Answer:
212800
Step-by-step explanation:
B. 16=n*32; 50%
Step by step explanation:
16 divide 32= 1/2
1/2*100= 50
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.
You have to figure out how many spaces you have to move it ->. You move it right 6 times in order to get 3.45. so your answer would be 3.45 • 10^6. To check your answer, divide 3.45 / 10^6. Which is 0.00000345. :)
19: 1, 19
21: 1, 3, 7, 21
23: 1, 23
25: 1, 5, 25