Answer:
$56,000
Step-by-step explanation
The mean is the average so add all of the numbers together and divide by how many numbers there are.
30000+40000+40000+80000+90000=280,000
280,000/5 = 56,000
Answer:
(i) The student who weighed the rock 20 times.
Step-by-step explanation:
The margin of error of a confidence interval is:
In which z is related to the confidence level, is the standard deviation of the population and n is the size of the sample.
From the equation above, the larger the size of the sample, the lower the margin is, that is, the narrower the interval is.
In this question:
A student weighed the rock 20 times and other the 5. From above, the one who weighed the rock 20 times will have the more precise interval.
So the correct answer is:
(i) The student who weighed the rock 20 times.
Answer:
subtract all the sided angles given and then subtact it y 360 degrees this way you can find x hope it helps
Step-by-step explanation:
Answer:
its 96 hope this helps!
Step-by-step explanation:
it's 96 because 128-(128/8)=96
Hello! I would love to help!
In order to figure out the answer, we have to add up all the students that take 2 or more language classes, then divide it by the total number of students. Let's start!
Okay we know that:
12 in Spanish and French
7 Spanish and German
9 French and German
3 in All
Okay. Those are all the students that are taking 2 or more language classes. Now, let's add them all.
12+7+9+3=31
So 31 out of 93 kids take more than one language class. But, we still have to figure out the probability of choosing one of these kids randomly. Let's divide 31 and 93
31/93=0.333
I personally know 0.333 is equal to 1/3.
So, your answer for this question is 1/3!!
Hope this helped! Comment i you have any questions!