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3 years ago

There are 12 students in the gym class. If 4 students can sit on 1 bench, how

Mathematics

2 answers:

Trava [24]3 years ago

8 0

You must do 12 divided by 4

grigory [225]3 years ago

5 0

Answer:

3 benches

Step-by-step explanation:

12/3=4

12 students / 3 benches = 4 the amount students that can sit on one bench

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Weight of a rock: In a geology course, students are learning to use a balance scale to accurately weigh rocks. One student plans

statuscvo [17]

Answer:

The student who weighted the rock 5 times has a 95% confidence interval of (25.2, 29.1) which is guaranteed to be more wider (less precise) than the other student who weighted the rock 20 times.

Step-by-step explanation:

What is Confidence Interval?

The confidence interval represents an interval that we can guarantee that the target variable will be within this interval for a given confidence level.

The confidence interval is given by

$CI = \bar{x} + t_{\alpha/2}(\frac{\sigma}{\sqrt{n} } ) \\$

Where $\bar{x}$ is the mean weight $\sigma$ is the standard deviation $t_{\alpha/2}$ is the critical value from t-table and n is the sample size.

The term $t_{\alpha/2}(\frac{\sigma}{\sqrt{n} } )$ is known as margin of error.

As the sample size is decreased the corresponding margin of error increases which results in wider confidence interval which means smaller precision.

The student who weighted the rock 5 times has a 95% confidence interval of (25.2, 29.1) which is guaranteed to be more wider (less precise) than the other student who weighted the rock 20 times.

We can say with 95% confidence that the true mean weight of the rock is within the interval of (25.2, 29.1).

7 0

2 years ago

Item 5 Use the axis of symmetry to find the reflection of each point. The reflection of (−3,−3) ( − 3 , − 3 ) is (, ). The refle

GenaCL600 [577]

Answer:

dddddddddddddddddddddddd

Step-by-step explanation:

ssssssssssss

4 0

2 years ago

100x+2y =1 and also 100x -2y=1 what is the value of y ?

solmaris [256]

Yeah bro just take the 2 and subtract on both side so the y is left alone flip the 100 so now its 001 divide it by 1 and the answer is 007 like the spy.

4 0

2 years ago

Is the number 144 rational or irrational?

Gelneren [198K]

The number 144 is rational because it can be expressed by 144/1

7 0

3 years ago

Read 2 more answers

What’s is the square root of 22

Travka [436]

Answer:

4.69041575982343

Step-by-step explanation:

round if you need to

8 0

2 years ago