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:
500
Step-by-step explanation:
please give BRAINLIEST
Answer: The correct answer is 50 inches
Answer:
your answer is 11
Step-by-step explanation:
An exponential has the base at the bottom
Algebraic expressions are expressions that use numbers and variables
The value of x is 35
<h3>How to determine the value of x</h3>
The expression is given as:
Add 4 to both sides of the equation
Multiply both sides by 6
Divide both sides by 2
Subtract 7 from both sides
Hence, the value of x is 35
Read more about expressions at:
brainly.com/question/4344214