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anygoal [31]
3 years ago
15

In a survey at a local university 32% of students say they get less than the recommended eight hours of sleep per night. In a gr

oup of 3330 students how many would you expect to get 8 or more hours?
Mathematics
2 answers:
vovangra [49]3 years ago
8 0

<u>Answer:</u>

2264 students get 8 or more hours of sleep.

<u>Step-by-step explanation:</u>

We are given that 32% of students say they get less than the recommended eight hours of sleep per night.

We are to find the number of students who get 8 or more hours of sleep.

Percentage of students who get 8+ hours of sleep = 100 - 32 = 68%

Number of students who get 8 or more hours = 68/100 - 3330 = 2264

Zina [86]3 years ago
6 0

Answer:

2264 students

Step-by-step explanation:

3330/100=33.3

100-32=68

33.3 x 68=2264.4

Hope This Helps! :D

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Answer:D) 0.6375


Step-by-step explanation:

See, the probability that Kevin would inherit diabetes is 0.75

The accuracy of this test is 0.85

See as there is 85% chance of that the test will make right prediction so 85% of 0.75 is that probability that Kevin has diabetes and test will predict it correctly.

85% of 0.75 is 0.75*0.85

= 0.6375

Hope it helps!!!


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3 years ago
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Delicious77 [7]

Answer:

Infinite solutions

Step-by-step explanation:

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Since the variable got eliminated and we got a true statement, the system has infinitely many solutions.

One of the solutions:

(6,0)

8 0
3 years ago
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What is the inverse function of f(x)=2x-1
Goshia [24]

Step-by-step explanation:

Given

f(x) = 2x - 1

f^-1 (x) = ?

Now

Let y = f(x)

or y = 2x - 1

Interchanging the role of x and y

x = 2y - 1

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2

Therefore f^-1(x) = <u>x </u><u>+</u><u> </u><u>1</u>

2

Hope it will help you :)

8 0
3 years ago
When a = a or 2 = 2, what type of solution do we have
Ilia_Sergeevich [38]

Answer:

<h2><u><em>True</em></u></h2>

Step-by-step explanation:

a = a (true)

2 = 2 (true)

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