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torisob [31]
4 years ago
10

Karen decides to use a random sample to determine her classmates' favorite

Mathematics
1 answer:
Simora [160]4 years ago
8 0
Yes, her question is biased because as she asked, she specifically asks about the color green, not giving the option of the classmate to choose their favorite color.
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A sample of 1500 people from a certain industrial community showed that 800 people suffered from a lung disease. A sample of 100
ss7ja [257]

Answer:

The probability that the difference of the proportions (industrial - rural) is greater than 0.2 is 0.7054

Step-by-step explanation:

Solution

Given that:

n₁ = 1500

x₁ = 800

p₁ =800/1500 =0.533

q₁ = 1- 0.533 = 0.467

Thus,

n₂ =1000

x₂ = 300

p₂ = 300/1000 = 0.3

q₂ = 1-0.3 =0.7

So,

p₁ - p₂ = 0.533 - 0.3

=0.233

Now,

SE (p₁ - p₂ ) =√0.533 * 0467/150 + 0.3 * 0.7/1000

=0.0613

So,

p ( p₁ - p₂  > 0.2

= p ( Ƶ > 0.2 - 0.233/0.0613

p = ( Ƶ > - 0.54)

= 0.7054

3 0
3 years ago
1 2.2.5 Quiz: Volume
LUCKY_DIMON [66]

Answer:

12 1/2 cubic units, the formula is Lenght × Width × Hieght

6 0
3 years ago
1. Luis made a $150 bank deposit using $5 bills and $10 bills. He gave the teller a total of 24 bills. How many $10 bills were i
goldfiish [28.3K]

Answer:

6 $10 bills

Step-by-step explanation:

First you have to make a system of equations like such

5x + 10y = 150

x + y = 24

Now you can use any strategy to simplify it but I'll use multiplication and the subtraction:

5x + 10y = 150 - 5x + 5y = 120 = 5y = 30 this simplified is y = 6. You then substitute 6 for y in either equation. x + 6 = 24 and make it on opposite sides. x = 18.

So 18 $5 bills and 6 $10 bills

4 0
3 years ago
Melinda wants to have a picture window in the shape of a regular hexagon in her new home. She wants the perimeter of the hexagon
salantis [7]
6*x<=9
x<=3/2 feey or 1.5 feet
7 0
3 years ago
Mia used 3 different base 10 blocks to model a 3 digit number what is the number?
spin [16.1K]

Answer:

I think its 300

but wouldn't that be like a 2 digit number like 30? scince they are only 10 blocks 10 + 10 + 10 (3×10= 30)

If you dont understand just coment.

5 0
3 years ago
Read 2 more answers
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