Answer:
0.86
Step-by-step explanation:
Alpha level in study ( ∝ )= 0.05
In the field ( r ) = 0.35
power of study = 0.9
Determine the Probability of been real
1 - 0.14
= 1 - 0.14 = 0.86
The opposite of a probability been real is the Probability of been unreal
Does (3,8) make the Equation y=x-5 true?
Answer:
no
Step-by-step explanation:
Henry started an assignment at 4:13 PM and finished it at 5:41 PM.
How long did it take him? Give your answer in minutes.
Note: Enter your answer and show all the steps that you use to solve this problem Find the area. The figure is not drawn to scale
Answer:
area=13.8cm^2
Step-by-step explanation:
To much????????????????
Answer:
That's ain't enough
I love you
Answer:
NO MORE
Step-by-step explanation:
i love you to
Degree and Radian Measures
Convert the given radian measures to a degree measure.
2 /pi (π)
a. 360°
b. -360°
c. -180°
d. 180°
Pleases select the best answer from the choices provided
Answer:
A. 360°
Step-by-step explanation:
I calculated it logically
Jeremy was saving $8 per week.
How many weeks would it take him to save $124?
set n as the value of weeks jeremey needs to save
so jeremy needs to save 8n = 128
so n =[tex]\frac{128}{8}[/tex] = 16 weeks
Learn with an example
Isaac earns $16 for each hour of babysitting. How many hours in all will it take Isaac to
earn a total of $32?
Answer:
It would take 2 hours for Isaac to earn $32
Step-by-step explanation:
16*2=32
5. Penny and her family went out to eat at a local
restaurant. Three of them ordered a fried shrimp
basket, but her daughter Meghan ordered a basket
of chicken tenders, which was $4.95 less than the
shrimp basket. If the total order before tax was
$46.85, what was the price of a shrimp basket?
Answer: $13.45
Step-by-step explanation:
1. 48.85 + 4.95 = 53.8
2. 53.8/4 = 13.45
3. Shrimp basket = $13.45
A $120.00 pair of shoes at your nearby department store is marked up 4% and then is offered at 45% off. If sales tax is 13%, what is the total amount of tax that must be paid for this pair of shoes?
i need answer ASAP
Answer:
$26
Step-by-step explanation:
0.8(X - 3) = 18.4
X - 3 = 23
X = 26
Jamie practices singing for 45 minutes every day. Which equation represents the relationship between the total number of minutes (t ) and the number of days (d ) Jamie has practiced?
Answer:
t = 45d
Step-by-step explanation:
Number of days = d
Number of minutes = t
Number of minutes per day = 45 minutes
Total number of minutes of practice after d number of days will be :
t = number of minutes per days * Number of days
t = 45 * d
t = 45d
est scores for a statistics class had a mean of 79 with a standard deviation of 4.5. Test scores for a calculus class had a mean of 69 with a standard deviation of 3.7. Suppose a student gets a 84 on the statistics test and a 96 on the calculus test. Calculate the z-score for each test. On which test did the student perform better relative to the other students in each class
Answer:
The z-score for the statistics test grade is of 1.11.
The z-score for the calculus test grade is 7.3.
Due to the higher z-score, the student performed better on the calculus test relative to the other students in each class
Step-by-step explanation:
Z-score:
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
In this question:
The grade with the higher z-score is better relative to the other students in each class.
Statistics:
Mean of 79 and standard deviation of 4.5, so [tex]\mu = 79, \sigma = 4.5[/tex]
Student got 84, so [tex]X = 84[/tex]
The z-score is:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{84 - 79}{4.5}[/tex]
[tex]Z = 1.11[/tex]
The z-score for the statistics test grade is of 1.11.
Calculus:
Mean of 69, standard deviation of 3.7, so [tex]\mu = 69, \sigma = 3.7[/tex]
Student got 96, so [tex]X = 96[/tex]
The z-score is:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{96 - 69}{3.7}[/tex]
[tex]Z = 7.3[/tex]
The z-score for the calculus test grade is 7.3.
On which test did the student perform better relative to the other students in each class?
