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antiseptic1488 [7]
3 years ago
9

how many different possible outcomes exist when each spinner shown below is spun one time? one is numbered from 1-3 and one is 1

-4.
Mathematics
2 answers:
Anit [1.1K]3 years ago
7 0

Answer:

there is 7 possible solutions

Ber [7]3 years ago
3 0

Answer: 12

Step-by-step explanation: I took the Quiz

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An educational psychologist wishes to know the mean number of words a third grader can read per minute.
Rama09 [41]

Answer: 208.

Step-by-step explanation:

The formula to find the minimum sample size is given by :-

n= (\dfrac{z^*\times \sigma}{E})^2                                    (1)

, where z* = critical z-value (two tailed).                                                                      

\sigma = Standard deviation ( from prior study ) and E = Margin of error.

As per given , we have

Margin of error : E= 0.29

Confidence level = 85%

Significance level =\alpha=1-0.85=0.15

Using z-table , the critical value (two -tailed)=z^*=z_{\alpha/2}=z_{0.15/2}=z_{0.075}=1.439

As per previous study , Variance =\sigma^2=8.41

\sigma=\sqrt{8.41}=2.9

Now, the required minimum sample size = n= (\dfrac{(1.439)\times (2.9)}{0.29})^2   [Substitute the values in formula (1)]

n=(14.39)^2

n=207.0721\approx208  [ Round to the next integer]

Hence, the minimum number of third graders that must be included in a sample = 208.

5 0
3 years ago
Very confusing, please help
Ksivusya [100]

Answer:

A -2*-2 ≠- 4

Step-by-step explanation:

sqrt(-4)

The answer is an imaginary number

-2*-2 = 4 not -4

7 0
3 years ago
Read 2 more answers
Write a recursive formula for each sequence.<br> 2,20, 200, 2000, ...
Brut [27]

Answer:

1,2

Step-by-step explanation:

6 0
3 years ago
Select the correct answer. What is true of the function as the x values increase?
Alinara [238K]

Answer:

B

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
An ice tray holds 12 ice cubes. If the total volume of the ice in the
AVprozaik [17]

Answer:

the cubes are 1 in on all sides

but...

since there's gaps its more likely that there a 1/2 in or 3/4 in

Step-by-step explanation:

12/12=1

3 0
3 years ago
Read 2 more answers
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