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solmaris [256]
3 years ago
8

I suck please help!!!!!!!!!!!

Mathematics
1 answer:
Natalka [10]3 years ago
4 0
D is the answer I’m pretty sure
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(a) Find a 90% confidence interval for the population mean price (per 100 pounds) that farmers in this region get for their wate
Anon25 [30]

Answer:

The margin of error (E)  =0.49

Step-by-step explanation:

Given,

 mean \bar{x}=6.88

 standard deviation \sigma=1.90

 sample size n=41

90\% \quad \text{confidence interval}

Critical value =\frac{z_\alpha}{2}\quad \quad\quad[\because\;\alpha=1-\text{confidence interval}]  

                                                =1-0.90

                                        \Rightarrow \alpha=0.1

Critical value =\frac{z_{0.1}}{2}

                      =z_{0.05}

                      =1.645

The margin of error (E)  =\frac{z_\alpha}{2} \times\frac{\sigma}{\sqrt{n} }

                                       =1.645\times\frac{1.90}{\sqrt{41} }

                                       =0.49

Hence, The margin of error (E) =0.49

Complete question is attached in below.

                     

7 0
3 years ago
Help me please ASAP.........
likoan [24]

Answer:

last one is correct

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Select a setting so that each given point will lie within the viewing window.
NemiM [27]

Answer:

The given points are

(-13,3)\\(0,0)\\(-2,-7)

The setting would have a interval or 2 units above and below the minimum and maximum of each coordinate.

The given maxium horizontal coordinate is 0.

The given minimum horizontal coordinate is -13.

The given maximum vertical coordinate is 3.

The given minimum vertical coordinate is -7.

Now, we extend each maximum and minimum value by 2 units to create the setting.

So, the setting is

x_{min}=-15\\x_{max}=2\\ y_{min}=-9\\y_{max}=5

With a scale of 2 units.

6 0
3 years ago
HELP I WILL MARK BRAINLIEST
gulaghasi [49]

Answer:

https://quizlet.com/141193969/mirrors-and-lenses-flash-cards/ i dont know

Step-by-step explanation:

7 0
3 years ago
The irrational number square root 67 is greater than [blank]
Tanya [424]

Answer:

The irrational number square root 67 is greater than whole number 8

Step-by-step explanation:

Given

\sqrt{67

Required

Complete the sentence

No options are given.

So, we will solve the expression then compare it with the nearest smallest integer

First, we solve the given expression

\sqrt{67

\sqrt{67} \approx 8.185

By comparison:

8.185 > 8

<em>This implies that, the blank will be completed with 8</em>

3 0
3 years ago
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