Answer:
a. population, units, sample
Explanation:
In a survey or in a research, population is defined as the total number of people or total number of items in the group that we want to study in a research. It is the entire pool from where a sample is drawn.
An unit is defined as the individual members for which the information or data is collected.
A sample is defined is defined as the group or part of the selection from where the information or data is to be obtained.
Answer:

Explanation:
Given




Required
Plot a steam and leaf display for the given data
Start by categorizing the data by their tenth values:




The 0.3's is will be plotted as thus:

The 0.4's is as follows:

The 0.5's is as follows:

The 0.6's is as thus:

Lastly, the 0.7's is as thus:

The combined steam and leaf plot is:

Answer:
The answer is Chocolate spread that contain palm oil.
Explanation:
Based on research, it is estimated that between 1,000 to 5,000 orangutans are killed in Palm Oil concessions.
Answer:
The number of moles of H₂ is 0.01135 moles
The partial pressure of H₂ in the balloon is 0.975 atm
Explanation:
From Dalton's law of partial pressure, we have;
Total pressure = Pressure of H₂ + Pressure of the water vapor
The vapor pressure of water at 20°C = 17.5 mmHg = 0.0230225 atm
For equilibrium, pressure of the balloon = Surrounding pressure = Atmospheric pressure
∴ Pressure of H₂ + Pressure of the water vapor = Atmospheric pressure
Partial pressure of H₂ in the balloon, P = 0.998 - 0.0230225 = 0.9749775 ≈ 0.975 atm
0.975 atm = 98789.595 Pa
Volume of balloon, V = 0.28 L
n = PV/(RT)
Where:
R = Universal gas constant = 0.08205 L·atm/(mol·K)
T = Temperature = 20°C = 293.15 K
∴ n = 0.975 * 0.28/ (0.08205 * 293.15) = 0.01135 moles.