as multiplying by 16, not by 4
Answer:
Lynn's method will not give her the correct answer.
Multiplying by 4 and then doubling the product is the same as multiplying by 8, not by 44.
Step-by-step explanation:
I just solved the equation of every answer and this is the one that
(305 x 4) x 2= (305 x 8) x 2.
Message me if you don't understand
mang 2) Write the equation of a line that is parallel to –3x + 2y = 6 and goes through the point (-1,-4).
Step-by-step explanation:
[tex]y - y1 = m(x - x1)[/tex]
[tex]y - ( - 4) = \frac{3}{2} (x - ( - 1)[/tex]
[tex]y = \frac{3(x + 1) - 8}{2} [/tex]
[tex]y = \frac{3}{2} x - \frac{5}{2} [/tex]
√3x-1=7 solve for x. What is the root? If there is no root, choose none.
A chef can finish a catering job in 9hrs. His student can do the same job in 18hr. How long will it take them to do the job if they work together?
Answer:
if they do together it will take 9 hour, same like which the chef can finish.
Zoe has 8 cups of whole-wheat flour. If each loaf of her favorite bread requires Three-fourths of a cup of whole-wheat flour, how many whole loaves of bread can she make using 8 cups?
A number line going from 0 to 8.
4 loaves
6 loaves
10 loaves
11 loaves
Answer:
10
Step-by-step explanation:
Mandy took a total of 6 quizzes over the course of 3 weeks. At this rate, attending 5 weeks of school this quarter, how many quizzes will Mandy have taken?
Answer
2 is the unit rate
Step-by-step explanation:
6/3 =2x5=10
Answer:
2
Step-by-step explanation:
........................?