Due to the higher z-score, the student performed better on the calculus test relative to the other students in each class
A cognitive psychologist believes that a particular drug improves short-term memory. An experiment is conducted in which 8 randomly selected participants are given the drug and then given a short time to memorize a list of 10 words. Participants are then tested for retention 15 minutes after the memorization period. The number of words correctly recalled by each participant is as follows: 8, 9, 10, 6, 8, 7, 9, 7.
Over the past few years, the psychologist has collected a lot of data using this task with similar subjects. Although he has lost the original data, he remembers that the mean was 6 words correctly recalled and that the data were normally distributed.
Required:
a. On the basis of these data, what can we conclude about the effect of the drug on short-term memory? Use α = 0.05.
b. Determine the size of the effect.
Answer:
We can conclude that there is significant evidence that the drug improves short term memory.
Step-by-step explanation:
Given the sample data : 8, 9, 10, 6, 8, 7, 9, 7.
The sample mean, xbar = Σx / n
Sample standard deviation :
√Σ(x - xbar)²/ n-1)
Xbar = 8
Sample size, n = 8
Standard deviation, s = 1.31
H0 : μ = 6
H0 : μ > 6
The test statistic :
(xbar - μ) ÷ (s/√(n))
(8 - 6) / (1.31 / √8)
2 /0.4631549
Test statistic = 4.318
Decision region :
Reject H0 ; if Pvalue < α
α = 0.05
Pvalue from Tscore calculator :
df = n - 1 ; 8 - 1 =7
Pvalue(4.318, 7) = 0.001744
Pvalue < α ; We reject H0 ; and conclude that there is significant evidence that the drug improves short term memory.
20. Given circle C with radius r and circle D with radius
s, what is an appropriate first step when proving
circle C is similar to circle D?
O A. Transform circle C with a dilation that has center
Cand scale factors.
B. Transform circle C with a dilation that has center
C and scale factor r.
O C. Transform circle C with the translation that maps
point Conto point D.
OD. Transform circle C with the translation that maps
point onto point C.
Answer:
A. Transform circle C with a dilation that has center C and scale factor s.
Step-by-step explanation:
Given
Circle C
[tex]radius = r[/tex]
Circle D
[tex]radius = s[/tex]
Required
Map C to D
From the question, we can assume that:
[tex]r \ne s[/tex]
This implies that options c and d are false because when an object is translated from one point to another, the size of the object remains unchanged.
To map C onto D,
1) C has to be dilated from its own center C
2) The scale of dilation will be equal to the radius of D (i.e. s)
Hence, (A) is correct
Answer:
It's C
Transform circle C with the translation that maps point Conto point D.
An hour before show time, only 266 people are seated for a movie. . According to ticket sales, 93% of the people have yet to arrive. How many tickets were sold for the movie
Answer:
3800 tickets
Step-by-step explanation:
we are given that,
total people seated:266
yet to come:93%
so the percentage of people who have arrived is 100%-93%=7%
and one ticket for each people
therefore,
[tex] \displaystyle \begin{array}{ccc} \displaystyle \rm7\% \quad \text{People} \implies266 \: \text{tickets} \\ \displaystyle100 \%\: \quad \imath \imath \implies \frac{266}{7\%} \: \: \: \: \imath \imath \\ \\ \qquad \displaystyle \qquad\rm as \: \% = \frac{1}{100} \longleftarrow \frac{266}{ \dfrac{7}{100} } \\ \\ \displaystyle \rm \: by \: simplifying \: complex \: fraction\longleftarrow 266 \times \frac{100}{7} \\ \rm reduce \: fraction \longleftarrow 38 \times 100 \\ \rm simplify \:multiplication \longleftarrow3800\end{array}[/tex]
hence,
3800 tickets were sold for the movie
Answer:
Solutions given:
[100%-97%]=266people
7% =266people
Each people is 1 ticket.
266 people =266tickets
so
7% of people=266ticket
100% of people =266/7×100=3800tickets
3800tickets were sold for the movie
use a flowchart to prove if the triangles in each pair are congruent. NO LINKS!!!!
9514 1404 393
Answer:
see attached
Step-by-step explanation:
It isn't clear what is supposed to go in the various blanks. We have elected to identify the corresponding congruent parts, and name the congruent triangles. The postulate supporting the conclusion is also shown.
