Estimate the standard error of the sample mean for men

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In Eurelia there are three categories of bicycle license, with different fees for each. The table below is based on a random sample of 122 Eurelian bicycle-license holders.

License Fee

25$ 30$ 27$

Female 18 12 14

Male 6 4 10

Other 18 24 16

a) Is the mean amount paid by men significantly greater than $25?

b) Estimate the standard error of the sample mean for men.

c) Form a 95% confidence interval for the mean amount paid by men.

Reference no: EM13240338

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