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2 years ago

Please do this NOOWWWW

Mathematics

2 answers:

Fofino [41]2 years ago

8 0

Answer:

1. x>3

2. x≤−48

3. x<−3

4. x > $99.39

5. She will pay more than $99.39 per night

6. w≥200

Step-by-step explanation:

each picture is in order

shepuryov [24]2 years ago

5 0

1. x>3

2. x≤−48

3. x<−3

4. x > $99.39

5. She will pay more than $99.39 per night

6. w≥200 is th correct answer

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Solve using substitutions! Help w this question please!!

Irina18 [472]

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2 years ago

Jamal worked over summer at his dads office. He earned $2200 total. He is planning on spending his money on a $50 per month gym

Tju [1.3M]

Answer: He will have $1974 in April.

Step-by-step explanation:

Given : Total money he earned = $2200

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2 years ago

Find that sale price: jeans $85.99 at a 15% discount

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Felipe is ordering new carpet for his bedroom floor. (The floor is represented in the picture below as rectangle JKLM). He knows

svetlana [45]

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Step-by-step explanation:

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2 years ago

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).

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2 years ago