Answer:
H0: μm − μw = 0
against the claim
Ha: μm − μw ≠ 0
Since the calculated value of z= 0.6177 does not lie in the critical region the null hypothesis is accepted that men and women have equal success in challenging calls.
Step-by-step explanation:
1) Let the null and alternate hypothesis be
H0: μm − μw = 0
against the claim
Ha: μm − μw ≠ 0
2) The significance level is set at 0.05
3) The critical region is z > + 1.96 and z< -1.96
4) The test statistic
Z= p1-p2/ sqrt [pcqc( 1/n1+ 1/n2)]
Here p1= 411/ 1390= 0.2956 and p2= 213/753=0.2829
pc = 411+ 213/1390+753
pc=624/2143
pc= 0.2912
qc= 1-pc= 1-0.2912=0.7088
5) Calculations
Z= p1-p2/ sqrt [pcqc( 1/n1+ 1/n2)]
z= 0.2956-0.2829/√ 0.2912*0.7088( 1/1390+ 1/753)
z= 0.0127/ √0.2064 (0.00204)
z= 0.0127/0.02056
z= 0.6177
6) Conclusion
Since the calculated value of z= 0.6177 does not lie in the critical region the null hypothesis is accepted that men and women have equal success in challenging calls.
From a hot-air balloon, Meena measures a 37° angle of depression to a landmark
that's 1865 feet away, measuring horizontally. What's the balloon's vertical distance
above the ground? Round your answer to the nearest hundredth of a foot if necessary.
Answer:
The balloon is 1405.38 feet above the ground.
Step-by-step explanation:
tan 37 = opp/adj = x/1865
tan 37/1 = x/1865
1865 tan 37 = x
x=1405.378303...≈1405.38
Can someone please answer= 20 points
Below is a geometric sequence, what numbers CANNOT be apart of the sequence? Select all that apply.
F(1)=___
F(2)=-16
F(3)=___
F(4)=-256
a.-4
b.4
c.64
d.-64
e,1024
f.-1024
Pls give explanation if possible...
find the angles, θ<0<360, that satisfy the equation below, to the nearest 10th of a degree.
cos(θ)= -√7/5
Answer:
[tex] \cos( \theta) = \frac{ - \sqrt{} 7}{5} \\ \theta = \cos {}^{ - 1} ( \frac{ \sqrt{} - 7}{5} ) \\ \theta = 58.1 \degree, \: 121.9 \degree, \: 238.1 \degree[/tex]
6+4*{3+7}=
um i need help
Answer:
46
Step-by-step explanation:
6+4×10=6+40
6+40=46
Solve for
x. Round to the nearest tenth, if necessary.
Answer:
Step-by-step explanation:
take 18 degree as reference angle
using cos rule
cos 18=adjacent/hypotenuse
0.95=x/27
0.95*27=x
25.65=x
25.7=x
What is formula for area of the base of a cylinder? A) Area = Pi/r. B) Area= Pi *r C) A= Pi* r ^. or. (r*r). D) A= diameter* radius
Answer:
The formula for the area of the base of a cylinder is π r²
simplification of 1.5kg : 250gm
ratio question
Answer:
1500g:250g
=
6:1
Hope I could help
solve this: - 4 h = 32
Answer:
o
Step-by-step explanation:
-4h=32
h=32/-4
h=-8
stay safe healthy and happy.Answer:
h=-8
Step-by-step explanation:
-4h=32
Isolate h by dividing -4 on both sides
h=32/-4
Simplify
h=-8
If this helps please mark as brainliest
Claire is 11 years old. She is 5 years younger than her brother Gary who is y years old. Which equation represents this situation?
Answer:
y = 11 + 5
Step-by-step explanation:
So she is 5 years younger, which would mean that it would be y - 5, and using inverse operations, we get y = 11 + 5
hope this helps:/
WILL GIVE BRAINLIEST
Answer:110 degrees
Step-by-step explanation:
There are 4 green marbles and 2 red marbles in the jar. You just randomly draw one by one without replacement and stop when you get the first red marble. Let X be the number of green marbles you draw when you stop. Get the probability distribution of X and find the expectation of it
Answer:
Then the probability distribution is:
P(0) = 1/3
P(1) = 4/15
P(2) = 1/5
P(3) = 2/15
P(4) = 1/15
The expected value for X is:
EV = 1.33...
Step-by-step explanation:
We have a total of 6 marbles in the jar.
