1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ankoles [38]
3 years ago
9

Some researchers have conjectured that stem-pitting disease in peach tree seedlings might be controlled with weed and soil treat

ment. An experiment was conducted to compare peach tree seedling growth with soil and weeds treated with one of the two herbicides. In a field containing 10 seedlings, five were randomly selected throughout the field and assigned to receive Herbicide A. The remainder was to receive Herbicide B. Soil and weeds for each seedling were treated with the appropriate herbicide, and, at the end of the study period, the height (cm) was recorded for each seedling. The following results were obtained: Herbicide A 87, 80, 80, 76, 73 Herbicide B 78, 77, 74, 68, 62 A 90% confidence interval for the difference in mean heights for the two herbicides is (0.2, 14.6). Which of the following statements is correct? The P-value for a test of the null hypothesis of equal means and the alternative of different means would be greater than 10% because the interval doesn't include 0. Neither of those statements is correct. A 95% confidence interval could not include 0, because we would be even more confident of a difference in the groups.
Mathematics
1 answer:
Murljashka [212]3 years ago
8 0

Answer:

The first choice

Step-by-step explanation:

The choice of "The P-value for a test of the null hypothesis of equal means and the alternative of different means would be greater than 10% because the interval doesn't include 0" is the correct choice because the lower bound of the confidence interval is 0.2.  

Since we are looking at an interval based on the difference of heights, we are 95% sure the lowest difference is 0.2, or 20%.  Choosing  10% as a test value for a hypothesis test is a good value to choose since it's lower than the lowest bound of the confidence interval

You might be interested in
Which two points satisfy y=-x2(^)+2x+4 and x+y=4?
Wewaii [24]
Use subtitution method to solve the problem.

First, change y to the value of x in order to find the exact value of x.
x + y = 4
y = 4 - x

Second, subtitute y with 4 - x from the first equation
y = -x² + 2x + 4
4 - x = -x² + 2x + 4
move all terms to the left side
x² - 2x - x + 4 - 4 = 0
x² - 3x = 0
x(x - 3) = 0
x = 0 or x = 3

Third, now we have 2 values of x. Find the value of y for each of x
For x = 0
y = 4 - x
y = 4 - 0
y = 4

For x = 3
y = 4 - x
y = 4 - 3
y = 1

The solution is (0,4) and (3,1). The answer is option b
5 0
3 years ago
James bought the computer which was discounted from $350 to $273. What is the discount rate?
sasho [114]
<h3>Answer:  22%</h3>

Explanation:

amount saved = 350-273 = 77 dollars.

Divide this amount over the original price

77/350 = 0.22 = 22% is the discount rate

8 0
2 years ago
Read 2 more answers
What is the product? 3x^5(2x^2+4+1)
const2013 [10]

Answer:

6x^{7} +15x^{5}

Step-by-step explanation:

3x^{5}(2x^{2} +4+1)

Multiply 3x^{5} by each term in the parentheses.

6x^{7} + 12x^{5} +3x^{5}

Now, all you have to do is simplify.

6x^{7} +15x^{5}

5 0
3 years ago
(Literal equations) The formula for the volume of a cylinder is V = πr^2h. Solve V = πr^2h for h, the height of the cylinder. A.
Kobotan [32]

Answer:

C

Step-by-step explanation:

Given

V = πr²h

Isolate h by dividing both sides by πr²

\frac{V}{\pi r^2} = h → C

8 0
3 years ago
What is 2 1/6 plus 3 and 1/4
Alex777 [14]
5 5/12

(2+3) 1/6 + 1/4=

5 5/12
5 0
3 years ago
Other questions:
  • Bulan rows on a crew team. her team rows their boat at a split rate of 2min/500m
    9·1 answer
  • Solve the equation. Check your work. (please show work)<br><br><br><br> 5(2-y)+y=-6
    14·1 answer
  • The drama club is selling tickets to their play to raise money for the show's expenses. Each student ticket sells for $8 and eac
    9·2 answers
  • HELP!! Help!! HELP!!
    14·1 answer
  • Ralph opened a savings acount with a deposit of $100. Every month after that he deposits $20 more. Why is the relationship descr
    5·2 answers
  • X+4 over 6x=1divided by x
    6·1 answer
  • What is the solution (x,y) to the system of equations below? 3x+4y=-23 2y-x=-19
    6·1 answer
  • The coordinates below represent a triangle that was dilated. J(-3, -12) à J’(-2, -8) K(-6, -15) à K’(-4, -10) L(-9, -12) à L’(-6
    14·1 answer
  • In the diagram, the measure of angle 6 is 98 degrees. <br><br> what is the measure of angle 7?
    10·1 answer
  • will give brainliest! pls help and give a quick summary for each.. i am learning trig but i really don't understand anything
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!