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Sphinxa [80]
3 years ago
12

In a market test of a new chocolate raspberry coffee, a poll of 400 people (sample 1) from Dobbs Ferry showed 250 preferred the

new coffee. In Irvington, 170 out of 350 people (sample 2) preferred the new coffee. We want to know whether a higher proportion of people in Dobbs Ferry prefer the new coffee. What is the statistic test type involved here?
Mathematics
1 answer:
lara [203]3 years ago
3 0

Answer:

Proportion

Step-by-step explanation:

Given that a poll of 400 people (sample 1) from Dobbs Ferry showed 250 preferred the new coffee

Sample proportion for I = \frac{250}{400} =0.625

In Irvington, 170 out of 350 people (sample 2) preferred the new coffee.

Sample proportion for II = \frac{170}{350} =0.4857

Both are in decimals thus comparing is easier

We find that

0.625>0.4857

Hence a higher proportion of people in Dobbs Ferry prefer the new coffee.

The statistic test type is use of proportion

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Which of the following functions has a graph with a vertex that is a translation 5 units horizontally to the right of the vertex
andrezito [222]

Answer:

g(x) = (x -3 )^2 + 2

Step-by-step explanation:

f(x) = (x + 2)^2 + 2

We want to shift this 5 units to the right

The parabola is written in the form

y = a(x-h) ^2 +k  where (h,k) is the vertex

The vertex is at ( -2, 2)

We want to shift it 5 units to the right

-2+5 = 3

g(x) = (x -3 )^2 + 2

7 0
3 years ago
A florist normally takes 20 hours to assemble 10 flower arrangements how long do it takes to do one flower arrangement
Mariana [72]
20/10= 2

All you need to do is divide the number of hours it takes by the number of flower arrangments. So, it takes the florist 2 hours to assemble one flower arrangement.

I hope this helps!
~kaikers
5 0
3 years ago
How many km are equal to 3,400 m
Archy [21]
1 km = 1000 m

So 

x km = 3,400 m

that means 3.4 km would be equal to 3,400 m

your final answer is

\boxed{\bf{3.4~km}}
3 0
3 years ago
Let A= {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. Suppose an element of A is randomly selected. What is the probability that it belongs to
gregori [183]
<h3>Answer:  3/5</h3>

============================================================

Explanation:

The set {1, 2}U{2, 6, 7, 9}U{5, 6, 7} simplifies to {1,2,5,6,7,9} after we combine everything and sort the values. We toss any duplicates.

Let B = {1,2,5,6,7,9}

There are 6 items in set B out of 10 items in set A.

The probability of landing in set B, if you pick something randomly from A, is 6/10 = 3/5

8 0
2 years ago
Read 2 more answers
Lin sold 4 more shirts than Greg. Fran sold 3 times as many shirts as Lin. In total the three sold 51 shirts. Which represents t
Alex17521 [72]
 <span>Your Answer: D 

Why.... 

You can make equations out of the information 
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L = 4 + G ---"Lin sold 4 more shirts than Greg" 
F = 3L ---"Fran sold 3 times as many shirts as Lin" 
F + G + L = 51 ---"In total the three sold 51 shirts" 

Use F + G + L = 51 
Substitute the equations in for F and L (because you need to know the G) like this.... 

(3L) + G + (4+G) = 51 

You still have a variable besides G in there... you can use the L= 4+G and substitute again so that there are only G's 

( 3(4+G) ) + G + (4+G) = 51 ---- SIMPLIFY :D 
( 12 + 3G ) + G + 4 + G = 51 
12 + 3G + G + 4 + G = 51 ---Combine like terms 
16 + 5G = 51 </span>
6 0
3 years ago
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