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Sergeu [11.5K]
3 years ago
13

Suppose that for a randomly selected high school student who has taken a college entrance exam, the probability of scoring above

650 is 0.30. A random sample of n = 10 students was selected. The mean μ of X, the number of students in the sample who have scores above 650 is ______.
Mathematics
1 answer:
Sophie [7]3 years ago
5 0

Answer:

3.0

Step-by-step explanation:

n=10

p=0.30

mean=np=10X0.3 = 3

That is it.

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you buy a sandwich for $2.95, an apple for $0.85, and a bottle of juice for $1.05. What is the total cost?
user100 [1]

Answer:

$4.85

Step-by-step explanation:

Add the numbers:

2.95

1.05

<u>0.85</u>

4.85

3 0
3 years ago
4.6.3 Test (CST): Linear Equations
inn [45]

The slope of the green line if the lines are perpendicular is -1/4

<h3>Perpendicular lines</h3>

For two lines two be perpendicular, the product of their slope must be -1. Let the slope of the red and green line be m1 and m2.

Given the following

Slope of red line = 4

According the definition

4m2 = -1

m2 = -1/4

Hence the slope of the green line if the lines are perpendicular is -1/4

Learn more on perpendicular lines here: brainly.com/question/1202004

#SPJ1

5 0
2 years ago
Please help I don't understand
Yuri [45]
If they are similar they are by a ration of 1:2 but you dont know all the angles or all the sides.
6 0
3 years ago
Find the value of 48 - 32 = 4.2.<br> 8
MariettaO [177]

Answer:

48 - 16 = 32

Step-by-step explanation:

Use the PEMDAS method to help you solve the problem.

Parenthesis

Exponents

Multiply (Left to right)

Divide (Left to right)

Add (Left to right)

Subtract (Left to right)

32 ÷ 4 = 8

8 x 2 = 16

48 - 16 = 32

3 0
3 years ago
The owner of a health club decides to reduce the $35 membership fee by $5. What is the approximate percent decrease in the fee?
valentina_108 [34]

divide how much it was reduced ( 5) by the original price(35)

5/35 = 0.14285, now turn that into a percent so about 14.3%



8 0
3 years ago
Read 2 more answers
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