Answer:
There is not sufficient evidence to support the claim that the technique performs differently than the traditional method.
Step-by-step explanation:
The null hypothesis is:
[tex]H_{0} = 95[/tex]
The alternate hypotesis is:
[tex]H_{1} \neq 95[/tex]
The test statistic is:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, [tex]\sigma[/tex] is the standard deviation and n is the size of the sample.
A researcher used the technique with 260 students and observed that they had a mean of 94 hours. Assume the standard deviation is known to be 6.
This means, respectively, that [tex]n = 260, X = 94, \sigma = 6[/tex]
The test-statistic is:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
[tex]z = \frac{94 - 95}{\frac{6}{\sqrt{260}}}[/tex]
[tex]z = -2.69[/tex]
The pvalue is:
2(P(Z < -2.69))
P(Z < -2.69) is the pvalue of Z when X = -2.69, which looking at the z-table, is 0.0036
2*(0.0036) = 0.0072
0.0072 < 0.01, which means that the null hypothesis is accepted, that is, there is not sufficient evidence to support the claim that the technique performs differently than the traditional method.
HELP PLEASE thank uuuuu
.
a²+25²=31²
31²-25²=a²
961-525=a²
a²=336
√a=√336
a=18.33
What is 1 1/2 divided by 1 1/4 simplied
Find the exact value of sin A in simplest radical form.
Answer:
✓10/10
Step-by-step explanation:
sinA = 1/✓10
Rationalize the denominator by multiplying by ✓10:
sinA = 1✓10/✓10✓10
sinA = ✓10/10
Drag the tiles to the correct boxes to complete pairs. Match the unknown entries in the two matrices with their correct values.
Answer:
Step-by-step explanation:
Many firms use on-the-job training to teach their employees computer programming. Suppose you work in the personnel department of a firm that just finished training a group of its employees to program, and you have been requested to review the performance of one of the trainees on the final test that was given to all trainees. The mean and standard deviation of the test scores are 80 and 5, respectively.
Assuming nothing is known about the distribution, what percentage of test-takers scored better than the trainee who scored 70?
a. Approximentaly 75%
b. Approximentaly all
c. At most 75%
d. At least 75%
e. None of the above
Answer:
d. At least 75%
Step-by-step explanation:
Since nothing is known about the distribution, we use the Chebyshev Theorem.
Chebyshev Theorem
The Chebyshev Theorem can also be applied to non-normal distribution. It states that:
At least 75% of the measures are within 2 standard deviations of the mean.
At least 89% of the measures are within 3 standard deviations of the mean.
An in general terms, the percentage of measures within k standard deviations of the mean is given by [tex]100(1 - \frac{1}{k^{2}})[/tex].
In this problem, we have that:
Mean = 80, standard deviation = 5.
What percentage of test-takers scored better than the trainee who scored 70?
70 = 80 - 2*5
So 70 is two standard deviations below the mean.
Due to the Chebyshev Theorem, we know that at least 75% of the measures are within 2 standard deviations of the mean, between 70 and 90, which means that this percentage is at least 75%, and the correct answer is given by option d.
ayuda pliz es para hoy
Answer:
2/3
Step-by-step explanation:
The initial weight of a starving animal is Wo. Its weight after t days is given by
W = Woe-0.009
I
What percentage of its initial weight remains after 34 days?
A) 73.6%
B) 76.6%
C) 69.2%
D) 26.4%
Answer:
A) 73.6%
Step-by-step explanation:
The computation of the percentage is shown below
Given that
W = Woe^{-0.09t}
After 34 days
W = W_oe^{-0.009×34}
= 0.736W_o
Now the percentage is
= 0.736 × 100
= 73.6%
The number of swings in use on average is.
Answer:
?
