Social Studies, 18.06.2020 19:57 Brock2002

Gavin's study compared reading error rates and reading comprehension scores between two groups of 50 third-grade students that received different reading programs. His t test data analysis did not indicate any differences between the two types of instruction. The most likely reason for his findings is that:. a. his measures did not measure reading.
b. his sample is too small.
c. he conducted the wrong analysis.
d. his groups were too similar.

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Answer from: norinashanleyc

his groups were too similar.

Explanation:

The t-test is used to check whether there a significant difference exist between means of two types of instructions given. T-test is used for hypothesis testing.

In the scenario above, we are informed that Gavin's study compared reading error rates and the reading comprehension scores between two groups of 50 third-grade students but his t-test data analysis did not show any differences between the two types of instruction that were tested.

The ideal reason for the t-test analysis not to show any differences between the instructions is when the groups are too similar. Due to the similarity, the difference between the means found in the sample will not be statistically different.

Answer from: Quest

marginal cost is a microeconomic measure that us to evaluate the extent to which the level of production of a good is sustainable in accounting, that is, to how many quantities the company plans to profit from the production of the good.

the concept of marginal cost is simple, it means the cost of producing one more item. for example, in the case of pies, the marginal cost is the cost of producing one more pie than those that have already been produced.

it is important to understand that productive activity influences marginal cost. the marginal cost of some goods can be very high, while others may be insignificant. for example, the marginal cost of producing an extra plane is very high. already the marginal cost of a water company to provide 1l more water is derisory.

in the case of pies, the cost involves the inputs, the labor and the fixed cost, which involves the fixed space of the bakery. the level of production initially has the marginal cost decreasing because there is space and manpower available. however, to produce more you have to hire more workers and buy more inputs. if physical space is limited, workers will conflict with places, inputs and their productivity will decrease, meaning there is an optimum point of production for each level of space and manpower. from this point on, the productivity of the workers will be getting smaller because of lack of space, so that the marginal cost of producing one more pie will be increasing. so, although you have not posted the chart, but if you have the answer, you can see that my explanation goes according to the marginal cost curve that will increase from the 4th pie, answer (c).

Answer from: Quest

b because thats the naswer i got

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