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Related Questions
Some researchers have conjectured that stem-pitting disease in peach-tree seedlings might be controlled with weed and soil treatment. An experiment is conducted to compare peach-tree seedling growth when the soil and weeds are treated with one of two herbicides. In a field containing 20 seedlings, 10 are randomly selected throughout the field and assigned to receive herbicide A. The remainder of the seedlings is assigned to receive herbicide B. Soil and weeds for each seedling are treated with the appropriate herbicide, and at the end of the study period, the height in centimeters is recorded for each seedling. The following results are obtained: Herbicide A = 94.5 cm s1 = 10 cm Herbicide B = 109.1 cm s2 = 9 cm
Required:
1. What is a 90% confidence interval (use the conservative value for the degrees of freedom) for μ2 – μ1? a. 14.6 ± 7.00 b. 14.6 ± 7.38 c. 14.6 ± 7.80 d. 14.6 ± 9.62
2. Suppose we wish to determine if there tends to be a difference in height for the seedlings treated with the different herbicides. To answer this question, we decide to test the hypotheses H0: μ2 – μ1 = 0, Ha: μ2 – μ1 ≠0. What is the value of the two-sample t statistic?
a. 14.6
b. 3.43
c. 2.54
d. 7.80
3. What can we say about the value of the P-value?
a. P-value < 0.01
b. 0.01 < P-value < 0.05
c. 0.05 < P-value < 0.10
d. P-value > 0.10
4. If you use the 0.05 level of significance, what conclusion would you reach?
a. The evidence is not sufficiently strong to reject the null hypothesis.
b. There is sufficient evidence to reject the null hypothesis.
c. Cannot be determined by the information given.
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Answer:
1. b. 14.6 ± 7.38
2. b. 3.43
3. b. 0.01 < P-value < 0.05
4. b. There is sufficient evidence to reject the null hypothesis.
Step-by-step explanation:
The hypothesis test is used to test the null hypothesis against the alternative hypothesis. The p value of the test determines whether to accept or reject the null hypothesis. In the given scenario the p value is less than 0.05 so there is sufficient evidence against the null hypothesis in favor of alternative hypothesis.
PLEASE HELP THANK YOU !!!!!!!
Answers
Answer:
Pretty sure c is your correct answer :)
Step-by-step explanation:
I hope this helps :)
i'll give brainliest
reflect (-4,4) in the x-axis
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Answer:
(-4,-4)
Step-by-step explanation:
Anytime you reflect a coordinate point across the x-axis, the y-coordinate becomes its opposite and the x-coordinate stays the same.
In this coordinate: (-4,4)
Reflecting (-4,4) across the x-axis means the x-coordinate (-4) would stay the same and the y-coordinate (4) would become its opposite (-4).
The new coordinates after being reflected across the x-axis are (-4,-4).
2. 48 degrees 17 x
(solve for x. round to the nearest tenth)
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Answer:
67
Step-by-step explanation:
you divide the 48/17 yo get 67
Help with number two please:)
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Well 6x3=18
So 5x3=15
A surveyor is measuring the distance across a small lake. He has set up his transit on one side of the lake 130 feet from a piling that is directly across from a pier on the other side of the lake. From his transit, the angle between the piling and the pier is 60°. What is the distance between the piling and the pier to the nearest foot?
Answers
Answer:
x = 225.16 feet
Step-by-step explanation:
Given that,
The angle between the piling and the pier is 60°.
A surveyor has set up his transit on one side of the lake 130 feet from a piling that is directly across from a pier on the other side of the lake.
We need to find the distance between the piling and the pier. Let the distance be d. Using the trigonometry to find it as follows :
[tex]\tan(60)=\dfrac{x}{130}\\\\x=\tan(60)\times 130\\\\x=225.16\ feet[/tex]
So, the required distance is 225.16 feet.
Which of the following expressions could be used to find the area of the larger rectangle?
