comawhite7820

28.04.2021 • 

Social Studies

PLEASE HELP! Based on a poll of 100 small business owners, a real estate development group claims that 67% of small business owners are in favor of the construction of a shopping mall in the area.

A resident crime prevention group claims that the poll is not valid and that only 33% of small business owners are in favor of the construction of a shopping mall in the area. To determine whether this sample supports the population proportion of 0.67, a simulation of 100 trials is run, each with a sample size of 200 and a point estimate of 0.33. The minimum sample proportion from the simulation was 0.19 and the maximum sample proportion from the simulation was 0.58.

The margin of error of the population proportion is found using an estimate of the standard deviation. What is the interval estimate of the true population proportion?

Enter your answers as decimals; lower limit in the first blank and upper limit in the second blank.

Ответ:

floodlife4223

13.02.2021

Social Studies

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The correct option is;

Un-plowed soil has more earthworms than plowed soil

Explanation:

The data for the unplowed soil are as follows;

Earth worm per square meter in 1994 Spring = 140/m²

Earth worm per square meter in 1994 Fall = 160/m²

Earth worm per square meter in 1995 Spring = 175/m²

Earth worm per square meter in 1995 Fall= 125/m²

The data for the plowed soil are as follows;

Earth worm per square meter in 1994 Spring = 30/m²

Earth worm per square meter in 1994 Fall = 65/m²

Earth worm per square meter in 1995 Spring = 60/m²

Earth worm per square meter in 1995 Fall= 20/m²

Therefore, the earthworms are more plentiful in unplowed soil than in plowed soil

It has been observed that earthworm abundance and diversity of earthworm species increases as the rate of tilling the soil decreased.

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