A teacher predicts what the distribution of grades on the final exam will be and

Question

A teacher predicts what the distribution of grades on the final exam will be and they are recorded in the table below. The actual distribution for a class of 20 is in the table below. State the null and alternative hypotheses. H_0: The observed class grades do not fit the expected grades. H_3: The observed class grades fit the expected grades. H_0: The distribution of frequency for each grade is not the same. H_a: The distribution of frequency for each grade is the same. H_0: The observed class grades fit the expected grades. H_a: The observed class grades do not fit the expected grades. H_0: The distribution of frequency for each grade is the same. H_3: The distribution of frequency for each grade is not the same.

Explanation / Answer

for above Ho: the observed class grade fit the expected grades.

Ha: the observed class grades do not fit the expected grades

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