Step-by-step explanation:
SOMEONE PLS GIVE ME A LIKE REALLY BELIEVABLE EXCUSE FOR WHY I DIDNT TURN IN MY WORK BUT NOT ABOUT INTERNET ISSUES OR DEATH PLSSS
Answer:
HERE YOU GO
Step-by-step explanation:
Miss my dog has ate my homework and I couldn't submit it.
Answer:
Sorry I didnt turn in my work. The reason of why that happened was because i was busy most of the time going places and other things like helping my parents out with grocerys. Also, a lot is happening in my life right now and it is very hard to explain and i dont really know how to explain it either. I am really sorry i didnt turn it in. Ill try better next time.
Love, person who needs a excuse.
Step-by-step explanation:
Tanner collected 360 cans and bottles while fundraising for his basketball team This was 40% less than what Reggie collected How many cans and bottles did Reggie collect?
Answer:
Reggie collected 504 cans and bottles.
Step-by-step explanation:
40%=.40
360*.40=144
360+144=504
x - 4y = 28
x + 2y = -2
What is the Solution to the ordered pair ?
Hello there.
Your answer is going to be (8, -5).
Answer:
-5 -8
Step-by-step explanation:
Graph the inequality.
x > 4
Answer:
Step-by-step explanation:
Select the correct comparison.
Set A
Set B
.
....
24
8 10
4 6 8 12
A. The typical value and the spread are both greater in set B.
B. The typical value and the spread are both greater in set A.
C. The typical value is greater in set A. The spread is greater in set B.
D. The typical value is greater in set B. The spread is greater in set A.
Answer:i would say C ADHAKFFA
Step-by-step explanation:
Shari is adding these fractions: 1/3 + 1/4 What's her next step? 4/12 + 3/12 = 7/12 1/3 + 1/4 = 2/7 1/3 + 1/4 = 2/12 4/12 + 3/12 = 7/24 Flag Question
Answer:
4/12+3/12=7/12
Step-by-step explanation:
just took the quiz
the circumference of a circle is 65n. In terms of pi, what is the area of the circle
Answer:
In order to answer this you would need to use this equation: A = πr² (See explanation)
Step-by-step explanation:
So, The circumference of the circle is 65n?
What you need to do is A = πr²
Let's divide 65n by Pi (65/3.14)
That equals 20.70n
Now we have the diameter of the circle. We need the radius for A = πr² .
We need to divide the diameter by two (20.70/2)
We now have the radius of the circle: 10.35n
Now we need to plug 10.35n in our Area equation :A = π10.35²
So now we multiply the Radius by Pi (π * 10.35)
This means that the area of our circle is: A = 32.49
Your answer Is 32.49n
Jeff and George each have a box of popcorn. How much more popcorn does the bigger box hold than the smaller box?
Answer:
there in not enough information in your question to get an answer
Answer:
Part 1: Jeff Part 2: 130
Step-by-step explanation:
Shawn buys 15 shirts for a total of $60. Express this as an equation using 'X' as the cost of each shirt.
Answer:
15x = 60
Step-by-step explanation:
Hi,
We know he bought 15 shirts for an x amount of dollars, so 15 times however much they cost is 15x and the total is 60.
hope this helps :)
The weight distribution of a vehicle specifies that the front wheels carry 51% of the weight. If a certain vehicle weighs 3930 lb, what weight is carried by the front
wheels?
Answer: 2004.3
Step-by-step explanation: 51% of 3930 is 2004.3
If f (x) = 5(2-3x), what is the value of f(-4)?
Millie has 15 counters. Sam has 8 counters. Write a sentence comparing how many counters each child has.
Answer:
Millie has 15 counters, and Sam has 8.
Step-by-step explanation:
s
could u please help or give me the answer
Answer:
the answer is option B
Step-by-step explanation:
1) f(x) = 3*
f(x)
x
-1
0
1
2 3
1)f(×)=3*=f(×)=×-1 0 1=0.23
As a small step to save the environment, Luna came up with an idea for her sweet shop. In exchange for five eclaire boxes, that she gets, she decided to give an eclaire box for free. A group of kids from the locality ate seventy-seven eclaire boxes that week and they collected the boxes to give to Luna and get back eclaires boxes.
