Answer:
a. 0.57
b. 0.22
c. 0.87
d. 0.9450
Step-by-step explanation:
A.
P(X>=1)
= 0.35 + 0.15 + 0.06 + 0.01
= 0.57
This is the probability of catching one or more fishes.
b.
P(X>=2)
0.15 + 0.06 + 0.01
= 0.22
This is the probability of catching 2 or more fishes.
C.
Compute μ
μ = E(X)
= (0x0.43) + (1x0.35) + (2x0.15) + (3x0.06) + (4x0.01)
= 0+0.35+0.3+0.18+0.04
= 0.87
D.
The standard deviation
Sd = √V(X)
V(X) = E(X²) - (E(X))²
E(X²) = (0²x0.43)+(1²x0.35)+(2²*0.15)+(3²*0.06)+(4²*0.01)
E(X²) = 0.35+0.6+0.54+0.16
= 1.65
V(X) = 1.65 - (0.87)²
= 1.65 - 0.7569
= 0.8931
Sd = √0.8931
= 0.9450
A superintendent of a school district wants to understand the link between attendance and grade point average, or GPA. The GPA is out of 4.0 points, with 4.0 being the highest possible. The percent attendance and GPA of 10randomly sampled students from the superintendent's district were collected. This sample data is reproduced in the table below. Calculate the correlation coefficient r using a TI-83, TI-83 plus, or TI-84 graphing calculator (round your answer to two decimal places).
"GPA" 3.5 2.38 1.16 3.83 3.28 3.69 3.46 3.87 3.69 3.75
Attendance 91% 74% 80% 97% 59% 78% 90% 98% 94% 87%
r=_______.
Answer:
0.4136
Step-by-step explanation:
Given the data:
"GPA":
3.5
2.38
1.16
3.83
3.28
3.69
3.46
3.87
3.69
3.75
Attendance
0.91
0.74
0.80
0.97
0.59
0.78
0.90
0.98
0.94
0.87
The value of R (correlation Coefficient) obtained for the two variables GPA and ATTENDANCE is 0.4136. This shows that a fairly weak relationship between the GPA obtained and the attendance of students. Hence, even though a positive relationship exist between the two variables, that is, an increase in one variable yields a corresponding increase in the other and vice versa. The correlation Coefficient value for both values is just fairly strong.
A restaurant orders corn tortillas and flour tortillas. The ratio of the number of corn tortillas to the number of flour tortillas is 2:3. What is the ratio of the number of flour tortillas to the number of tortillas
Answer: 3:5
Explanation: The ratio of Corn tortillas to flour tortillas is 2:3, so you look at the total number of tortillas (5) and put the number of flour tortillas in front of it (3). Leaving you with 3:5
Answer:
3:5
Step-by-step explanation:
Write an equation to match this graph. i will give brainlyest
Answer:
5÷7
Step-by-step explanation:
Im guessing this or adfibg
please help me will give brilliant
Given,
Inequality : y-5>2x-10
To find,
Draw the graph.
Solution,
We have,
y-5>2x-10
First we simplify the above inequality.
Taking variables to LHS and constant to RHS.
y-2x>5-10
y-2x>-5
The points are (0,-5) and (3,1).
The attached figure shows the graph for the above equation. So, the correct graph is in option (2).
A bag of popcorn contains 945 calories and serves 7.5 people. How many calories are in each serving?
Please help
Answer:
126
Step-by-step explanation:
945÷7.5=126
I HOPE IT HELPS!
Was she old enough?
A: Yes
B: Please yes
C: if u don't say yes I'm going to jail please say yes
Answer:
what are you talking about
Step-by-step explanation:
NEED HELP ASAP Select the correct answer.
Which Inequality is graphed on the coordinate plane?
Oy? -4r + 2
O y > -x + 2
y = -x + 2
o y <-4+ + 2
d
Answer:
D: y < -1/4x + 2
Step-by-step explanation:
I just did it on Edmentum
The inequality which is graphed on the coordinate plane is y > -x + 2, the correct option is B.
