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
Pavlova-9 [17]
3 years ago
10

As part of a study of the treatment of anemia in cattle, researchers measured the concentration of selenium in the blood of 36 c

ows who had been given a dietary supplement of selenium (2 mg/day) for one year. The cows were all the same breed and had all borne their first calf during the year. The mean selenium concentration was 6.21 μg/dl and the standard deviation was 1.84 μg/dl.16 Construct a 95% confidence interval for the population mean.
Mathematics
1 answer:
iris [78.8K]3 years ago
4 0

Answer:

Step-by-step explanation:

Given that a  part of a study of the treatment of anemia in cattle, researchers measured the concentration of selenium in the blood of 36 cows who had been given a dietary supplement of selenium (2 mg/day) for one year.

If x is the selenium concentration then

X has mean= 6.21 mg/dl

and std dev = 1.84

Sample size n = 36

std error of sample = \frac{1.84}{\sqrt{36} } \\=0.307

Margin of error for 95%

1.96(0.307)=0.602

Confidence interval = (6.21-0.605, 6.21+0.605)\\= (5.605, 6.815)

You might be interested in
Kesha it’s plain to rent a van for a trip to Mt.rainier two of her friends each went to the same type of van from the same car r
Lelechka [254]

Answer:

a

Step-by-step explanation:

8 0
3 years ago
3x+1+5x=7+15+7x what is x?
LenKa [72]

Answer: x=21

Step-by-step explanation:

To solve for x you must first combine you like terms on each side of the equal sign. So you problem will become 8x+1=22+7x. Then get your x on one side and your numbers on the other by taking the one away from the right side and 1 away from 22. Then take away 7 from the left side to cancel it out. Then take 7x away from 8x to leave you with x. making your answer x=21

3 0
3 years ago
Read 2 more answers
Louise, Tammy, Delores, and Sheryl score 78 points total in the tennis matches they play. They score a consecutive number of poi
irga5000 [103]

\huge\boxed{18\ \text{points}}

We'll represent Louise's, Tammy's, Delores's, and Sheryl's point values with x, x+1, x+2, and x+3 respectively since each one is 1 point more than the last.

Add all of these values up and set it all equal to 78.

x+x+1+x+2+x+3=78

Now, simplify.

4x+6=78

Subtract 6 on both sides.

\begin{aligned}4x+6-6&=78-6\\4x&=72\end{aligned}

Divide both sides by 4.

\begin{aligned}\frac{4x}{4}&=\frac{72}{4}\\x&=\boxed{18}\end{aligned}

Since Louise's score is x, the answer is 18.

<h3>Double-checking</h3>

To verify our answer, add the point totals 18, 19, 20, and 21.

This equals 78, so we can be sure the answer is correct.

5 0
2 years ago
a team of runners need to run a 1/4 mile relay, if each runner must run 1/16 mile,,how many runners will be needed.
kirza4 [7]
4 runners are needed to do the race
8 0
3 years ago
Read 2 more answers
The graphs below have the same shape. what is the equation of the red graph?
Komok [63]

Answer:

b

Step-by-step explanation

4 0
3 years ago
Other questions:
  • Here are a bucket load of points(and brainliest) for a bucket load of help. SO PLEASE HELP.
    5·1 answer
  • A room in a hotel cost $129.00 per night. the tax is 14%. how much you pay for the room per night?
    15·1 answer
  • 22
    10·1 answer
  • Which of the following is not equal to 3/8? A-0.125 B-0.375 C- 6/16 D-0.3750
    13·2 answers
  • Help please pronto!!! Please ignore my handwriting and the lighting!!!
    10·1 answer
  • The water level of a certain lake is at 35 feet. Due to recent storms, the water level is rising at a rate of 3 inches per day.
    15·1 answer
  • 37x + 1/2 - ( x + 1/4 ) = 9(4x-7)+5
    5·1 answer
  • I
    9·1 answer
  • 216 miles in 5 hours how much miles per hour
    15·2 answers
  • Plz help i need help on math plz help frist one get bainys
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!