The probability of getting a red marble in the first try (X = 0) is equal to the quotient between the number of red marbles and the total number of marbles, this is:
P(0) = 2/6 = 1/3
The probability of drawing one green marble (X = 1)
is:
First, you draw a green marble with a probability of 4/6
Then you draw the red one, but now there are 5 marbles in the jar (2 red ones and 3 green ones), then the probability is 2/5
The joint probability is:
P(1) = (4/6)*(2/5) = (2/3)*(2/5) = 4/15
The probability of drawing two green marbles (X = 2)
Again, first we draw a green marble with a probability of 4/6
Now we draw again a green marble, now there are 3 green marbles and 5 total marbles in the jar, so this time the probability is 3/5
Now we draw the red marble (there are 2 red marbles and 4 total marbles in the jar), with a probability of 2/4
The joint probability is:
P(2) = (4/6)*(3/5)*(2/4) = (2/6)*(3/5) = 1/5
The probability of drawing 3 green marbles (X = 3)
At this point you may already understand the pattern:
First, we draw a green marble with a probability 4/6
second, we draw a green marble with a probability 3/5
third, we draw a green marble with a probability 2/4
finally, we draw a red marble with a probability 2/3
The joint probability is:
P(3) = (4/6)*(3/5)*(2/4)*(2/3) = (2/6)*(3/5)*(2/3) = (1/5)*(2/3) = (2/15)
Finally, the probability of drawing four green marbles (X = 4) is given by:
First, we draw a green marble with a probability 4/6
second, we draw a green marble with a probability 3/5
third, we draw a green marble with a probability 2/4
fourth, we draw a green marble with a probability 1/3
Finally, we draw a red marble with a probability 2/2 = 1
The joint probability is:
P(4) = (4/6)*(3/5)*(2/4)*(1/3)*1 = (1/5)*(1/3) = 1/15
Then the probability distribution is:
P(0) = 1/3
P(1) = 4/15
P(2) = 1/5
P(3) = 2/15
P(4) = 1/15
The expected value will be:
EV = 0*P(0) + 1*P(1) + 2*P(2) + 3*P(3) + 4*P(4)
EV = 1*(4/15) + 2*( 1/5) + 3*( 2/15) + 4*(1/15 ) = 1.33
So we can expect to draw 1.33 green marbles in this experiment.
15) My bag contains two books each of weight kg and 3/7 folders each of weight
kg. What is the total weight of my bag5/21? What fraction of the total weight
21
are books?
Answer:
thx for the points MWAH!
Step-by-step explanation:
Roll a 1-6 number cube twice. Probability of a
6 both times
4+3.2)×(9−2)+2.5
No links hellp meeee!
Answer:
52.9
??
Step-by-step explanation:
Choose the correct answers.
AUTOMOBILE LIABILITY BASIC INSURANCE PREMIUMS
Coverage Class 1A Class 10 Class 10 Class 2A Class 2B Class 3
Bodily Injury
(in $1,000's):
10/20
50/100
100/300
Property Damage
$5,000
$10.000
$25.000
317.80
383.60
407.50
365.40
440.70
480.90
413.40
497.80
530.92
587.00
709.30
751.88
.
761.00
917.90
976.96
428.40
517.60
549.70
61.00
67.00
73.20
69.40
76.20
84 80
79.80
87.80
96.80
113.40
124.80
136.00
163.80
180.00
196.00
THE
81.80
90.00
98 20
Class 1A: No male driver under 25 car not used for business and not driven to or from work
Class 1B: No male driver under 25: car not used for business and driven to work fewer than
ten miles away
Class 1C: No male driver under 25; car not used for business and driven to work at least ten
Class 2A: One or more male drivers under 25 who are married or are not owner(s) of the car.
Class 28: Unmarried male driver under 25 who is owner of the car.
Class 3: No male driver under 25 car used for business
Sue Jones is insured for bodily injury in the amount of 10/20. She is at fault in an accident in which Albert
Smith is injured. Also injured in the accident is a pedestrian, Sam Dickson. Albert's medical expenses
total $12,000, Sam's come to $8,000. How much will the insurance pay?
a. for Albert
b. for Sam
c. total
Identify the range of the function shown in the graph.
10
17
A. All positive real numbers
B. All real numbers
C. 20
D. All positive integers
Answer:
I believe the answer is B) All real numbers
Tenley makes stained glass windows. She used this piece of stained glass in one of the windows. How many right angles does this piece of stained glass appear to have?
Answer:
I think its 0
Step-by-step explanation:
Which numerical pattern is linear?
A.0, 1, 4, 9,
B.1, 2, 4, 8, ...
C.1, 3, 6, 10, ...
D.2, 4, 6, 8, ...
Answer:
D.2, 4, 6, 8, ...