12 mm
4 mm
48 mm
16 mm
3164 mm2
9(64 mm
9(32 mm)
3(576 mm2
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Answer:
12mm since its supposed to be for larger rectangles
Step-by-step explanation:
Help please question in the picture
Answers
Answer:
lol no picture attach it please
Step-by-step explanation:
plsssssssssssssssss help
Answers
Answer:
x = 7
Step-by-step explanation:
Find the point on the graph that has the y-value of 8. Determine its x-value.
14^-3 x 14^12
positive exponents
Answers
Answer:
20661046784
Step-by-step explanation:
I couldn't get the pos exponent but hopefully this helps
Brainliest for correct answer
Answers
Answer:
A
Step-by-step explanation:
Find the value. Show step by step. 0.5 x 0.5 x 0.5=
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Answer:
0.125
Explanation:
0.5 x 0.5 x 0.5 = 0.125
[tex] \sqrt[3]{4( \sqrt[3]{6 + \sqrt[3]{10)} } } [/tex]
Answers
Answer: 77824
Step-by-step explanation:
PLEASE HELP ME FAST, I ASKED THIS ALREADY AND ALL I GOT WAS ONE OF THOSE SCAM LINKS :( IF YOU GIVE AN EXPLANATION I CAN GIVE YOU BRAINLIEST!
Two angle measures in a triangle are 47° and 43°. What type of triangle is it?
Also, I just wanted to say that I can only give brainliest if two people answer. Thank you!
Answers
Answer:
Right triangle
Step-by-step explanation:
Answer:
Right triangle
Step-by-step explanation:
To find the third angle, we add the two known angles.
47 + 43 = 90
The sum of all the angles of a triangle is always 180.
Therefore, we subtract 90 from 180 to find the third, unknown angle.
180 - 90 = 90
Because 90 degrees is the third angle, and 90 degrees is a right angle, this is a right triangle.
What is the area of this shape?
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Answer:
720
Step-by-step explanation:
From Question 10c, What is DC_{3,1}DC
3,1
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DC₃₁ is the entry of the product DC in row 3, column 1, which you get by computing the dot product of the 3rd row of D and the 1st column of C :
{3, -2} • {1, 4} = 3×1 + (-2)×4 = 3 - 8 = -5
Using a graphical method, solve the quadratic equation:
-X2 - 2x + 3 = 0
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2-2x+3=0
5-2x=0
-5 -5
-2x=-5
/-2 /-2
x=2.5
---
hope it helps
sorry if I'm wrong
the X confused me
To find the quotient of 4.082 and 10,000, move the decimal point in 4.082
Choose...
places to the
Choose...
.
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Answer: 2 places to the right
Step-by-step explanation:
If i'm wrong sorry hope it helps
Select all the fractions that are equivalent to 4/5. Use the area models to help.
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Answer:
8/10 and 12/15
Step-by-step explanation:
The first area model shows that 4 of the 5 blocks are filled.
The second area model shows that 8 of the 10 blocks are filled.
The third area model shows that 12 of the 15 blocks are filled.
Twelve people were surveyed and asked how many people live in their residence. The results are summarized in the table below.
What is the mean number of people per residence? Round to one decimal place if needed.
2.0 people per residence
2.5 people per residence
2.8 people per residence
3.5 people per residence
URGENT PLEASE HELP!
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The mean number of people is 2.8 per residence . Which is the correct answer would be an option (C)
What is arithmetic mean?Arithmetic mean is defined as the ratio of the sum of observations to the total number of observations. It can be referred to as the average of a specific set of data or the arithmetic mean. One of the basic methods used to acquire a result, the term "Mean" is commonly used in the field of statistics.
The formula for the mean of a given set of data is as follows:
Mean = Sum of Observations/Total number of observations
Given the frequency distribution as :
People per residence (x) Frequency (f) fx
1 2 1 × 2 = 2
2 4 2 × 4 = 8
3 3 3 × 3 = 9
4 1 4 × 1 = 4
5 1 5 × 1 = 5
6 1 6 × 1 = 6
Summation of fx = (Σfx) = 2 + 8 + 9 + 4 + 5 + 6 = 34
Total frequency = (Σf) = 2 + 4 + 3 + 1 + 1 + 1 = 12
⇒ Mean = Σfx/Σf
⇒ 34/ 12
⇒ 2.83 ≈ 2.8
Thus, the mean of the frequency distribution is 2.8.