How many eclaires boxes do you think they can buy from Luna using the seventy-seven claire boxes?
Answer: Kids will get 15 eclaire boxes in the exchange of 76 boxes.
Step-by-step explanation:
Exchange criteria:
1 Ecalaire box free for 5 eclaire boxes.
Total boxes collected by kids =76
Number of eclaire boxes they will get = 76 ÷5
= [tex]15\dfrac{1}{5}[/tex] or 15 (approx.)
i.e. they will get 15 eclaire boxes in the exchange of 76 boxes.
In a given amount of time, Jamie drove four times as far as Rhonda. Altogether they drove 125 miles. Find the number of miles driven by each.
Answer:
25
Step-by-step explanation:
Theres a ratio of 1:4
Where Jamie has driven 4 times as much as Rhonda
meaning that you can plug in values, 1:4=125
the 4 represents Jamie since she drove farther than rhonda
Rhonda drove 25 miles, and Jamie drove 100 miles
25(4)+25=124
PLEASE HELP ME ILL MARK BRAINLIEST
In terms of t, what is the volume of the sphere?
A)
360 cubic feet
B)
180071 cubic feet
27000 cubic feet
D)
36000 cubic feet
Answer:
The answer is not listed but here it is 113040
Step-by-step explanation:
What is 100*10+1000*33/100
Answer:
Your answer will be 1,330 I hope this helps
Answer:
my answer is (100+3300=3400
On a number line, what is the distance between -8 and -2?
Answer:
6 units
Step-by-step explanation:
Distance between two points on the number lines, the difference between the absolute values.
I-8 I - I - 2I = 8 - 2 = 6
The key to finding the distance between two points is to remember that the geometric definition of subtraction is the distance between the two numbers as long as we subtract the smaller number from the larger.
Solution⇛(-8) - (-2)
⇛8 - 2
⇛6
Solve for the unknown in the following diagram. Round the answer to two decimal places.
degrees
Answer:
x = 63.28°
Step-by-step explanation:
A = 33°
a = 175 mm
C = x
c = 287 mm
Use the Law of Sines to find x
Thus:
[tex] \frac{a}{sin(A)} = \frac{c}{sin(C)} [/tex]
Plug in the values
[tex] \frac{175}{sin(33)} = \frac{287}{sin(x)} [/tex]
Cross multiply
[tex] 175*sin(x) = 287*sin(33) [/tex]
Divide both sides by 175
[tex] sin(x) = \frac{287*sin(33)}{175} [/tex]
[tex] sin(x) = 0.893208017 [/tex]
[tex] x = sin^{-1}(0.893208017) [/tex]
x = 63.28° (2 decimal places)
If you buy a burger and fries at your favorite fast food restaurant:___________
A. then GDP will be higher, but consumption spending will be unchanged.
B. then both GDP and consumption spending will be higher.
C. then neither GDP nor consumption will be affected because you would have eaten at home had you not bought the meal at the restaurant.
D. then GDP will be unchanged, but consumption spending will be higher.
Answer:
A. then GDP will be higher, but consumption spending will be unchanged.
Step-by-step explanation:
GDP is the monetary value of all the finished goods and services produced within a country in a specific time period by the country's citizens and foreigners.
It is primarily used to assess the health of a country's economy and it is calculated by adding the following figures together:
personal consumption private investment government spending; and exports
The burger and fries are services provided by the restaurant, which added value to the economy by increasing the GDP.
However, the consumption spending will not be affected because you would have eaten at home had you not bought the meal at the restaurant.
Therefore, the correct option is A " then GDP will be higher, but consumption spending will be unchanged".
PLEASE HELP ME THIS IS A TEST PROBLEM I NEED HELP 100 POINTS AND BRAINLELST
Answer:
C
Step-by-step explanation: