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
jarptica [38.1K]
3 years ago
15

Relative density was determined for one sample of second-growth Douglas fir 2 x 3 4s with a low percentage of juvenile wood and

another sample with a moderate percentage of juvenile wood, resulting in the following data
Type n x s
Low 35 0.523 0.0543
Moderate 54 0.489 0.0450

Estimate the difference between true average density for the two types of wood.
Mathematics
1 answer:
Citrus2011 [14]3 years ago
5 0

Answer:

0.03865

Step-by-step explanation:

Since the true density for the two types of trees are given, we would evaluate the average for both of them

Low percentage of juvenile wood density = 0.523 and 0.0543

Average density = 0.523 + 0.0543/2

Average density = 0.55015

Moderate percentage of juvenile wood density = 0.489 and 0.0450

Average density = 0.489 + 0.0450/2

Average density = 0.5115

Therefore, difference in true average density for the two woods are = 0.55015 - 0.51150

= 0.03865

You might be interested in
Worth 12 points and actually help me with the question plz
KATRIN_1 [288]

Answer:

(x + 1, y - 3)

Step-by-step explanation:

The translation is 1 unit right and 3 units down.

7 0
3 years ago
Marcus bought he used 50% on tickets on rides and 1/4 of the tickets on video games and the rest of the tickets in the batting c
GalinKa [24]

Answer:

Therefore Marcus is incorrect.

Step-by-step explanation:

Total ticket that Marcus bought= 100%.

Marcus used 50% of ticket on rides.

and he used  \frac{1}{4} of the tickets on the video games.

The percentage form of any number x is

=100\times x \%

The percentage form of \frac{1}{4} is

=\frac{1\times  100}{4} \%

=25%

Therefore rest tickets are

=Total ticket-( ticket used in rides + ticket used in video games)

=100% - (50%+25%)

=100% - 75%

=25%

Therefore he used 25% of tickets in batting cage.

But he said that Marcus said that he used 24% of ticket in batting cage.

Therefore Marcus is incorrect.

8 0
3 years ago
A cake recipe says to bake the cake until the center is 180 degrees F, then let the cake cool to 110 degrees F. The table shows
jeka94

Answer:

Check the explanation

Step-by-step explanation:

a) The following exponential model would fit the given dataset : \small y = 129.122 \times (0.9742)^x

b) To cool down to 110 degrees, it would take approximately 7.3 minutes based on the above model.

4 0
3 years ago
If x=3 then solve the equation: y=10x×10x-7×-12
NNADVOKAT [17]
The answer is y = 545. 
7 0
3 years ago
Read 2 more answers
determine which sequence is an arithmatic sequence. a. -10, 5, - 5/2, 5/4,... b. 1/5, 1/7, 1/9, 1/11, ... c. 3,6, 12, 24,... d.
Damm [24]

Answer:

d

Step-by-step explanation:

An arithmetic sequence has a common difference between its terms. The only sequence with a common difference is choice d, which has a common difference of -4. The other options have common ratios, making them geometric, not arithmetic, sequences.

5 0
3 years ago
Other questions:
  • MATH HELP! Answer questions right and you will get brainliest and five stars!
    6·2 answers
  • A universal set contains only sets A and B. If A∩B = Ø and A and B are not the empty set, then all of the following are true exc
    6·2 answers
  • The total surface area of a cube is 294 cm ² work out the volume of the cube
    13·2 answers
  • PLEASE HELP<br> 1/4 is to 1 1/4 as 2 is to b
    8·1 answer
  • Identify the pair of angles.
    10·1 answer
  • Which number produces an irrational number when multiplied by 0.4?
    15·2 answers
  • A survey was conducted by an independent price checking company to check an advertiser's claim that it had lower prices than its
    9·1 answer
  • Solve the equation.<br> 8 (2-6v) +19=-61
    12·2 answers
  • Which of the following is true about the line that passes through the points (-5, 8) and (1,8
    9·1 answer
  • By selling a watch to Rahim, Ravi gainee Rs 50. Apurva bought the same watch from Rahim who sold at a loss of Rs 20. If Apurva p
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!