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
zheka24 [161]
3 years ago
5

"You measure 34 dogs' weights, and find they have a mean weight of 67 ounces. Assume the population standard deviation is 13.5 o

unces. Based on this, construct a 95% confidence interval for the true population mean dog weight."
Mathematics
1 answer:
liraira [26]3 years ago
7 0

Answer:

The 95% confidence interval for the true population mean dog weight is between 62.46 ounces and 71.54 ounces.

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{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, find 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 = 1.96*\frac{13.5}{\sqrt{34}} = 4.54

The lower end of the interval is the sample mean subtracted by M. So it is 67 - 4.54 = 62.46 ounches.

The upper end of the interval is the sample mean added to M. So it is 67 + 4.54 = 71.54 ounces.

The 95% confidence interval for the true population mean dog weight is between 62.46 ounces and 71.54 ounces.

You might be interested in
Find the volume of the square pyramid, given its slant height​
Reptile [31]

Answer:

Step-by-step explanation:

base length b = 32 cm

slant height L = 30 cm

 

height h = √(L²-(½b)²)

= √(30²-0.25·32²)

≅ 25.3771550809 cm

 

volume V = (⅓)b²h

= (⅓)32²·25.38

≅ 8662.07 cm³

7 0
2 years ago
Do any of you guys know this please i need helppp!!
Fudgin [204]
The third one
5/6 is the answer
7 0
2 years ago
Read 2 more answers
Someone plz help because I am using my last amount of points and I don't want it to be wasted from no answer.I need help with qu
ser-zykov [4K]
Wheres the questions???
7 0
3 years ago
Which number is an irrational number?Help Plzzzzz​
Aleonysh [2.5K]

The square root of 15 is irrational.

6 0
3 years ago
Read 2 more answers
Reagan jars 6 liters of jam every day. How much jam did Reagan jar if she spent 3 days making jam?
Andrei [34K]
She spent 18 liters of jam!
5 0
3 years ago
Other questions:
  • M + m = 36<br><br> I need help to show the work please
    8·2 answers
  • Which of the following is not a triangle congruence theorem?<br> A. ASA<br> B. AAS<br> C. SSA
    13·1 answer
  • i have a test tomorrow about writing ratios in different ways i'm not sure how to tho. How do u do that????????!!!!HELP!!!!!
    11·2 answers
  • A prism is dilated by a factor of 1.5. How many times larger is the volume of the resulting prism than the volume of the origina
    5·2 answers
  • Find the domain of y = 2x + 1
    7·1 answer
  • 15 % of 100 is what<br> number?
    5·1 answer
  • What is the geometric mean for 6 and 18.
    14·2 answers
  • PLEASE HELP!! <br> Solve for m<br> m+7=3+m+4
    6·1 answer
  • The table shows how the number of pepperoni
    13·1 answer
  • Find the missing side​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!