The results of a CDC (Centers for Disease Control and Prevention) survey found t

Question

The results of a CDC (Centers for Disease Control and Prevention) survey found that 44% of adults have yearly flu shots, with a margin of error plus or minus 0.4% with 95% confidence.

This means

The sample proportion was 0.44 and sampling theory tells us that sample proportion differs from the actual population proportion by less than 0.004 95% of the time.

0.4% of adults were not included in the survey.

0.4% of the adults surveyed refused to finish the survey.

The percentage of the adults surveyed who get annual flu shots was either 43.6% or 44.4%.

The sample proportion was 0.44 and sampling theory tells us that sample proportion differs from the actual population proportion by less than 0.004 95% of the time.

0.4% of adults were not included in the survey.

0.4% of the adults surveyed refused to finish the survey.

The percentage of the adults surveyed who get annual flu shots was either 43.6% or 44.4%.

Explanation / Answer

Given

sample proportion of adults have yearly flu shots = 44%

At 95% confidence,

margin of error = 0.4% = 0.004

ans-> A) The sample proportion was 0.44 and sampling theory tells us that sample proportion differs from the actual population proportion by less than 0.004 95% of the time.

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