Answer:
The 99% confidence interval of the standard deviation of the pulse rates of men is
[tex][ 7.949 \ \ , \ 14.387 ][/tex]
Step-by-step explanation:
From the question we are told that
The sample size is n = 40
The mean is [tex]\= x = 67.3 \ beats \ per \ minute[/tex]
The standard deviation is [tex]s = 10.3 \ beats \ per \ minute[/tex]
Generally the degree of freedom is mathematically represented as
[tex]df = n- 1[/tex]
=> [tex]df = 40- 1[/tex]
=> [tex]df = 39[/tex]
From the question we are told the confidence level is 99% , hence the level of significance is
[tex]\alpha = (100 - 99 ) \%[/tex]
=> [tex]\alpha = 0.01[/tex]
Generally from the chi distribution table the critical value of at a degree of freedom of is
[tex]X^2 _{\frac{\alpha }{2} , 39} = 65.476[/tex]
Generally from the chi distribution table the critical value of at a degree of freedom of is
[tex]X^2 _{1- \frac{\alpha }{2} , 39} = 19.996[/tex]
Generally the 99% confidence interval of the standard deviation of the pulse rates of men is mathematically represented as
[tex]s \sqrt{\frac{n- 1}{X^2_{1- \frac{\alpha }{2} , n-1} } }\ \ , \ s \sqrt{\frac{n- 1}{X^2_{\frac{\alpha }{2} , n-1} } }[/tex]
=> [tex]10.3 \sqrt{\frac{40- 1}{65.476} }\ \ , \ 10.3 \sqrt{\frac{40- 1}{19.996} }[/tex]
=> [tex][ 7.949 \ \ , \ 14.387 ][/tex]
Jorge Martin y Andres compraron una pieza grande de que
so en oferta y la dividieron en partes iguales. Jorge le regalo
a su hermana la mitad del queso que le toco que parte de
todo el queso recibió la hermana de Jorge??
Answer:
theres no numbers and its in Spanish
what is 3/4 multiple by 114/5
Answer:
17 1/10
Step-by-step explanation:
17 is the whole number
Which algebraic expression represents the amount of money four friends will pay to split the cost of a $20.00 gift?
A) f + 20
B) 20f
C) 20 ÷ f
D) f ÷ 20
3.2 x 10-2 +3.2 x 10-4 +
28 x 10-2
Answer:
336 I assume if using PEMDAS
Step-by-step explanation:
omg pls helppppp brainliest for who answers first
Answer:
The length is 20 m, the width is 10 m, and the area is 200 m.
Step-by-step explanation:
Here is why, since the length is 16 cm we first divide by 4 then multiply by 5. When we divide by 4 we get 4 and when we multiply by 5 to get 20. Then, we do the same for the width to get 10. Lastly, we just multiply both together.
What is the value of f(-3)?
Answer:
3) -11
Step-by-step explanation:
f(-3)=5*(-3)+4
f(-3)=(-15)+4
f(-3)=-11
Given:
f(x) = 5x + 4
To Find:
f(-3)
Answer:
(3) -11
Step-by-step explanation:
Evaluate 5x + 4 where x = -3:
[tex] \longrightarrow [/tex] 5(-3) + 4
5(-3) = -15:
[tex] \longrightarrow [/tex] -15 + 4
4 - 15 = -11:
[tex] \longrightarrow [/tex] -11
2.4 x 24.12 need help I’m stuck help
Answer: 57.888
Step-by-step explanation: you have to use long multiplication to evaluate
Quadratic Equation.
Solve the following:
a) a(a-9) = 0 b) 2m(m-5)=0 c) 3r(4r-5)=0
(PLS HLEP ASAP!! I WILL GIVE BRAINLIEST IF U HELP MEEEE ;-;!!)
(Btw u have to use fraction models to solve it )
Answer:
4 1/4
Step-by-step explanation:
Answer:
4 1/4
Step-by-step explanation:
1 1/2 + 2 3/4
= 3/2 + 11/4
= 6/4 + 11/4
= 17/4
= 4.25
pls help write the expression as the logarithm of a single number! If correct, will select you as most brainly!