Step-by-step explanation:
This is linear because all successive terms in the numerical pattern have the same difference between them.
in an examination for final student of a school 60 offered history, 50 economics and 48 literature, 30 Offered history and economics 16 Offered history and literature 22 offered economics and literature if 10 candidates offered all the three subject find
1: the number that offered history
2:the number that offered only economics
3:the number that offered only literature
4:how many candidates sat for the examination assuming that each candidate sat for at least one subject
Step-by-step explanation:
A 106 offered history to students
PLEASE HELP ME WITH THIS QUESTION I WILL GIVE BRAINLIEST!!!
Answer:
I think is B
Step-by-step explanation:
A spinner has 14 equal sectors with different letters for each sector, as shown below:
Victoria spins the spinner 18 times, and it stops at the letter 'B' 10 times. If she spins the spinner a 20th time, what is the theoretical probability that this time it will stop at the letter 'B'?
PLZ SHOW WORK
BRAINLIEST PLEASE HELP
Answer:
1/14
Step-by-step explanation:
The sectors labeled are B, Y, G, C, P, F, O, V, M, A, D, E, H, and R.
Total number of sectors = 14.
When Victoria spins the spinner 18 times, and it stops at the letter B 10 times.
When Victoria spins the spinner the theoretical probability that this time it will stop at the letter B = Favourable outcomes ÷total number of outcomes.
Favourable outcomes =1 and Total number of outcomes = 14.
Hence Theoretical Probability = 1 over 14.
Answer:
that child is correct so give them brainylest.
Step-by-step explanation:
-. A businessman plans to retire in 30 years. As part of his retirement plan, he has
invested $8,000 in a public utility bond that will increase his investment at a rate of
6% per year, compounded annually. Which is the best approximation of the value of
the investment after 30 years?
Answer:
A = $45948
Step-by-step explanation:
Given the following data;
Principal = $8000
Interest rate = 6% = 6/100 = 0.06
Time = 30 years
To find the future value, we would use the compound interest formula;
[tex] A = P(1 + \frac{r}{100})^{t}[/tex]
Where;
A is the future value.
P is the principal or starting amount.
r is annual interest rate.
t is the number of years for the compound interest.
Substituting into the equation, we have;
[tex] A = 8000(1 + \frac{6}{100})^{30}[/tex]
[tex] A = 8000(1 + 0.06)^{30}[/tex]
[tex] A = 8000(1.06)^{30}[/tex]
[tex] A = 8000(5.7435)[/tex]
A = $45948
can anyone help me with this pls
D should be your answer :)
17
Here are ticket prices for a theme park.
Single tickets
Adult £48 Child £26
Special offer tickets
1 adult and 2 children £82
2 adults and 2 children £120
17 (a)
Freya buys tickets for 3 adults and 4 children.
She pays the cheapest possible total cost.
How much does she save compared to buying all single tickets?
Answer:
She saved $46
Step-by-step explanation:
1. Price for 3 adults would be $144
2. Price for 4 children would be $104
3. Total price for individual tickets would be $248
4. She bought 1 of [Combo 1] and 1 of [Combo 2]
5. Therefore, she paid $202
6. She saved $46
The line passes through points (2,7) and (4,8)
Answer:
Explanation:
hope it will helps please heart my answer!
20)
The cost (C) of materials for a deck varies jointly with the width (w) and the length (1).
If c = $470.40 when w = 12 and 1 = 16, find the cost when w = 10 and I = 25? Be sure to respond in
complete sentence that explains your answer in relation to the question
Answer:
u mad bruv? xD Xd DxD XDXDXDdd
Step-by-step explanation:
I need your help s.o.s PLEASE
Answer:
Area = 17.5yd
Step-by-step explanation:
Area formula is Area = h * b/2
Area = 5 * 7/2
Area = 17.5
Answer:
is this area or volume? if it's Area 1/2 b*h
Please help me solve this problem
Answer:
D, 225
Step-by-step explanation:
Because this equation already has a1, it's useless to test with that, so instead solve for a2.
You would have a2 - 5a1, which would get you a2 = 5(9) because we already know what a1 is, which is 9. a2 = 45
Now we have a2, which is 45, so now we solve for a3
We would have a3 = 5a2 = a3 = 5(45) which is 225 which is a3
Also thanks for the fat 18 points dude, you really put 36 points into this one big value hope this one helped you a lot
what is the additive inverse of the complex number 9-4i?
B on edg
-9+4i
Answer:
-9 + 4i
Step-by-step explanation:
The additive inverse ("opposite") of a complex number a + bi is -a - bi.
Just use the opposites of a and b.
graph triangle cuz with vertices x(-2, -4), y(2, -1), and z(4, -3) on the coordinate grid.