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
valkas [14]
2 years ago
14

Suppose that a travel bureau claims that the trees in a forest are 83 feet tall on average, With a standard deviation of 2 feet

if you took a sample of 64 trees, which of the following mean heights would be outside the 95% confidence interval
Mathematics
1 answer:
valentinak56 [21]2 years ago
6 0

Answer:

Step-by-step explanation:

Given mean = 84,

Standard deviation = 2,

Sample 64,  

95% confidence interval: z = 1.96

Applying empirical rule , means that 95% of data fall within two standard deviations.

ME =  = 0.49

Rounding this to 0.5

CI =  83.5< mean < 84.5

Outside of this range=  x ≤ 83.5  and ≥  84.5

You might be interested in
Marc spent 1 4 of his monthly budget on food and 3 5 of his monthly budget on gasoline. The total amount he spent on food and ga
bearhunter [10]
Food = 1/4
gasoline = 3/5 
Total = 1/4 + 3/5 = 17/20

17/20 = 272
1/20 = 272 ÷ 17 = 16
20/20 = 16 x 20 = $320
4 0
3 years ago
Please help immediately ​
Burka [1]

Answer:    f'(1)=\dfrac{4}{2y+1}

<u>Step-by-step explanation:</u>

To find the tangent, you need to find the derivative with respect to x.

Then substitute x = 1 into the derivative.

Given:         0 = 2x² - xy - y²

Derivative:  0 = 4x - y' - 2yy'

Solve for y': 2yy' + y' = 4x

                   y'(2y + 1) = 4x

                   y'=\dfrac{4x}{2y+1}

\text{Substitute x = 1:}\quad y'(1)=\dfrac{4}{2y+1}

8 0
2 years ago
Which of the following numbers could be the sides of a right triangle. A)8,15,17. B)6,8,12 C)9,11,21 D)4,13,16
ArbitrLikvidat [17]

Answer:

A) 8, 15, 17.

Step-by-step explanation:

Right triangle obey the Pythagorean theorem. Thus, we choose the two smaller numbers (being the cathetus) and if after applying the P. Theorem we get the biggest of each option  (the hypotenuse) that means that those numbers could be the sides of a right triangle.

The Pythagorean theorem states that: a^2+b^2=c^2

Thus:

\sqrt{a^2+b^2}=c

Option A:

\sqrt{8^2+15^2}=17 → 17 = 17 OK!

Option B:

\sqrt{6^2+8^2}  = 10 → 10 ≠ 12 NO

Option C:

\sqrt{9^2+11^2} = [tex]\sqrt{202}[/tex] → \sqrt{202} ≠ 21 NO

Option D:

\sqrt{4^2+13^2} = \sqrt{185} → \sqrt{185} ≠ 16 NO

3 0
3 years ago
In the early months of some​ year, one site added 0.5 million new accounts every day. At this​ rate, how many days would be need
Over [174]
The answer that you are looking for is 60 . It will take 60 days until there will be 30 million new accounts added to a site. If you divide 30 from .5 you would get 60 so that would be your answer

8 0
3 years ago
Read 2 more answers
I need to find out this questions but I don't know how to do it
Fiesta28 [93]
Number 8? I don't know which one you are talking about.
7 0
3 years ago
Other questions:
  • How much paper is used for the label on the can of peas? Round your answer to the nearest tenth of a square inch.
    6·1 answer
  • ANSWER SHEET
    13·1 answer
  • Consider the data summary above. After five
    12·2 answers
  • This year Benny is 12 years old his brother Lenny's age is 175% of his age how old is Lenny
    15·1 answer
  • Spencer picked 85 pears. Gwen picked p fewer pears than Spencer. Write an expression that shows how many pears Gwen picked.
    5·1 answer
  • How do you know if two lines are parallel?
    8·2 answers
  • 3) Find the area of the composite solid. Round your answer to the<br> nearest whole number.
    9·1 answer
  • Hi if someone can answer the top one I’ll mark u brainliest thanks
    13·2 answers
  • Can someone make a real world problem out of this graph please?​
    12·1 answer
  • Question 1 :
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!