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vodomira [7]
2 years ago
13

If you actually know the answer plz give an explanation to the answer so i know you aren't just answering for points, please pla

se help this is due before 12:00!!

Mathematics
1 answer:
iren2701 [21]2 years ago
6 0

Answer:

D

Step-by-step explanation:

The estimated probability of selecting a green marble is 2/25 or 8%, so D is the incorrect statement.

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A receptionist named Kelsey spends 1 minute routing each incoming phone call. In all, how many phone calls does Kelsey have to r
attashe74 [19]
Wouldn't that be 9 calls then? one minute for each call.
5 0
3 years ago
Read 2 more answers
Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors
goblinko [34]

Answer:

1.66

Step-by-step explanation:

We need to conduct a chi square test

The statistic used to check this is given by the below

∑(n, 1) = [(O(i) - E(i)] / E(i)

From the question, we're told the observed value is

Freshmen

Sophomore

Junior

Senior.

After that, we then calculate the expected value.

Freshman

0.3 * 300 = $90

Sophomore

0.24 * 300 = $72

Statistics then finally gives us this

X² = (93 - 90²)/90 + (68 - 72)²/72 + (85 - 78)/78 + (64 -60)²/60

X² = 3² / 90 + 4² / 73 + 13² / 78 + 4² / 60

X² = 0.1 + 0.212 + 2.167 + 0.266 x+

X² = 2.745

X = √2.745

X = 1.66

8 0
2 years ago
In triangle ABC angle BAD is 46° find BCA and AB=AD=AC
Shalnov [3]
Look at the picture.

m\angle a=\dfrac{180^o-46^o}{2}=67^o\\\\m\angle b=180^o-67^o=113^o\\\\m\angle x=\dfrac{180^o-113^o}{2}=33.5^o\\\\Answer:\ [1]\ 33.5^o

5 0
3 years ago
#8 HELP IM STUCK ON THIS
jeka57 [31]

Answer:

12 ft

Step-by-step explanation:

for the model is 1 and the actual is 5

conversion yards to feet

3 feet = 1 yard

20 * 3 = 60

60/5 = 12

your answers 12 ft

hope this helps:)

4 0
2 years ago
In the sahara desert one day it was 146 degrees F .in the Gobi desert the temperature of - 54 degrees f was recorded what is the
ankoles [38]

Answer:

200

146- (-54)= 200

or use a number line

7 0
2 years ago
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