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
aleksley [76]
2 years ago
6

In a sample of eight whitefish caught in Yellowknife Bay, the mean arsenic concentration in the liver was 0.32 mg/kg, with a sta

ndard deviation of 0.06 mg/kg. Find a 95% confidence interval for the concentration in whitefish found in Yellowknife Bay. (Round the final answers to four decimal places.)
Mathematics
1 answer:
Advocard [28]2 years ago
8 0

Answer:

The 95% confidence interval for the concentration in whitefish found in Yellowknife Bay is (0.2698 mg/kg, 0.3702 mg/kg).

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 8 - 1 = 7

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 7 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.3246

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2.3646\frac{0.06}{\sqrt{8}} = 0.0502

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 0.32 - 0.0502 = 0.2698 mg/kg

The upper end of the interval is the sample mean added to M. So it is 0.32 + 0.0502 = 0.3702 mg/kg

The 95% confidence interval for the concentration in whitefish found in Yellowknife Bay is (0.2698 mg/kg, 0.3702 mg/kg).

You might be interested in
Find the slope pls...
Sidana [21]

Answer:

C is the answer

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
△QRS is rotated about point P to △Q′R′S′ .
Sedbober [7]

Answer:

As Given △QRS is rotated about point P to △Q′R′S′ .

As we know after rotation by any angle of pre-image neither the shape nor size of the image changes, the image after rotation is congruent to pre image.

Out of the options given

→The corresponding lengths, from the point of rotation, between the pre-image and the image are preserved.

→The corresponding angle measurements in each triangle between the pre-image and the image are preserved.

are true.



4 0
3 years ago
Jennifer went to purchase soda for a birthday party. She wants to order one liter of Coca
ladessa [460]

Answer:

I think t•2.25•5 correct me if I'm wrong

3 0
2 years ago
What do you know to be true about the values of a and b?
algol [13]

but how can we determine if there is no pic

3 0
2 years ago
127.5 is what percent of 51?
poizon [28]
Multiply 1.275 with 51 to get the answer (65.025)
8 0
3 years ago
Other questions:
  • I will give brainliest and offer good points (01.04 MC<br> )Solve 4 ⋅ (−6).
    6·2 answers
  • one of the heaviest ranfalls recorded in greentown in a 24-hour period was 178.8 centimeters. If the ranfall was constant, how m
    7·1 answer
  • For the data set below, which of the following is true?<br> 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
    11·1 answer
  • Question 14 (5 points)
    13·1 answer
  • There were x cookies at the beginning of a party. By the end of the party, 16 of them had been eaten. Using x, write an expressi
    10·1 answer
  • I WILL MARK THE BRAINEST
    11·1 answer
  • Choose all the functions that are NOT linear.
    10·1 answer
  • How i can answer this question
    13·1 answer
  • Express 100,000 as a power of 10
    11·1 answer
  • What should be done to solve the following equation?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!