Answer:
log ([tex]\frac{x^{3} x y^{6} }{z^{2} }[/tex])
Step-by-step explanation:
Given expression:
3log x + 6log y - 2log z
We are to express the given log as single expression;
To solve this problem, we must apply some simple logarithmic rules.
3log x + 6log y - 2log z;
First, re-write to give;
x log y = log yˣ
3log x + 6log y - 2log z = log x³ + log y⁶ - log z²
Then,
log t + log k - log y = log ([tex]\frac{t x k}{y}[/tex])
log x³ + log y⁶ - log z² = log ([tex]\frac{x^{3} x y^{6} }{z^{2} }[/tex])
15 more than three times a number is equal to 75
Also please give me the step by step
Answer:
x=20
Step-by-step explanation:
15+3x=753x+15=753x+15+15=75+153x=60[tex]\frac{3x}{3} =\frac{60}{3}[/tex] x=20I hope this explanation was helpful.
Step-by-step explanation:
soln,
15+3x=75
or, 3×15=75
or,3×15+15=75+15
or,3x÷3=60÷3
or,x=20
ans= 20
Question 17 (5 points)
Solve 4x + 3y = 2 for y.
A) y= - 4x + 2
B) y = 4x-2
C) y= 4/3x - 2/3
D) y= -4/3x+2/3
Answer:
D
Step-by-step explanation:
y= -4/3x+2/3
Please help with 4 ill give out brainlyist . :(
Answer:
b
Step-by-step explanation:
Answer:
None of the above
Step-by-step explanation:
All of them say =27 but the total sum is not 27
Morgan is buying holiday gifts for her friends she can spend at most $95. Write an inequality to represent the amount of money m. Morgan can spend on each friends gift. What is the inequality
Answer:
$95÷f = m
Step-by-step explanation:
In sentence form
$95 divided by the number of friends(f) equals the amount of money(m) she can spend on each.
Write a word problem with 6 divided 3/4.
Answer:
If she divided 6 of a pound into equal portions of 3/4 of a pound, how many portions did she make?
Step-by-step explanation:
6 ÷ 3/4
Emily loves to read. She read 527 hours in 31 weeks. If she read an equal number of hours each week, how many hours did she read each week?
Answer: Emily read 17 hours a week.
Step-by-step explanation: Divide the number of hours by weeks. 527/31=17
Write an expression for "777 divided by ccc."
Answer:
7/c
Step-by-step explanation:i said so and im right so put it in and try to prove me wronge :)
PLZ HELP WILL GIVE BRAINLIEST AND ITS NOT TOO HARD JUST IN A RUSH!!!! ;)
Answer:
5/6
Step-by-step explanation:
"Thus, 5/6 is the simplified fraction for 20/24 by using the GCD or HCF method. Thus, 5/6 is the simplified fraction for 20/24 by using the prime factorization method."
3. Gavin deposited $200 into his savings account that is compounded semi-annually at an interest rate of 9%. Gavin hoped he would have enough money in 8 years to buy a $400 gaming console for college. Is Gavin correct? Write and solve an equation, showing your work to justify your answer.
Answer:
His answer is correct. Because..
Step-by-step explanation:
9 ÷ 4 = 2.25
(Nine divided by four is Two point Twenty-Five.)
His answer was correct:
(200*0.09)=18
18*16=288
200+288=488
-8(3-s)=32 how will I solve for s becaus I am confused
Answer:s=7
Step-by-step explanation:
-8(3-s)= 32
Multiplication
-24+8s=32
Here you have to add 24 on both sides
8s= 56
Division by 8
s=7
Answer:
S=7
Step-by-step explanation:
Simplify: (2x^2)^3 (3x)^2
Answer:
(2 ^ 3 ⋅ 3 ^2 x ^ 8)
Step-by-step explanation:
11. The table shows the relationship between x and y values.
х
35
45
65
55
82
y
94
88
76
What is the slope of the linear function in decimal form?
