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Alenkinab [10]
3 years ago
15

Which question is statistical?

Mathematics
1 answer:
pickupchik [31]3 years ago
6 0
The last three, I believe, are statistical.
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Can someone help please??
marishachu [46]

Answer:

b

Step-by-step explanation:

4 0
3 years ago
What is the estimated margin of error, using standard deviation?
OLEGan [10]
Find the mean ( average):
105 + 104 + 110 + 112 + 114 + 106 + 108 +109 = 868
Mean = 868 / 8 = 108.5

Standard deviation:
108.5 - 105 = 3.5, 3.5^2 = 12.25
108.5 - 104 = 4, 4^2 = 16
110 - 108.5 = 1.5, 1.5^2 = 2.25
112 - 108.5 = 3.5, 3.5^2 = 12.25
114 - 108.5 = 5.5, 5.5^2 = 30.25
108.5 - 106 = 2.5, 2.5^2 = 6.25
108.5 - 108 = 0.5, 0.5^2 = 0.25
109 - 108.5 = 0.5, 0.5^2 = 0.25

12.25 + 16 +2.25 + 12.25 + 30.25 +6.25+0.25+0.25 = 79.75
79.75/8 = 9.96875, SQRT(9.96875) = 3.1573

Standard Deviation = 3.1573

108.8 +/- 1.96 *(3.1573/sqrt(8) = 110.687 and 106.312

110.687 - 108.5 = 2.19
108.5 - 106.312 = 2.19
 

Margin of error = +/- 2.19



3 0
3 years ago
What is the value of x in the equation below?<br> -3-(-8)-(-2) = x<br> O-13<br> O9<br> O 3<br> O 7
posledela

Answer:

7

Step-by-step explanation:

4 0
3 years ago
A student formed a pattern in which each term is represented by a sum. The first four terms of the pattern are shown below
Rainbow [258]
N^2 should be the correct answer. Based on those numbers, it appears that the sum can be found by squaring the term n
5 0
3 years ago
What is the correct value of x in the equation 2x + 3= 6​
Brrunno [24]

Answer:

x=(3/2)  OR  1.5

Step-by-step explanation:

2x+3=6

2x=6-3

2x=3

x=(3/2)  OR  1.5

5 0
3 years ago
Read 2 more answers
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