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
Elza [17]
2 years ago
15

A random sample of 9 fields of corn has a mean yield of 34.7 bushels per acre and standard deviation of 8.04 bushels per acre. D

etermine the 98% confidence interval for the true mean yield. Assume the population is approximately normal. Step 1 of 2 : Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
Mathematics
1 answer:
kykrilka [37]2 years ago
6 0

Answer:

98% Confidence interval:  (26.939,42.461)

Step-by-step explanation:

We are given the following in the question:

Sample mean, \bar{x} = 34.7 bushels per acre

Sample size, n = 9

Alpha, α = 0.05

Sample standard deviation, s = 8.04 bushels per acre

Degree of freedom = n - 1 = 8

98% Confidence interval:

\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Putting the values, we get,  

34.7 \pm 2.896(\dfrac{8.04}{\sqrt{9}} )\\\\ = 34.7 \pm 7.761 = (26.939,42.461)  

is the required confidence interval for the true mean yield.

You might be interested in
Which value is equivalent to
Ksenya-84 [330]

Answer:

\frac{25}{144}

Step-by-step explanation:

(\frac{7 * 5 * 2}{7 * 3} )^2 * (\frac{5^0}{2^-3})^3 * 2^{-9}

Simplified becomes;

(\frac{10}{3})^2 * 2^3 * \frac{1}{2^9}

Simplifying further gives; \frac{25}{144}

6 0
3 years ago
Find the length s of the arc of a circle of radius 20 miles subtended by the central angle 33º
AysviL [449]
Arc length is figured by the following formula theta/360 x 2pi(r) input the knowns 30/360x2pi(20)=11.52 miles
6 0
3 years ago
Write an absolute value inequality that has 3 and -5 as two of its solutions
tino4ka555 [31]
Absolute value makes all things inside positive (make result positive)
so one example is
|x+1|=4
so if you had 3 in it woul dyhave
|3+1|=4
|4|=4
4=4
true

if -5
|-5+1|=4
|-4|=4
4=4
treu
8 0
2 years ago
Solve using the quadratic formula. Select the correct solution.<br> -7x=2x^2+9
gayaneshka [121]

The answer to your question is B!

Have a wonderful day.

7 0
3 years ago
Which number completes the square? x2 − 20x + _____?
OverLord2011 [107]
100, because, x^2 - 20x + 100 = ( x - 10 )^2;
4 0
3 years ago
Other questions:
  • Let f(x)=t^2. What is f(t-4)?
    10·1 answer
  • Which inequality is equivalent to \-41 &lt;9?
    10·1 answer
  • On June 8, 1992, a crop circle with an 18-meter radius was found in a wheat field near Szekesfehervar, 43 miles southwest of Bud
    15·1 answer
  • Why are rates usually written as a unit rate
    13·1 answer
  • Measure Of Angle T. WILL GIVE BRAINLIEST
    10·1 answer
  • Write L if it is Likely to happen and Write U if it is unlikely to happen. Topic is probability
    11·1 answer
  • Identify the domain of the function shown in the graph.
    11·1 answer
  • Determine whether or not the triangle with the given side lengths is a right triangle.
    10·1 answer
  • (-6-4) divided by (-5)
    12·2 answers
  • Pls help!! What is the equation for the line in slope-intercept form​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!