3 years ago

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Mathematics

2 answers:

Lubov Fominskaja [6]3 years ago

4 0

I’m so sorry I can’t figure it out 0512

Dvinal [7]3 years ago

3 0

Should of payed attention

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You want to rent an unfurnished one-bedroom apartment in Boston next year. The mean monthly rent for a simple random sample of 3

Tpy6a [65]

Answer: 99% confidence interval would be $(1346.37,1553.63)$

Step-by-step explanation:

Since we have given that

Sample size = 30

Sample mean = $1450

Standard deviation = $220

We need to find the 99% confidence interval.

So, z = 2.58

So, confidence interval would be

$\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=1450\pm 2.58\times \dfrac{220}{\sqrt{30}}\\\\=1450\pm 103.63\\\\=(1450-103.63,1450+103.63)\\\\=(1346.37,1553.63)$

Hence, 99% confidence interval would be $(1346.37,1553.63)$

4 0

4 years ago

Angel invests money in an account paying simple interest. He invests $110 and no money is added or removed from the investment.

Elena-2011 [213]

Answer:

82.8

Step-by-step explanation:

4 0

3 years ago

the production line where you work can assemble 5 amplifiers every 30 minutes at this rate how long should it take the line to a

nevsk [136]

See this question as Ratio.

Amplifiers : Time Taken in minutes

5 : 30

5x= 125
x= 25

so

5*25 : 30*25

125 : 750

750 minutes.
12 hours 30 minutes.

6 0

3 years ago

Find the measure of angle x in the figure below: (1 point)

Aleks04 [339]

Answer:

x = 50

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 2 given angles in the lower triangle and subtract from 180 to find the third angle

third angle = 180° - (65 + 65)° = 180° - 130° = 50°

x = third angle = 50 ( vertical angles )

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3 years ago

Find the equation of the line pleaseeeeee

mojhsa [17]

The equation of the line is Y= 3/4x-2

7 0

3 years ago