Answer:
3 students
Step-by-step explanation:
There are 30 students in Mrs. Woodward’s class.
of the class has their own cell phone, so
students have their own cell phones.
of those 6 students are allowed to use social media. So,
students are allowed to use social media.
Answer:
a) 25.14% percentage of the scores expected to be greater than 600.
b) 7.49% percentage of the scores expected to be greater than 700.
c) 31.56% of the scores are expected to be less than 450.
d) 43.3% of the scores are expected to be between 450 and 600.
Step-by-step explanation:
Problems of normally distributed samples can be solved using the z-score formula.
In a set with mean and standard deviation
, the zscore of a measure X is given by
After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X. Subtracting 1 by the pvalue, we This p-value is the probability that the value of the measure is greater than X.
For this problem, we have that:
The College Boards, which are administered each year to many thousands of high school students, are scored so as to yield a mean of 513 and a standard deviation of 130, so .
What percentage of the scores can be expected to satisfy each of the following conditions?
a) Greater than 600
This is 1 subtracted by the pvalue of Z when
has a pvalue of 0.7486.
So there is a 1 - 0.7486 = 0.2514 = 25.14% percentage of the scores expected to be greater than 600.
b) Greater than 700
This is 1 subtracted by the pvalue of Z when
has a pvalue of 0.9251.
So there is a 1 - 0.9251 = 0.0749 = 7.49% percentage of the scores expected to be greater than 700.
c. Less than 450
This is the pvalue of Z when
has a pvalue 0.31561.
So, 31.56% of the scores are expected to be less than 450.
d. Between 450 and 600
This is the subtraction of the pvalue of by the pvalue of
So
43.3% of the scores are expected to be between 450 and 600.
Answer:
7/10
Step-by-step explanation:
In order to solve this you just have to make the division of 70 by 100, and thenn reduce that as much as you possibly can:
So now you know that the fraction of a number that 70% of that number represents is 7/10.
Hello there!
A number that is 70% of a number is 7/10 of that number in fraction form!
I hope this was helpful and have a great rest of your day!
Answer:
Option C, The triangle is an isosceles triangle.
Step-by-step explanation:
On a coordinate plane, triangle A B C is shown. Point A is at (negative 1, 3), point B is at (negative 5, negative 1), and point C is at (3, negative 1).
Use distance formula to find
We find only two sides are equal and third side is not equal
Hence this is an isosceles triangle
Answer:
Options A, B, and C
Step-by-step explanation:
Power of Taking the Test
Answer:
true
Step-by-step explanation:
The international system of measures established for units that have to do with weight the standard measure would be in grams, to express larger units to avoid very long numbers it was established that one kilogram equals 1000g, so the ratio between them is 1000 .
to convert from grams to kilograms we divide by 1000.
to convert kilograms to grams multiply by 1000
A. True
................
Answer:
just one
Step-by-step explanation:
if it is established that the last names of pat smith go first than those of kelly jones and each one has only one lastname as indicated by the problem, there is only one possibility that the last name for the married couple is the combination "smith jones"
In simplified form the expression can be written as .
An expression is a mathematical statement consisting of variables , coefficients and mathematical operators.
An expression is given
Converting them into exponent form , the expression can be written as
Therefore simplifying
Therefore In simplified form the expression can be written as .
To know more about Expression
#SPJ2
Answer:
Step-by-step explanation:
/
= /
=
= (=
)
Answer:
5 - 4m
Step-by-step explanation:
Answer:
Is this what you were looking for?
Answer:
x/2 + 7
Step-by-step explanation:
First you need to figure out the equation.
Quotient means you are dividing something, so you are dividing x and 2.
Increased means you are adding something, so somewhere in the equation you will add 7.
Here is what the equation would be:
x/2 + 7
Answer:
Pat's right, because there are no permutations.
Step-by-step explanation:
Since there is a specific order, there are no permutations. The relationship between the binomial distribution and Pascal's triangle happens when there are permutations.
So, the correct logic is Pat's.
Each flip has 0.5 probability of having the desired result. There are four flips. So:
.
Answer:
680 matches are played altogether.
Step-by-step explanation:
A number is odd if the rest of the division of the number by 2 is one.
So, for each round, we have that the number of matches played is the number of players in the start of the round divided by 2.
The number of players at the end of the round is the number of matches(each match has a winner, that remains in the tournament) plus the rest of the division(the odd player that sit out the round).
So
First round:
681 players
681/2 = 340 mod 1
Number of matches in round: 340
Total number of matches: 340
Number of players at the end of the round: 340 + 1 = 341
Second round
341 players
341/2 = 170 mod 1
Number of matches in round: 170
Total number of matches: 340 + 170 = 510
Number of players at the end of the round: 170 + 1 = 171
Third round
171 players
171/2 = 85 mod 1
Number of matches in round: 85
Total number of matches: 510 + 85 = 595
Number of players at the end of the round: 85 + 1 = 86
Fourth round
86 players
86/2 = 43 mod 0
Number of matches in round: 43
Total number of matches: 595 + 43 = 638
Number of players at the end of the round: 43 + 0 = 43
Fifth round
43 players
43/2 = 21 mod 1
Number of matches in round: 21
Total number of matches: 638 + 21 = 659
Number of players at the end of the round: 21 + 1 = 22
Sixth round
22 players
22/2 = 11 mod 0
Number of matches in round: 11
Total number of matches: 659+11 = 670
Number of players at the end of the round: 11 + 0 = 11
Seventh round
11 players
11/2 = 5 mod 1
Number of matches in round: 5
Total number of matches: 670+5 = 675
Number of players at the end of the round: 5 + 1 = 6
Eight round
6 players
6/2 = 3 mod 0
Number of matches in round: 3
Total number of matches: 675+3 = 678
Number of players at the end of the round: 3 + 0 = 3
Ninth round
3 players
3/2 = 1 mod 1
Number of matches in round: 1
Total number of matches: 678+1 = 679
Number of players at the end of the round: 1 + 1 = 2
Tenth round
2 players
2/2 = 1 mod 0
Number of matches in round: 1
Total number of matches: 679+1 = 680
Number of players at the end of the round: 1 + 0 = 1(the champion)
So, 680 matches are played altogether.