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2 years ago

PLS HELP!!!!!!!!!!!!!!!!!! THIS IS DUE SOON AND I DONT GET IT

Mathematics

1 answer:

S_A_V [24]2 years ago

4 0

Answer:

Step-by-step explanation:

im not sure i ever done this but 1x2=2 and 2x 40= 80

i dont know sorry im trying my bets

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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

2 years ago

2x+4≥24 how do I solve this problem

Katen [24]

First subtract 4 then divide 2 so u can isolate x

3 0

3 years ago

WORTH 15 POINTSSSSSSSSS

QveST [7]

Answer:

Step-by-step explanation:

Difference in distances = 75-60 = 15 miles

So Car A travels 15 miles more than Car A in an hour

Answered by Gauthmath

4 0

2 years ago

Plz help i'm having troubled understanding how to do this

Lunna [17]

Answer:

1/2 - 2/6 = 1/6

Step-by-step explanation:

to answer two that are different simply take the lesser up or higher down example: 1/2-2/4 this would be zero because 2 x 1/2 = 2/4

8 0

2 years ago

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Which decimal is closest in value to 9/20

yan [13]

Answer:

0.45

Step-by-step explanation:

9/20 is the same as 0.45

7 0

2 years ago

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