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
Diano4ka-milaya [45]
3 years ago
8

Dairy cows at large commercial farms often receive injections of bST (Bovine Somatotropin), a hormone used to spur milk producti

on. Bauman et al. (Journal of Dairy Science, 1989) reported that 12 cows given bST produced an average of 28.0 kg/d of milk. Assume that the standart deviation of milk production is 2.25 kg/d. (a) Find a 99% confidence interval for the true mean milk production. Round your answers to two decimal places (e.g. 98.76).
Mathematics
1 answer:
Dmitrij [34]3 years ago
6 0

Answer:

The 99% confidence interval for the true mean milk production is between 26.33 kg/d and 29.67 kg/d.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.99}{2} = 0.005

Now, we have to find z in the Z-table as such z has a p-value of 1 - \alpha.

That is z with a pvalue of 1 - 0.005 = 0.995, so Z = 2.575.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 2.575\frac{2.25}{\sqrt{12}} = 1.67

The lower end of the interval is the sample mean subtracted by M. So it is 28 - 1.67 = 26.33 kg/d.

The upper end of the interval is the sample mean added to M. So it is 28 + 1.67 = 29.67 kg/d.

The 99% confidence interval for the true mean milk production is between 26.33 kg/d and 29.67 kg/d.

You might be interested in
Multipy the expreshions (2h+2.7) (2h-27)​
Musya8 [376]

Answer:

4h^2-48.6h-72.9

Step-by-step explanation:

(2h+2.7) (2h-27)\\4h^2-54h+5.4h-72.9\\4h^2-48.6h-72.9

5 0
3 years ago
Caleb throws a ball three times for his dog Leo. For each throw, Leo either
Debora [2.8K]
The one that makes the most sense is C
6 0
3 years ago
Read 2 more answers
Which formula gives the area of a rectangle?
Tpy6a [65]

Answer:

L*W=Area

Step-by-step explanation:

The formula Length x Width = Area is the correct formula for the area of a rectangle. The same formula works for a square!

6 0
3 years ago
Read 2 more answers
A recipe for apple pie calls for 1.2 kilograms of apples. If the average apple has a mass of 200 grams, how many apples should b
lutik1710 [3]

Answer:

6Apples

Step-by-step explanation:

Number of apples required for the recipe  = 1.2kilograms

But we know that 1000g  = 1kg

So;

       1.2 kg will give:

             1.2  x 1000 = 1200kg

Average mass of the apple  = 200g

So;

  The number of apples used  = \frac{1200}{200}  = 6Apples

5 0
3 years ago
In a certain Algebra 2 class of 20 students, 12 of them play basketball and 13 of them play baseball. There are 3 students who p
boyakko [2]

Answer:

85%

Step-by-step explanation:

1.  Divide 100 by the maximum amount of students to get the percent value for every student (5% per student)

2. Subtract the number of students you know plays neither sport, leaving you with 17 students.

3. Multiply the remaining students by the percent percent value. 17 * 5 = 85%

(This takes into account that some students are playing both sports.)

6 0
3 years ago
Other questions:
  • Kate sets a goal to walk 3 miles every day for a year. How many miles more or less than 1000 miles will she walk in the year
    14·1 answer
  • A painter is asked to paint the exterior of a dome, excluding the bottom, which has a diameter of 9 ft. The painter already has
    8·1 answer
  • Niko uses 12 marshmallows and 8 graham crackers to make 4 s'mores.
    14·2 answers
  • Plot the points (2,5 )and (2,-7)
    6·2 answers
  • Lisa is cooking muffins. The recipe calls for 7 cups of sugar. She has already put in 5 cups. How much more cups does she need t
    9·1 answer
  • 3) Complete the square and write the following in Vertex Form.<br> x2 - 8x + 12
    6·1 answer
  • Kim was walking down a rocky path.For 4 minutes, the elevation dropped steadily.All together it dropped 8 feet. What was the cha
    13·1 answer
  • What is the equation in slope intercept form?
    7·1 answer
  • CAN ANYONE PLEASE HELP ME OR ATLEAST TAKE A GUESS​
    14·1 answer
  • Help me with this please
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!