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3 years ago

PLEASE HELP YOU WILL GIVE YOU POINTS!!!

Mathematics

1 answer:

Dafna1 [17]3 years ago

8 0

Answer:

The Answer is the 2nd Table from the top

Step-by-step explanation:

Total of 30 men, 20 watched 10 didn't

Total of 80 participants, 45 Watched, 35 Didn't

The Female participants had to add up to fill in the bottom rows.

You might be interested in

Suppose the probability of passing a driving test is 65%. (a) on a certain afternoon 15 people are tested. (i) what is the expec

Len [333]

In this current scenario,
Probability of passing, p = 65% = 0.65
Then,
Probability of not passing, q = 1-p = 1-0.65 = 0.35

Part (a): When 15 people are tested
(i) Number of people expected to pass
This is 65% of the 15 people tested. That is,
Number of people expected to pass = 0.65*15 = 9.75. This is rounded downwards as upward rounding will violate the 65% criteria.
Therefore,
Number of people expected to pass = 9 people.

(ii) Probability that 11 people are expected to pass the test
p(x=11) = [15Cx]*p^x*q^(15-x) = [15C11]*0.65^11*0.35^(15-11) = 0.1792 ≈ 17.92%

Part (b): Teenager determined to pass the test no matter how many times

(i) Probability that he passes the test the third time
This means that he will fail the first and second time. That is,
Probability pf passing the third time = q*q*p = 0.35*0.35*0.65 = 0.079625 = 7.9625%

(ii) Number of trials it takes to pass
This is a case of mathematical expected, E, that it takes before first occurrence of success. Normally,
E = 1/p
Substituting;
E = 1/0.65 = 1.54 ≈ 2
Therefore, at least two trials will be required.

7 0

3 years ago

What is the midpoint to the segment below?

shtirl [24]

Step-by-step Answer:

The coordinates of the mid-point of a segment whose end-points are known is the average of the coordinates of the end-points.

Here, the end-points are: (-11,0), (9,-1)

So the x-coordinate of the mid-point is (-11+9)/2 = (-2/2) = -1, and

the y-coordinate of the mid-point is (0-1)/2 = -0.5

So the mid-point is (-1,-0.5)

Check the numbers by plotting the point on the graph!

3 0

3 years ago

Am i right?? this is a graded assignment and no links!!

Darya [45]

Answer:

yes

Step-by-step explanation:

6 0

3 years ago

Write the expression 12^-2 in simplest form.

olga2289 [7]

Answer:

Step-by-step explanation:

1/12^2 = 1/144

8 0

2 years ago

Help me Plz I’m stuck

spin [16.1K]

Answer:

Use all the given information:

Price of a slice in $ - x

Number of slices- 3

Total cost of slices- 3x

Price of chopped cheese in $-  2+x

Number of chopped cheeses- 4

Total cost of chopped cheeses- 8+4x

Total cost- 7x+8

Step-by-step explanation:

We are told that the price of a slice is x and that Dashaun bought 3 slices.

So to find the total amount paid for slices, multiply the price by the number of slices:

$3*x=3x$

We are told that the price of chopped cheese is $2 more than a slice. Use y as the cost for chopped cheese:

$y=2+x$

Dashaun bought 4 chopped cheeses.

To find the total cost of chopped cheeses bought, multiply the cost per cheese by the amount of cheese purchased:

$4y$

Insert the value of y:

$4(2+x)$

Use the distributive property:

$8+4x$

This is the total cost for the chopped cheeses.

To find the total of lunch, add the prices for the slices and cheeses together:

$T=3x+8+4x\\\\T=7x+8$

The total cost for lunch is 7x+8

:Done

4 0

3 years ago