Answer:
Answer is simple:
Step-by-step explanation:
Solve this: The mean height of coastal redwood trees is known to be 200 feet. In order to test whether a community of coastal trees were growing to be healthy in a park with high rates of tourism, a random sample of 20 trees were measured. It was found that for the 20 sampled trees, the average height was 197.5 feet with a standard deviation of 6.7. It is known that tree heights follow a normal distribution
The mean height of coastal redwood trees is known to be 200 feet. In order to test whether a community of coastal trees were growing to be healthy in a park with high rates of tourism, a random sample of 20 trees were measured. It was found that for the 20 sampled trees, the average height was 197.5 feet. It is known that tree heights follow a normal distribution with a standard deviation of 7.
Which of the following is correct:
In the first scenario, the standard deviation is calculated from the sample, therefore a z-test should be used.
DUH
Answer:
i think that it is a because there lest
Step-by-step explanation:
Answer:
6.8
Step-by-step
the 8 in 6.83 is the tenth place and since 3 is under 5 you round down and you get 6.8
So, from this information you can set up two equations:
0.1x + 0.25y = 5 dollars and
x + y = 41 coins
where x = how many dimes and y = how many quarters
Solve for either x or y in the second equation, so x = 41 - y and then plug this in for x in the first equation to get:
0.1(41 - y) + 0.25y = 5
4.1 - 0.1y + 0.25y = 5
4.1 + 0.15y = 5
0.15y = 0.9
y = 6
We solved for y and now we know there are 6 quarters, so you can plug this into the second equation to solve for x. We fine that we have 35 dimes. You can always your work by plugging what you get for x and y back into the equations.
Answer:
Part A: The slope is 40
Part B:
Equation of the line in point-slope form is y — 720 = 40×(x — 3)
Equation of the line in slope-intercept form is g(x) = 40x + 600
Equation of the line in standard form is 40x-y + 600 = 0.
Step-by-step explanation:
Sorry this is all i have done ive been looking for answers and this is all i can find.
