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galina1969 [7]
3 years ago
14

The probability assigned to each experimental outcome must be

Mathematics
1 answer:
Eva8 [605]3 years ago
7 0

Answer:

Between 0 and 1

Step-by-step explanation:

The probability for each outcome in experimental probability must be a value between 0 and 1.  A probability of 0 means the event did not happen; the probability of 1 means it is certain.  We cannot have probabilities smaller than 0 or greater than 1.

All of the probabilities in an experiment must sum to 1 whole.

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Joe has $173 he earns the same amount of money each week for seven weeks and put this money in the bank now Joe has $208 in the
joja [24]

Answer:

Joe makes 5 dollars a week

Step-by-step explanation:

Joe started with 173 so you will subtract that from the total

208-173=35

You will then divide that number by the number of weeks he has worked

35÷7=5

Therefore joe makes 5 dollars a week

4 0
3 years ago
A plane traveled 240 miles. The trip was with the wind. It took 3 hours. The trip back was into the wind. The trip back took 6 h
sveta [45]

Answer:

Plane speed is 60 miles/hour

Wind speed is 20 miles/hour

Step-by-step explanation:

Lets suppose the speed of the plane in still air is s and speed of the wind is w and since speed in the formula below equals speed of the plane plus the wind's speed so speed=s+w for this journey with the wind

Speed=\frac{Distance}{Time}

Distance=Speed*Time

For the first journey the trip with the wind:

Distance=Speed*Time\\240=(s+w)(3)\\240/3=s+w\\s+w=80

Here we got our first equation for the second equation we use the information from the second trip which was into the wind. Which means the speed here would be speed=s-w

Distance=Speed*Time\\240=(s-w)*6\\240/6=s-w\\s-w=40

so now we got our two equations adding both equations would result into the following:

s+w=80\\s-w=40\\2s=120\\s=60

so speed of the plane is 60 miles/hour put the value of s in any our two equations to calculate the wind speed, lets take the first equation:

s+w=80\\60+w=80\\w=80-60\\w=20

so the wind speed is 20 miles/hour

8 0
3 years ago
The sides of an equilateral triangle measure 16 inches. The midpoints of the sides of the triangle are joined to form another eq
astra-53 [7]

Answer:The perimeter of all four triangles is: 90 inches.

Step-by-step explanation:

7 0
3 years ago
What is the solution of the system of equations?
Zolol [24]
X=2, y=4
Hope this helps :)
<br>
I used the Elimination Method
3 0
4 years ago
Read 2 more answers
. Placebos are used to randomly assign participants to treatment or control ? 2. Using a random chance procedure to assign subje
natulia [17]

Answer:

1. Placebos are used to randomly assign participants to treatment or control ?

False.

2. Using a random chance procedure to assign subjects to treatment or control reduces bias ?

True.

3. A well-designed placebo allows an experiment to be conducted blind. ?

False.

4. In an observational study, the investigators assign the subjects to treatment or control. ?

False.

5. In a blind experiment, the subjects do not know whether they are in the treatment group or control group. ?

True.

6. Placebos are used so that even the people who do not receive a treatment can benefit from the study. ?

True.

7. A placebo is used in all controlled experiments. ?

True.

8. Controlled experiments can be randomized or nonrandomized.

True.

Step-by-step explanation:

To enable the results from the control group to be compared to the results of a treatment group, placebos are administered to the control group while the treatment or independent group receives the real treatment.  Randomization is the process for assigning participants to treatment or control groups, not placebos.  The reason for using a random chance procedure to assign subjects to treatment or control groups is to reduce bias.

8 0
4 years ago
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