Answer:
The value of the test statistic is [tex]t = -1.01[/tex]
The pvalue of the test is of 0.1617 > 0.025, which means that there is no evidence at the 0.025 level that the technique reduces the training time.
Step-by-step explanation:
Using traditional methods it takes 11.4 hours to receive a basic flying license. Is there evidence at the 0.025 level that the technique reduces the training time?
This means that at the null hypothesis, we test that the mean is of 11.4 hours, that is:
[tex]H_0: \mu = 11.4[/tex]
At the alternate hypothesis, we test that the mean is less than this, that is:
[tex]H_a: \mu < 11.4[/tex]
The test statistic is:
[tex]t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}[/tex]
In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, [tex]s[/tex] is the standard deviation and n is the size of the sample.
11.4 is tested at the null hypothesis:
This means that [tex]\mu = 11.4[/tex]
A researcher used the technique on 23 students and observed that they had a mean of 11.0 hours with a variance of 3.61.
This means that [tex]n = 23, X = 11, s = \sqrt{3.61} = 1.9[/tex]
Value of the test-statistic:
[tex]t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}[/tex]
[tex]t = \frac{11 - 11.4}{\frac{1.9}{\sqrt{23}}}[/tex]
[tex]t = -1.01[/tex]
Pvalue of the test and decision:
The pvalue of the test is the probability of finding a sample mean of 11 hours or less, which is the pvalue of t = -1.01 with 23 - 1 = 22 degrees of freedom.
Using a calculator, this pvalue is of 0.1617.
The pvalue of the test is of 0.1617 > 0.025, which means that there is no evidence at the 0.025 level that the technique reduces the training time.
Help me with this question i’ll give you all five stars
Answer:
A) upper point is (-5,5) the lower point is (1,-2)
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B) distance is 8
Step-by-step explanation:
List the following from least to greatest: 3, -4, 0, 1, -9
Answer:
Step-by-step explanation:
-9,-4,0,1,3
Answer: From least to greatest. = -9, -4, 0, 1, 3.
5 equivalent fractions of 4/8
Answer:
2/4 1/2 5/10 6/12 10/20
Step-by-step explanation:
just pick an even denominator and take half of that number for the numerator. This only works because the most basic form of 4/8 is 1/2. This method only works if your selected fraction is equivalent to 1/2.
please answer all 4 questions and in examples
Answer:
1) 600
2) 2460
3) 216
4) 360
if this is wrong please tell me so I can’t edit this and tell you the correct answer
If eight is added to four times a number the result is 96
Answer:
12
Step-by-step explanation:
- 1/2 + (3/4 × 4/9) Please help me solve
there is your answer :))))
Please help!
What percentage of students scored between 70 and 90?image^
Answer:
50%
Step-by-step explanation:
50% of the data, in theory, resides between the first and third quartiles
What is the volume of a sphere with a radius
of 6?
A 721
14471
2161
IN 288rt
Answer:
the volume is 904.32. that guy I don't know what
A 721
14471
IN 288rt
means
Guys can you help me please :( ASAP
Answer:
The answer is 25 + 11
Step-by-step explanation:
Hope this helps
Find the circumference of the circle, when the raduis is 7?
Answer:
43.9823
Step-by-step explanation:
2 times pi times the radius
PLS HELP WITH THESE TWO QUESTIONS PLSSS
NO LINKS
Answer:
B for the first one
C for the second one
Step-by-step explanation:
i know probability
Express in the form 1:n
Give n as a fully simplified fraction.
4:6
Answer:
1:1.5
Step-by-step explanation:
Divide both numbers by 4 to get 1:1.5
I need really please
Answer:
be loving
Step-by-step explanation:
If figure f is rotated 180 degrees and dilated by a factor of 1/2 which new figure could be produced
John always wears a shirt, pants, socks, and shoes. He owns 121212 pairs of socks, 333 pairs of shoes, 555 pairs of pants, and 555 shirts.
How many different outfits can John make?
Answer:
12 * 3 * 5 * 5 = 900
Step-by-step explanation:
Answer:
900
Step-by-step explanation:
If 70 was removed from the set of data, which values would change?
70, 75, 80, 80, 80, 95, 100
Orange and median
O range only
O mean only
O mean and range
What is the degree of the polynomial function P(x)=3x4-7x2-2x7-x+4
Answer: Hello Luv......
The degree is the largest exponent on the variable.
7
Step-by-step explanation:
Hope this helps!
Mark me brainest please.
