Solve mathematics question: In photo:) Second:)
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Answer:
The degrees of freedom for this sample are 27.
The sample size to get a margin of error equal or less than 0.3656 is n=4450.
Step-by-step explanation:
The degrees of freedom for calculating the value of t are:
With 27 degrees of freedom and 95% confidence level, from a table we can get that the t-value is t=2.052.
The sample size to get a margin of error equal or less than 0.3656 can be calculated as:
The hundredths place is the second place after the decimal point. In this case, it is .
We can round it by looking at the next place to the right, which is a .
is less than
, so we can just cut off everything after the hundredths place. This leaves an answer of
.