Answer: Addition Rule
Step-by-step explanation:This is the probability that either one or both events occur. a. If two events, say A and B, are mutually exclusive - that is A and B have no outcomes
Answer:
the Pythagorean theorem states: a^2 + b^2 = c^2
1) in this case a=18 and b1=25
18^2 + 25^2 = c1^2
324 + 625 = c1^2
949 = c1^2
√949 = c1
cca. 30.8 = c1
2) in this case a=18 and b' = b2 - b1 = 40 - 25 = 15
in the picture im attaching i highlighted the triangles we are working with, and there you can clearly see that b' (the horizontal line at the bottom of the red tr.) is the difference between the lines b2 and b1
now you can use the same technique as in the first case, and the final answer will be cca. 23.4 = c2
3) in this case a=18 and b'' = b4 - b3 = 75 - 55 = 20
same thing as number 2, final answer cca. 26.9 = c3
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.
I am sure the correct answer is x=0.38629436…hope this help you
Answer:
0.233298 kg is the mass of 234 ml of water
Step-by-step explanation:
Mathematically,
mass = density * volume
henry, to get the mass of that volume, we shall need to multiply it by the density of water.
The density of water is 997 kg/m3
To achieve consistency in units, we shall convert 234 ml to m3
Mathematically 1ml = 1 * 10^-6 m^3
Thus, 234 ml = 234 * 10^-6 m^3
Therefore the mass of water will be = 234 * 10^-6 * 997 = 0.233298 kg
