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storchak [24]
3 years ago
15

Help needed right away this is timed

Mathematics
1 answer:
ss7ja [257]3 years ago
3 0
I think it might be x
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A survey was given to a random sample of 400 people living in a certain community. The people were asked whether they supported
Hoochie [10]

The total number of people that will be selected is 14.

<u>Step-by-step explanation:</u>

For stratified random sampling at first we need to divide the population into some strata and then choose sample from each. For the given problem the response category is

Sample size of strata = (Size of entire sample by populaion size) multiply strata size

= (20 by 300) multiply 210

after solving we get, 14

therefore, 14 people will be selected.

One merit is that here since we divide the whole data into stratas and then select samples from that so it can be used as a guard against unwanted samples and also gives more accurate sample measure. Here since we required samples from the population who gave yes and no opinion so it is better to use stratified sampling method otherwise if we use simple random sampling then we may choose those samples who gave no opinion. But since we don't use that method so we can avoid this.

4 0
3 years ago
You are getting ready for Thanksgiving dinner and trying to find the perfect outfit. You want to wear your new sweater from Infi
Cerrena [4.2K]

Answer:

Yes

Step-by-step explanation:

6 0
2 years ago
What the answer and how did you get it
Olegator [25]

Let x = the cost of the student discount card.

x + the cost of the passes = 29.50

x + 15(1.50) = 29.50

x + 22.50 = 29.50

Subtract 22.50 on both sides to isolate the variable x.

x = 29.50 - 22.50

x = 7

The student discount card is $7.

7 0
4 years ago
Jeremy's bank account balance was $35.86 at the beginning of the week. This week, he wrote a $5 check to give to his school's Su
kiruha [24]

Answer:

34.61

Step-by-step explanation:

he had 35.86

then gave a 5 dollar check (30.86)

then put in 23.75(54.61)

then took out 20 dollars (34.61)

8 0
3 years ago
Solve the equation q(t)= 4t^2 +5 / t^2 ; t= -x
vaieri [72.5K]

Answer:

q=4t^4+5/t^2x

Step-by-step explanation:Multiply both sides by t^2; Divide both sides by t^2x

 

6 0
3 years ago
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