Elect parameter or statistic to classify each statement.
information parameter statistic
85% of the golf team has scored lower than 80 strokes.
according to the survey, the each member of the soccer league has an average number of 2 jerseys.
of the 100 swim teams surveyed across america, 23 of them practice 10 hours a week.
a sample of football players suggests that 26% of football players run on weekends.
the soccer team has won 3 games for every 5 they have played.
78% of those surveyed at the fair bought popcorn.

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Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.