Answer:
Slope = 0.6
Step-by-step explanation:
Slope of a line passing through two points [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex] is,
m = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]
By applying this rule in the table attached,
Let the two points are (35, 94) and (45, 88) through which the graph of a linear function is passing.
Slope of the linear graph = [tex]\frac{94-88}{45-35}[/tex]
= [tex]\frac{6}{10}[/tex]
= 0.6
Therefore, slope of the linear function is 0.6
y = -9x + 5
y = –10.
Answer:
x=5/3 simplified x= 15/9
Step-by-step explanation:
In the figure below, angle y and angle x form vertical angles. Angle x forms a straight line with the 50° angle and the 40° angle.
Write and solve an equation to determine the measure of angle y.
Answer:
The answer is "[tex]\angle y = 90^{\circ}[/tex]"
Step-by-step explanation:
Please find the image file of the angle in the attachment.
Each line is 180° straight because the [tex]\angle x[/tex]-axis of the 40° and 50° angles is a straight line:
[tex]= \angle x + 40^{\circ} + 50^{\circ} = 180^{\circ}[/tex]
Use this formula and isolate x.
[tex]\angle x + 40^{\circ} + 50^{\circ} = 180^{\circ}\\\\ \angle x + 90^{\circ} = 180^{\circ} \\\\ \angle x = 180^{\circ} - 90^{\circ} \\\\ \angle x = 90^{\circ}\\\\[/tex]
Since the two are vertical angles, they have the same measurement. These have the same measurement. If [tex]\angle x = 90^{\circ}[/tex] and [tex]m \angle x = m \angle y[/tex], then [tex]\angle y = 90^{\circ}[/tex]
Analyze the graph. Determine what, if any, association there is. Explain.
On a graph, points are grouped together to form a curve.
answer with explanation:
From the scatter plot we may observe that the data points follow a parabolic path.Hence, the association between the points is non-linear also, the data points follow a quadratic association.
Also, when we make a quadratic curve around these data points we see that all of the data points will be closely related to the curve.
Hence, there is a strong association between the data points.
Answer:
It follows a curve and it is a cluster.
Step-by-step explanation:
A. A number line from 0 to 20 in increments of 2. A point is at 4 with a bold line starts at 4 and is pointing to the right. B. A number line from 0 to 20 in increments of 2. An open circle is at 4 with a bold line starts at 4 and is pointing to the left. C. A number line from 0 to 20 in increments of 2. A point is at negative 4 with a bold line starts at negative 4 and is pointing to the right.
The graph that represents x < 4 is . Is it A or B or C
The graph that represents 4 ≤ x is . Is it A or B or C
Answer:
B & A Is The Answer
Step-by-step explanation:
Answer:
1. B 2. A
Step-by-step explanation:
12 divided by 5/8 release help me thank you!
12 ÷ 5/8
12 x 8/5
(12 • 8)/5
96/5
Done!
A line has a slope of 7 and a y-intercept of -2
Answer: it's -1
Step-by-step explanation: Hope this helps
Can I have brainliest?
The local bowling alley charges $8 for 2 games of bowling and $3 for each additional game. You have a $20 bill. Let `x\ `stand for the total number of games you can bowl. Write an inequality to represent the total number of games you can bowl. Write the ORIGINAL inequality. Do NOT simplify.
Answer:
8 + 3x ≤ 20
Step-by-step explanation:
Given
2 Games = $8
Additional Game = $3
Amount = $20
Required
Determine the inequality that represents the number of games
From the question, we understand that the minimum number of games that can be played is 2.
So, the expression can be:
Cost of 2 games + Cost of additional games ≤ Amount
This gives:
8 + 3 * x ≤ 20
Where x represents the additional number of games
By simplifying the expression, we have:
8 + 3x ≤ 20
what does descendant mean
Answer:
a person, plant, or animal that is descended from a particular ancestor.