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Bas_tet [7]
3 years ago
7

Identify which of these types of sampling is​ used: random,​ systematic, convenience,​ stratified, or cluster. To determine her

moodmood​, MirandaMiranda divides up her day into three​ parts: morning,​ afternoon, and evening. She then measures her moodmood at 44 randomly selected times during each part of the day. What type of sampling is​ used?
Mathematics
1 answer:
Artist 52 [7]3 years ago
6 0

Answer:

achievements

Step-by-step explanation:

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Expression for the area of the rectangle shown. (A = length x
Mamont248 [21]
4(8x-2)
Distribute the 4
So it should be 32x-8

Hope it helps
5 0
3 years ago
If 3x - 2 = -x + 10, then x =
Kipish [7]

Answer:

3

Step-by-step explanation:

3x-2= -x+10

4x= 12

x=3

5 0
2 years ago
Read 2 more answers
When multiplying two polynomials of degrees m and n, will the product be a polynomial? If so, explain, and state the degree.
vfiekz [6]
Yes.
The degree will be m+n
7 0
3 years ago
During the early part of the 1994 baseball season, many sports fans and baseball players noticed that the number of home runs be
Ratling [72]

Answer:a

 a

    m  = 57.5

b

   \= x  = 50.14

Step-by-step explanation:

From the question we told that

  The stem plots for American League is

                  2\\3\ \ \ \ \ 5\\4 \ \ \ \ \ 0\  3 \ 9\\5 \ \ \ \ \ 1\ 4\ 7\ 8\ 8\\6 \ \ \ \ \ 4\ 8\ 8\\7 \ \ \ \ \ 5\ 7

Here the first column  is the tens while each digit in the in the second column is the unit of the first column

  For example row 3 means

      40 , 43, 49

The  sample  size is  n = 14  

Generally the median is mathematically represented as

         m  =  \frac{ K  +  Z}{2}

Here  K is the (\frac{n}{2}) th  \  term \ in \ the \  data \  given i.e  \frac{14}{2}  =  7th \  term

 From the stem plot the 7th term is  57

And

       K is the (\frac{n}{2} + 1) th  \  term \ in \ the \  data \  given i.e  \frac{14}{2} + 1 =  8th \  term

 From the stem plot the 8th term is  58

Thus the median is  

          m  =  \frac{ 57  +  58}{2}

=>       m  = 57.5

The stem plots for National League is

            2\ \ \  9\\3\ \ \ \ 1\\4 \ \ \ \ 2\ 6\ 7\ 8\ 8\\5 \ \ \ \  3\ 5\ 5\ 5\\6 \ \ \ \  3\ 3\ 7\\7\\

Generally the mean is mathematically evaluated as

           \= x  =  \frac{\sum x_i}{n}

           \= x  =  \frac{29 + 31 + 42 + 46 + 47 + 48 + 48 + 53 + 55+ 55+ 55+ 63+ 63+ 67}{14}

         \= x  = 50.14

5 0
3 years ago
A boat going upstream on The River averages 4 mph. Going downstream, the boat averages 9 mph. Find the speed of the current and
makkiz [27]

Answer: The speed of the boat in still water is 6.5 mph.

The speed of the current is 2.5 mph

Step-by-step explanation:

Let x represent the speed of the boat in still water.

Let y represent the speed of the current.

A boat going upstream on The River averages 4 mph. Assuming it travelled against the current while going upstream, its total speed would be (x - y) mph. It means that

x - y = 4- - - - - - - - - - - -1

Going downstream, the boat averages 9 mph. Assuming it travelled with the current while going upstream, its total speed would be (x + y) mph. It means that

x + y = 9- - - - - - - - - - - -2

Adding both equations, it becomes

2x = 13

x = 13/2

x = 6.5 mph

Substituting x = 6.5 into equation 1, it becomes

6.5 - y = 4

y = 6.5 - 4

y = 2.5 mph

7 0
3 years ago
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