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11111nata11111 [884]
3 years ago
8

A children's ride at an amusement park has a rule that a person must be shorter than 4 feet tall to ride it.

Mathematics
1 answer:
Juliette [100K]3 years ago
8 0

Answer:

Step-by-step explanation:

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A simple random sample of items resulted in a sample mean of . The population standard deviation is . a. Compute the confidence
damaskus [11]

Answer:

Following are the solution to this question

Step-by-step explanation:

Please find the complete question in the attached file.

In point a:

a=0.05 \\\\| Z(0.025)|= 1.96  \text{(check in normal table)} \\\\ 95 \% \  CI \\\\\bar x  \pm  \ Z \times \frac{s}{\sqrt{n}}\\\\\to 80 \pm  1.96 \times \frac{15}{\sqrt{60}} \\\\\to (76.20448, 83.79552)

In point b:

95 \%  \ CI \ is \\\\ \bar x  \pm  Z \times \frac{s}{\sqrt{n}}\\\\\to  80 \pm 1.96 \times \frac {15}{\sqrt{120}}\\\\\to (77.31616,  82.68384)

In point c:

A large sample is a smaller error margin.

8 0
3 years ago
<img src="https://tex.z-dn.net/?f=%5Ctext%7BSolve%20for%20%27x%27.%7D%5C%5C%5C%5C%5C%5C3x%20%2B%2056%20%3D235" id="TexFormula1"
3241004551 [841]

Answer:

x=\frac{179}{3}

Step-by-step explanation:

We are solving for x in the equation:

3x+56=235

First, isolate the variable term by subtracting 56 from both sides of the equation:

3x=179

Now, divide both sides of the equation by the coefficient of x:

x=\frac{179}{3}

This solution for x, as a decimal, would be non-terminating. If you divided 179 into 3, you would get the non-terminating decimal of:

59.66666...

Therefore, our solution is:

x=\frac{179}{3}

-

We can check our solution by substituting \frac{179}{3} for x in the initial equation:

3x+56=235

Substitute:

3(\frac{179}{3} )+56=235

Simplify 3(\frac{179}{3} ):

179+56=235

Add:

235=235

Since both sides of the equation are equal, our solution is correct!

5 0
3 years ago
Read 2 more answers
ken wants to rent a car for a week and to pay to more than $130. how far can he drive if the car rental cost $94 a week plus $0.
cupoosta [38]
If Ken wants to pay more than 130, he needs to drive more than 90 miles. You subtract 94 from 130, which equals 36. 36 divided by .4 (for the price per mile) and it equals 90.
4 0
4 years ago
Compare the value of √(100/25) to the value of √100/√25.
olga2289 [7]

Answer:

4 16 2.000

5 25 2.236

6 36 2.449

7 49 2.646

Step-by-step explanation:

7 0
3 years ago
Least to greatest √5,-2.1,0.5,-0.5,5/100
Sladkaya [172]

Answer: -2.1, -0.5, 5/100, 0.5, √5

Step-by-step explanation:

Start with the negative numbers. Take the absolute value - the ones with the largest absolute value are the farthest from 0, so they are the smallest numbers.

-2.1, -0.5

Then, convert the numbers not in decimals to decimals.

5/100 = 0.05

√5 is about 2.3.

5/100, 0.5, √5

6 0
4 years ago
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