Learn more about the arithmetic means here:
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Answer c
Step-by-step explanation:
Solve for 0 Round your answer to the nearest tenth.
20
13
A =
degrees
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Answer:
1.835
Step-by-step explanation:
use pythagoras theorem to find missing side
use sin to find missing angle
missing side/13 = 1.835
me ayudan por favor?
solo son 10 preguntas abc
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Answer:
hi
Step-by-step explanation:
you roll a number cube numbered from 1 to 6. What id the probability that the number is a 3
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Answer:
1 / 6
Step-by-step explanation:
S = { 1, 2, 3, 4, 5, 6 }
n ( S ) = 6
Let A be the event of getting the number " 3 ".
A = { 3 }
n ( A ) = 1
P ( A ) = n ( A ) / n ( S )
P ( A ) = 1 / 6
Therefore,
the probability that the number 3 is 1 / 6.
I need the answer, help me please
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Y = 3/2x + 1
The slope is 3/2, opposite sign = -3/2 now reciprocal = -2/3
Y = -2/3x + b
Plug in the point (6,-2)
-2 = -2/3(6) + b
-2 = -12/3 + b
-2 = -4 + b, b =2
Solution: y = -2/3x + 2
Substitute y for 0
multiply both sides of the equation by 2
Move the variable to the left-hand side and change its sign
Divide both sides of the equation by -3
Solve x + 19 = 47.
Select one:
x = 893
x = 66
x = 28
x = 18
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the answer is 28 hoped that helped
Answer:
x=28 (B)
Step-by-step explanation:
x = 28 (B)
You need to subtract 19 from both sides to get 28.
What is the difference between Independent and Dependent events?
A. In Dependent - each event relies on the event before it.
B. They are the same - independent just means more events are occurring.
C. I. independent - each event relies on the event before it.
D. They are the same - dependent just means more events are occurring.
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Answer:
C is the answer
Step-by-step explanation:
I took the test and got it right
Please help quickly: Thanks!
4 1/4 x 2 x 6 = ?
4 1/4 x 2 x 6 x 3/4 = ?
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Answer for the 2nd one: 38 1/4
Help me explanation
Answers
Answer:
number 2 - x=50, y =69
Step-by-step explanation:
Angles in a polygon of a pentagon add up to 540
so 180 +125+98+98 = 429
540 - 429 = 111
now you do x = 50 so
2 times 50 which is 100
then plus 11 which is 111
Which triangles are similar to triangle ABC ?
Answers
Answer:
both of em
Step-by-step explanation:
3. Given: AE is a tangent of OO
m/FAE = 85
m AB= 40
m BC= 16
m CD= 10
m212=55
mZGAK = 75
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Given: AE is a tangent to circle OO, m/FAE = 85, m AB = 40, m BC = 16, m CD = 10, m 212 = 55, m ZGAK = 75.What is required to be found out?We need to find mEGAP. So, mEGAP = 230/2 = 115.
Solution:According to the Theorem, "If a line is drawn tangent to a circle at the endpoint of a diameter, then the angle formed by the line and the diameter is a right angle."Therefore, the diameter would be OO.Now, we need to find the value of m EGA.From the angle of the segment, we know that a circle is 360 degrees and that an arc is equal to the angle subtended by it.
If 212° = 55°, then arc AKB = 360° - 212° = 148°.
Similarly, we can calculate arc GAC = 360° - 75° = 285°.So, arc AKC = arc AKB + arc GAC = 148° + 285° = 433°.As arcs AKC and KGD are opposite, they are equal.
Therefore, arc KGD = 433°.It is given that the length of arc KGD is 40+16+10 = 66. Therefore, the length of the entire circle is 433/360 x 66 = 80.02.
Most importantly, the value of m EGA is 360° - 75° - 55° = 230°.Therefore, m EGAP = 230/2 = 115.Answer: m EGAP = 115.
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