1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Natali5045456 [20]
3 years ago
14

In a survey of 200 professors at Gotham University, professors were asked, “Regarding your weight, do you think you are: About r

ight? Overweight? Underweight?” The following contingency table displays the results of the survey. Perception of Weight Gender About Right Overweight Underweight Total Female 80 39 3 122 Male 52 10 16 88 Total 132 49 19 200 One professor will be selected at random from the 200 professors involved in the survey. What is the probability that this professor is female and feels "About Right"? Question 5 options: 1.27 0.61 0.92 0.40 0.66
Mathematics
1 answer:
DochEvi [55]3 years ago
3 0

The probability that a randomly selected professor is female and feels "About Right" is 0.40

The distribution table :

____About right _ Oweight _ Uweight __ Total

Female _ 80 _____ 39 ______ 3 _______ 122

Male ___ 52 _____ 10 ______ 16 _______ 88

Total ___ 132 ____ 49 ______ 19 _______ 200

Oweight = Overweight

Uweight = Underweight

Recall :

Probability = required outcome / Total possible outcomes

Probability that a selected professor is female and feels 'About right' :

Required outcome = number of female professors who feels 'About right' = 80

Total number of professors = 200

Hence,

P(Female and 'About right') = 80/200 = 0.40

Learn more : brainly.com/question/11234923

You might be interested in
Zachery is solving the equation 3/4 (x - 8) = 12
Maru [420]

Answer:

3/4*x - 3/4*8=12

3/4x -6=12

3/4x=12+6

3/4x=18

x=24

Step-by-step explanation:

multiply 3/4 into the content inside the brackets

have -3/4*8 cross the equal sign changing its sign from - to +

divide both sides by 3/4

6 0
3 years ago
Jerry was using matrices to solve the system of three equations. He has shown all his steps. Did he make a mistake if so in what
melomori [17]

There are several ways to solve a system of equation; one of these ways is the use of matrix.

<em>Jerry made a mistake at step 2</em>

From the attachment, the step 1 is represented as:

\mathbf{\frac 12R_1 \left[\begin{array}{cccc}1&1&1&0\\5&3&-2&-4\\3&2&1&1\end{array}\right] }

The equation in step 2 is given as:

\mathbf{R_2 = 5R_1 - R_2}

This means that:

We subtract the elements of row 2 from the elements of row 1, multiplied by 5

So, we have:

\mathbf{R_2 = 5\left[\begin{array}{cccc}1&1&1&0\end{array}\right] } - \left[\begin{array}{cccc}5&3&-2&-4\end{array}\right] }

Expand

\mathbf{R_2 = \left[\begin{array}{cccc}5&5&5&0\end{array}\right] } - \left[\begin{array}{cccc}5&3&-2&-4\end{array}\right] }

Subtract corresponding cells

\mathbf{R_2 = \left[\begin{array}{cccc}0&2&7&4\end{array}\right] }

So, the new row 2 elements should be:

\mathbf{ \left[\begin{array}{cccc}0&2&7&4\end{array}\right] }

However, the row 2 elements of Jerry's steps are:

\mathbf{R_2 = \left[\begin{array}{cccc}0&-2&-7&-4\end{array}\right] }

This means that:

Jerry made a mistake; and the mistake is at step 2

Read more about matrix at:

brainly.com/question/21848291

4 0
2 years ago
Read 2 more answers
Find the number of terms in the expansion of [(x+1)^6+(x-1)^6]
lesya [120]

Answer:the number of terms is 4

Step-by-step explanation:

6 0
2 years ago
Will mark BRAINLIST Find the perimeter of the following shape, rounded to the nearest tenth: coordinate plane with quadrilateral
kolbaska11 [484]

Answer:

11.3 units

Step-by-step explanation:

Let's find the length of one of the boxes.

a^2+b^2=c^2\\1^2+1^2=c^2\\1+1=c^2\\2 = c^2\\\\\sqrt{2} = c\\ c = 1.414...

Let's simplify c down to 1.41.

Now, there are 8 of these little boxes for the perimeter, let's multiply.

1.41\cdot8=11.28

That can be simplified to the nearest tenth - 11.3

Hope this helped!

8 0
3 years ago
Round 721295.198715 to the nearest ten.
zimovet [89]

Answer:

7212960

Step-by-step explanation:

You have to round up since the number in the ones place is a 5.

4 0
2 years ago
Other questions:
  • Si se suma por una parte la población de las entidades que se encuentran en la frontera del norte y por otra las de la frontera
    9·1 answer
  • 4 (x -1) &gt;1/2 ( 4 + 12x)
    15·2 answers
  • What is the sum of 10 cubed and 25 squared?
    13·1 answer
  • How to solve 4|x+6|greater than or equal to 20
    6·1 answer
  • In a recent year a baseball team paid seven times as much to their ace pitcher as they paid to their shortstop. If they paid ​$
    13·1 answer
  • For all values of x,
    14·1 answer
  • X + x(x + y) + y; use x = 4, and y = 1
    10·2 answers
  • BRAINLIEST TO CORRECT
    7·1 answer
  • I have "Write an equation for each problem. Then solve the equation.
    14·1 answer
  • Completed in 1863 , the dome is one of the most recent additions to the United States Capitol. It is supported by 36 iron ribs a
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!