Anna ♥
7 is the degree of the given polynomial P(x)=3x⁴-7x²-2x⁷-x+4
What is Polynomial?Polynomial is an expression consisting of indeterminates and coefficients, that involves only the operations of addition, subtraction, multiplication, and positive-integer powers of variables.
The given polynomial is P(x)=3x⁴-7x²-2x⁷-x+4
Three time of x to the power of four minus seven times of x square minus two times of x power seven minus x plus four.
A polynomial's degree is the highest or the greatest power of a variable in a polynomial equation.
In the given polynomial the x variable has 7 as the highest power.
So 7 is the degree of the given polynomial
Hence 7 is the degree of the given polynomial P(x)=3x⁴-7x²-2x⁷-x+4
To learn more on Polynomials click:
https://brainly.com/question/11536910
#SPJ2
HELP ME THIS IS SO MANY POINTS AND I WILL GIVE BRAINLIEST!!!
Answer: (b)
Step-by-step explanation:
Given
[tex]f(x)=x^2[/tex]
Now, [tex]f(x)[/tex] is transformed to [tex]g(x)[/tex]
and [tex]g(x)[/tex] is obtained by replacing [tex]x[/tex] with [tex]\frac{x}{2}[/tex] in [tex]f(x)[/tex]
[tex]\therefore g(x)=\left(\dfrac{x}{2}\right)^2\\\\g(x)=\dfrac{x^2}{4}[/tex]
Plot [tex]f(x)[/tex] and [tex]g(x)[/tex] and it can be observed that domain, range, and vertex is same for both the function.
[tex]f(x)[/tex] is narrower compared to [tex]g(x)[/tex]. Therefore, option (b) puts up the invalid reasoning. Hence option (b) is not a true statement.
‼️‼️‼️‼️‼️‼️
PLEASE HELP
FIRST ANSWER GETS BRAINLIEST
NO LINK NO LINKS OR BANNED
A store is having a 25% off sale on all shirts. Show TWO different ways to calculate the sale price for a shirt that normally costs $24.00
Answer:
Find 10% Then half it to find 5%. Times what 10% is by 2 and then add the 5%. Or find out what goes into 24 4 times as it's 25% off and 25 goes into 100 4 times.
Step-by-step explanation:
2527=3
3214=8
1249=4
7321=?
A)7 B)3 C)9
Answer:
c) 9
Step-by-step explanation:
7321=9
What is the range of the data Colin collected?
Answer:
5
Step-by-step explanation:
There is a 3/4 mile walking trail in city park. Starting at the 1/12 mile and counting until the end of the trail there are distance markers every 1/12 mile. How many distances markers are there?
Answer: 9
Step-by-step explanation: Convert 3/4 into 9/12. Then you see there are 9 markers.
Lilah bought a sweater that was on sale for half off. The regular price of the sweater was $35.98. If Lilah had to pay $1.45 in sales tax, how much
did she spend on the sweater?
Answer:
23.71
Step-by-step explanation:
I hope this was helpful!
PLS DUE RN
WILL GIVE
BRAINLIST
Answer:
44 in.
Step-by-step explanation:
3 ft 8 in.
1 ft = 12 in.
3 ft = 36 in.
36 in. 8 in.
44 in.
A state in the United States has 193,116 residents living in 22 countries.
[tex]\frac{1}{y} :\frac{22}{193,116}[/tex]
y · 22 = 1 · 193,116
22y = 193,116
22y ÷ 22 = 193,116 ÷ 22
y = 8778
The rate is 8778.
olve the system of linear equations by graphing. =3+3 - 2x - 3
Answer:
If the equation is actually typed like that the answer will be
3-2x
If is typed like this 3-2x-3+3=
It will be
-2x+3
Find the greatest common factor of 18, 36,18,36,18, comma, 36, comma and 454545.
plzz answer its due by 11.00
If a plate is moving 3.3 cm/yr, what distance [in kilometers (km)] will the plate move in 1 million years?
[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}[/tex]
33 km3.3cm = 0.000033km (divide by 100,000.
So, 0.000033km/yr.
0.000033 × 1,000,000
=33km
Thanks Hope it helpssolve each inequality. Then graph the solution.
Answer:
The first one is an open circle at -2 going right.
The second one is a closed circle at -2 going left.
The third one an open circle at -1.5 going left.
Step-by-step explanation:
I hope the helped :)
Answer:
Uh i have no idea
Step-by-step explanation:
True or False
Two major composers of minimalism include Steve Reich and John Cage.
A. true
B. false
Sorry for the wrong subject
Answer:
false
Step-by-step explanation:
:)))))))))))))))))