Social studies class is 4 more than two times the length of recess, in minutes.

1 answer:

8 0

Since there are no numbers, i will assume that the length of recess is 1 minute, or x. if social studies is 4 more than 2 times the length of recess, we can use the equation x*2+4 to solve the problem. the end result will be 6 minutes. Social studies is 6 minutes longer than recess

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Part 2) 95% Confidence Interval
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Lower end of confidence interval= $123.6-2.327* \frac{36.8}{ \sqrt{22}}=105.34$
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Part 4) Comparison of Confidence Intervals
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The 95% confidence interval is: (108.22, 138.98)
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As the level of confidence is increasing, the width of confidence interval is also increasing. So we can conclude that increasing the confidence level increases the width of confidence intervals.

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