Answer:
The sampling method used is a stratified sampling method
Step-by-step explanation:
sampling is the selection of a predetermined representative subpopulation from a larger population, to estimate the characteristics of the whole population.
Stratified sampling: Here, the total population are divided into subcategories (strata) before sampling is done. The strata are formed based on some common characteristics. In our example, the times of the day (morning, afternoon and evening) has widely varying atmospheric conditions which will add biases to the measurement of air quality. For example, the air in the morning if compared to the afternoon in an industrial area may be purer because of minimal industrial activity, hence effective comparison will be made by stratification.
Answer:
5.31
Step-by-step explanation:
Given the regression line equation,
, where,
x = number of slices of pizza eaten
y = number of laps run immediately
Number of laps run by a player who ate 7 slices of pizza can be predicted by plugging in x = 7 into the regression line equation to find y:




Answer:
1.5
Step-by-step explanation:
4y + 11 = 17
-11 -11
4y = 6
/4 /4
1y = 1.5
If we had the info on with this "data" is, we then can solve it.
Provided in the question, total number of people that can be accommodated in the theatre are 471.
- Now, 254 people are seated
- p is the number of people who can enter the theatre of the movie.
Then, according to the question there are two possibilities. The number of people is less than the total number of People who can be accommodated.

Or, they can be equal to the number of people.

Combining both the inequations, We get

So, the correct option is Option D
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