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Scilla [17]
4 years ago
12

A test consists of 18

Mathematics
2 answers:
Dominik [7]4 years ago
6 0
A. True. about 10% because if you guess on every question you might not pass the test.
omeli [17]4 years ago
5 0
Number of questions = 18

Find each of the probability :
P(13 correct) = 18C13 (0.5)¹⁸ = 8568 / 262144
P(14 correct) = 18C14 (0.5)¹⁸ = 3060 / 262144
P(15 correct) = 18C15 (0.5)¹⁸ =   816 / 262144
P(16 correct) = 18C16 (0.5)¹⁸ =   153 / 262144
P(17 correct) = 18C17 (0.5)¹⁸ =     18 / 262144
P(18 correct) = 18C18 (0.5)¹⁸ =       1 / 262144

Find sum of the above probability : 
Find P( ≥ 13 correct) = ( 8568 + 3060 + 816 + 153 + 18 + 1) / 262144
Find P( ≥ 13 correct) =12616/262144
Find P( ≥ 13 correct) = 1577/32768
Find P( ≥ 13 correct) = 0.048

Answer: 0.048
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Fill in the blanks in questions 8 through 10.
SVEN [57.7K]

Answer:

45

Step-by-step explanation:

1 minute = 8 revolutions

x minutes= 360 revolutions

Divide 360 by 8

45

The wheel will make 360 revolutions in 45 minutes

Check your work:

If 45 minutes = 360 revolutions, and the wheel revolves 8 times per 1 minute, 8 revolutions x 45 minutes should equal 360 revolutions.

(it does)

6 0
2 years ago
Help plzzz will give brainliest
Rasek [7]

Answer:

the amswer is 5 hope this helps you

3 0
3 years ago
Find the mode for the scores 3,760, 5,200, 8,750, 4,400, 5,250
Semenov [28]
There is no mode in these scores.

This is because mode is when two numbers show up the same like 4 and 4.
8 0
2 years ago
I need help I'll give all reward and points! MATH
Mariana [72]

Answer:

A

Step-by-step explanation:

1. A horizontal number line is shown with labels at negative 50, 0, and 35. A red arrow (labeled withdrew 50 dollars) begins at 0 and ends at negative 50. A blue arrow (labeled deposited 35 dollars) begins at 0 and ends at 35.

2. A horizontal number line is shown with labels at negative 50 and 0. A red arrow (labeled withdrew 50 dollars) begins at 0 and ends at negative 50. A blue arrow (labeled deposited 35 dollars) begins at negative 50 and ends at negative 15.

3. A horizontal number line is shown with labels at negative 35, 0, and 50. A blue arrow (labeled deposited 35 dollars) begins at negative 35 and ends at 0 A red arrow (labeled withdrew 50 dollars) begins at 50 and ends at 0.

4. A horizontal number line is shown with a label at 0. A blue arrow (labeled deposited 35 dollars) begins at 0 and ends at 35. A red arrow (labeled withdrew 50 dollars) begins at 35 and ends at negative 15.

7 0
3 years ago
A man sold 3 times as many tie dyed shirts as white shirts. He sold 196 shirts altogether. How many tie dyed shirts did he sell?
Ivanshal [37]
We solve this the following way:

tie dyed shirts = x
white shirts = y 

x = 3y

x + y = 196

3y + y = 196 (we substitute the x with the 3y in the main equation)

4y = 196 (divide this)

y =49

x = 147

The man sold 147 tie dyed shirts and 49 white shirts. 
3 0
3 years ago
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