What is inequality?Inequality is defined as the relation which makes a non-equal comparison between two given functions.
An inequality is a mathematical statement that compares two values or expressions using a relational operator, such as less than (<), greater than (>), less than or equal to (≤), greater than or equal to (≥), or not equal to (≠). Inequalities are used to describe relationships between quantities or to express constraints or conditions.
We are given that;
The graph of inequality
Now,
the graph shows a dashed line with a slope of -1 and a y-intercept of 2, which is the equation y = -x + 2. The dashed line means that the points on the line are not included in the solution set of the inequality. The shaded region above the line means that the points in that region satisfy the inequality.
Therefore, by the inequality the answer will be y > -x + 2.
Learn more about inequality ;
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Answer:
Eut
Step-by-step explanation:
fooyyyyyyyyyyyyyddffghhgyfdxdvvrvrvrhntbrvd. vsvd ebe. d dvd
1/2(x+2)+7 = 3x + (-32)
PLEASE HELP AND EXPLAIN
Answer:
X=16
Step-by-step explanation:
A model maker wants to make a model of a ship. He will use a scale of 1:50. The ship was 100ft long. 1 foot=0.3m
you are a girl or boy. #/
amy ate 27.5 cookies in 5.5 minutes. How many cookies did she eat per minute?
Answer:
5 cookies per minute.
Step-by-step explanation:
To do this, we divide 27.5 by 5.5 to get the unit rate, in other words, the amount of cookies eaten per minute. This gets us 5. That means Amy ate 5 cookies per minute.
Answer:
Amy ate 5 cookies per minute
Step-by-step explanation:
Do get the unit rate - the number of cookies per minute - you can divide 27.5/5.5. You then get 5. This means that Amy ate 5 cookies per minute.
Tell Amy to watch her diet...
M<5 = 98 degrees , find m< 4
Answer:
Step-by-step explanation:
if M<5=98, angle M<4=180-98=82
angles 5 and 1 are equal
angles 8 and 4 are equal
-8x-6 pls holpp :((((
Answer:
The answer is 48.
Step-by-step explanation:
None.
Express the product of 2x^2 +7x-10 and x+5 in Standard form.
Answer:
2x^3 + 17x^2 + 25x - 50
Step-by-step explanation:
Claire is going to invest $2,600 and leave it in an account for 18 years. Assuming the interest is compounded continuously, what interest rate, to the nearest hundredth of a percent, would be required in order for Claire to end up with $4,300?
Answer:
Rate of interest r = 2.83 % (Approx.)
Step-by-step explanation:
Given:
Amount invested p = $2,600
Amount get A = $4,300
Number of year n = 18
Find:
Rate of interest r
Computation:
A = p(1+r)ⁿ
4,300 = 2,600(1+r)¹⁸
(1+r)¹⁸ = 1.653846
Rate of interest r = 2.83 % (Approx.)
Answer: 2.80%
Step-by-step explanation:
Delta Math
Solve this equation for x.
5(1+3x)−9=4(3x−3)
x=−83
x=−19
x=23
x=89
order dessert
no dessert
split the check
one person pays
I don't understand, what's the question?
Dave typed the first 8 pages of his report in 24 minutes. At this rate, how long should it take Dave to finish typing the rest of his 60 pages report ?
Answer
180
Step By Step Explanation
24/8 = 3, 3x60=180
How many fourths are there in 1 3/4?
Answer:
12 one fourths
Step-by-step explanation:
There 3 × 1 1 / 4 = 3 × 4 = 12 one fourths in 3 .
Answer:
7
Step-by-step explanation:
1 3/4 = (4+3)/4 = 7/4 = 7 fourths
The cost of a ticket to a Circus & Fan Fair show is $69 for adults and $26 for children. On a
certain day, 5 times as many children attend the show than adults, and the total revenue is
$94,908. About how many adults bought tickets?
Let the number of adults equal x, and the number of children equal 5x.
26(5x) + 69x = 94908
194x = 94908
x = approx. 489
About 489 adults bought tickets.
A total of 489 adults take tickets to the circus & Fan Fair show.
How to form an equation?Determine the known quantities and designate the unknown quantity as a variable while trying to set up or construct a linear equation to fit a real-world application.
In other words, an equation is a set of variables that are constrained through a situation or case.
Let's say the number of tickets that adults bought is a and the number of tickets that children bought is c.
Then,
26(5a) + 69c = 94908
194a = 94908
a = 489.21 but we need to take the whole number and practical number so it will be 489.
Hence "A total of 489 adults take tickets to the circus & Fan Fair show".
For more about the equation,
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Help I need help I have 20 missing assignments
2. PLZZZ help math (O_O)
U don’t have to answer them all but at least answer one question if u answer make sure to member them so I know which one is which.
Answer:
1) 3
2) 26
3) 50
4) 20
5)20
Step-by-step explanation:
Last month, a car dealership sold 80 cars. Of all the cars sold, 15% of them were red. How many cars that were sold were red?
Answer:
12 red cars
Step-by-step explanation:
15% is 0.15
So, you do 80 × 0.15, which is 12.
A rectangular box has length 20cm, width 6cm and height 4cm. find how many cubes of size 2cm that will fit into the box.
Answer:
[tex]\boxed{\pink{\sf The \ number \ of \ cubes \ that \ can \ be \ fitted \ is 60 .}}[/tex]
Step-by-step explanation:
Given dimensions of the box = 20cm × 6cm × 4cm .
Dimension of the cube = 2cm × 2cm × 2cm .
Therefore the number of cubes that can be fitted into the box will be equal to the Volume of box divided by the Volume of the cube. So ,
[tex]\boxed{\red{\bf \implies No. \ of \ cubes \ = \dfrac{Volume \ of \ box}{Volume \ of \ cube }}}[/tex]
[tex]\bf \implies n_{cubes} = \dfrac{20cm \times 6cm \times 4cm .}{2cm \times 2cm \times 2cm } \\\\\bf\implies n_{cubes} = 10 \ times 3cm \times 2cm \\\\\implies \boxed{\bf n_{cubes}= 60 }[/tex]
Hence the number of cubes that can be fitted in the box is 60 .a student walks 2 kilometers in 30 minutes. What is the students average speed in kilometers per hour?
Answer:
4 km/h
Step-by-step explanation:
Answer:
4 kilometers per hour
Step-by-step explanation:
The noise level of a library is about 40 decibels. The noise of traffic has a rating of about 85 decibels. How many times stronger is the noise of traffic than the noise of a library?
Answer:
2.125
Step-by-step explanation:
LIbrary noise = 40 decibels
traffic noise = 85 decibels
how many does 40 take to make 85? = X
40X=85
X=85/40
2.125
Secured debt usually has _____.
longer loan terms
collateral
lower interest rates
all of the above
Answer:
all of the above
Step-by-step explanation:
Question 6 of 14 Type the correct answer in the box. Use numerals instead of words. Joe owns a fast-food restaurant and wants to know the average time it takes for customers to receive their orders. His restaurant serves about 500 customers a day. He timed 5 orders, and the order times he collected, given in minutes, are shown below. Can the approximate order fulfillment time for all of the restaurant's customers be calculated from the given data? If so, calculate it. Non-integer answers should be rounded to the nearest tenth. If no assumption can be made, type "0" in the box. The approximate order fulfillment time for all of the restaurant's customers is minutes.
Answer:
The approximate order fulfillment time for all of the restaurant's customers is 0 minutes.
determine the value of x
Answer:
21
Step-by-step explanation:
pls help me due today
Answer:
a - 8/2
Step-by-step explanation:
i hope this help;-)
Answer:
[tex]\frac{1}{2} (a - 8)[/tex]
Step-by-step explanation:
[tex]\frac{1}{2} (a - 8)[/tex] = [tex]\frac{1}{2}a - 4[/tex]
they are equal because 8 divided by 2 is 4 so you still get [tex]\frac{1}{2}a - 4[/tex]