The correct answer is <span>A. It used pictographs to express ideas.</span>
According to Christopher Baugh, the invention of electric lighting beginning in the 1880s allowed for the exposure of the inherent artificiality of both the carpentered and painted stage forms, making them look more two-dimensional especially with respect to their three-dimensional scenic partners.
Prior to the use of electric lighting, gas or oil was used as the fuel to produce soft and gentle lighting that allowed for the blending of the carpentered and painted stage forms with the three-dimensional elements in the stage.
Congress was given control over trade between states. Hope it helps.
The test statistics which will be used here is standard deviation.
<h3>What is standard deviation?</h3>
The standard deviation is a statistic that measures the dispersion of a dataset relative to its mean and is calculated as the square root of the variance. The standard deviation is calculated as the square root of variance by determining each data point's deviation relative to the mean.
A volatile stock has a high standard deviation, while the deviation of a stable blue-chip stock is usually rather low.
Thus, Option D is true, as standard deviation is the test statistics which will be used here.
Learn more about standard deviation here,
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<u>Answer:
</u>
Depending on the data regarding the air quality indices, the changes can be chosen to be incorporated or not incorporated.
<u>Explanation:
</u>
- The change in the air quality indices and its effect on the national income would be needed to be devised correctly if it has to be incorporated.
- The data obtained on air quality is highly vulnerable to fluctuation based on the methods of data collection.
- As it is difficult to measure the impact of changed air quality indices on the economy, its incorporation in national income is also difficult.