In most cases, corresponding parts are marked congruent. The exception is the vertical angles in figure 22.
the answer is x=4 4(2×8)
Liam has 60 seeds and 12 plastic cups, and will plant the same number of seeds in each cup. Whicl equation shows the number of seeds in each cup? es 4 60 - 5 도 A 1260 5-12
Answer:
Number of seeds in each cup = 5 seeds in each cup
Step-by-step explanation:
Given:
Total number of seeds Liam has = 60 seed
Total number of plastics cup = 12 cups
Find:
Number of seeds in each cup
Computation:
Number of seeds in each cup = Total number of seeds Liam has / Total number of plastics cup
Number of seeds in each cup = 60 / 12
Number of seeds in each cup = 5 seeds in each cup
• What is the difference? Complete the equation.
–30 – (-10) =
?
HELP ME PLEASEEEEEEEEEEEEEEEEEEE
Answer:
the last one :)
Step-by-step explanation:
Pwease help i will give you brain thing if its correct ♡
Answer:
1. 54 = 0.6x
2. 90 dollars (see below)
Step-by-step explanation:
54 = 0.6x
0.6 is the decimal equivalent of 60%
Divide both sides by 0.6:
54/0.6 = 0.6x/0.6
90 = x
PLease Help help Help
Answer:
98.1 square units
Step-by-step explanation:
know you need it quick
what is the area of the object above
I need help with this
Answer:
65*
Step-by-step explanation:
All angles in a triangle = 180 degrees.
if f(x)=5x-1, then f^-1(x)=
Answer:
F⁻¹(x) = [tex]\frac{1}{5} x +1[/tex]
Step-by-step explanation:
Inverse of 5 would be 1/5, and
Inverse of -1 would be +1
Hope this helps!
Answer:
-6
Step-by-step explanation:
if f(x)=-1
then you plug -1 into the equation then you get 5(-1)-1
then multiply 5 and -1 and get -5
so now youre left with -5-1
-5-1= -6
Tessellations
Rotate the parallelogram 180° clockwise about point Q.
Please select the best answer from the choices provided
Answer:
D.
Step-by-step explanation:
I calculated it logically
Help Give brainliest quickly
Answer:
I think the answer is forth one
study the figure what is the measure of angle x?
Answer:
E.128°
Step-by-step explanation:
180°-33°-19°=128°
Solve for x
x ^2 +3x−4=0
Answer:
= 1
= − 4
Step-by-step explanation:
Answer:
The solution set is {-4, 1}.
Step-by-step explanation:
x^2 + 3x − 4 = 0
(x + 4)(x - 1) = 0
x = -4, 1.
22/33 = a/24 sovle the proportion
HELP PLEASE I WILL MARK BRAINLIEST!
Answer:
x = 35
y = 100
Step-by-step explanation:
∠AEB and ∠DEC are vertical angles because they are opposite each other; they are also equal because of this. We can write an equation to model the situation:
∠AEB = ∠DEC
50° = x° + 15°
x = 35
∠AEB and ∠AED are supplementary because the form a line; this means they add up to 180°
∠AEB + ∠AED = 180°
50° + y + 30° = 180°
y + 80° = 180°
y = 100
A searchlight is shaped like a paraboloid of revolution. If the light source is located 4 feet from the base along the axis of symmetry and the opening is 20 feet across, how deep should the searchlight be?
Answer:
The searchlight should be 6.25ft deep
Step-by-step explanation:
Given
[tex]Across = 20ft[/tex]
[tex]Base = 4ft[/tex]
Required
The depth of the searchlight
[tex]Across = 20ft[/tex] implies that the search light span 10 units to either side of the x-axis
[tex]Base = 4ft[/tex] implies that the search light span 4 units to the y-axis
The attached image illustrates the revolution.
From the attached image, the endpoints of the searchlight is:
[tex](x,y) = \{(-10,4), (10,4)\}[/tex]
The depth (a) of the search light is calculated using:
[tex]x^2 = 4ay[/tex]
Make a the subject
[tex]a = \frac{x^2}{4y}[/tex]
Substitute -10 or 10 for x and 4 for y
[tex]a = \frac{(-10)^2}{4*4}[/tex]
[tex]a = \frac{100}{16}[/tex]
[tex]a = 6.25ft[/tex]