Marian Abelt tests video games.She earns $8.125 per hour.Last week she worked 35.50 hours.What was her straight-time pay?

Kendra reads in Modern Dog Magazine that the average age of dogs currently alive is 4.8 years. To determine if this finding appl

SOVA2 [1]

Answer:

The true statement about Kendra's sample is:

b) Kendra's samples are precise but not accurate.

Step-by-step explanation:

a) Data and Calculations:

Average age of dogs currently alive = 4.8 years

Average ages of dogs in Kendra's sample

Week Average Age (in years)

1 3.7

2 3.8

3 4.2

4 4.1

5 3.9

6 3.9

7 4.0

Total 27.6

Mean = 3.9 (27.6/7)

b) Accuracy refers to how close Kendra's sample mean age of dogs is to the average age value as stated in the Modern Dog Magazine. While the Magazine stated an average age of 4.8 years, Kendra's sample produced a mean of 3.9 years. On the other hand, precision refers to how close Kendra's sample measurements are to each other. With a mean of 3.9 years, the sample measurements are very close to each other. Therefore, we can conclude that "Kendra's samples are precise but not accurate."

5 0

2 years ago

I don't really understand how to do this if you could help please help asap, thank you

neonofarm [45]

Answer:

C

Step-by-step explanation:

Just use elimination strategy

5 0

2 years ago

Marbles marked 1 to 14 are placed in a bag. Nestor randomly chooses a marble from the bag. What is the probability that the marb

algol13

Answer:

asdfasdfasdfaasdf

f hi me ji ajkdsl;f jewiopag wheuip gjhishgfuidshifokh sal fhlasdk f

5 0

2 years ago

F+4/g=6 Solve for F

Svet_ta [14]

$\dfrac{f+4}{g}=6\ \ \ \ |multiply\ both\ sides\ by\ g\\\\f+4=6g\ \ \ \ |subtract\ 4\ from\ both\ sides\\\\\boxed{f=6g-4}$

5 0

3 years ago

A farmer finds that if she plants 85 trees per acre, each tree will yield 80 bushels of fruit. She estimates that for each addit

vova2212 [387]

Answer:

52 Trees

Step-by-step explanation:

If she plants 85 trees per acre, each tree will yield 80 bushels of fruit.

Yield = 85 X 80

Let x be the additional tree planted per acre.

For each additional tree planted per acre, the yield of each tree will decrease by 4 bushels.

Therefore, the yield:

$F(x)=(85+x)(80-4x)\\F(x)=6800-260x-4x^2$

Next, we maximize F(x) by taking its derivatives and solving for its critical point.

$F'(x)=-260-8x\\$Setting $F'(x)=0,$ we have:$\\-260-8x=0\\8x=-260\\$Divide both sides by 8$\\x=-32.5$

$F''(x)=-8, $therefore we have a maximum$

It is apparent that she currently has too many trees per acre. To get a maximum harvest, she needs to reduce the number of trees by approximately 32.5 trees.

Therefore, number of trees per acre she should plant:

85+(-32.5)

=85-32.5

=52.5 Trees

Since the number of trees can only be an integer and it cannot be greater than 52.5, the number of trees to be planted per acre to maximize her harvest is 52.

5 0

3 years ago