Mathematics, 07.08.2019 04:30, jaqsway34
Amovie theater manager wants to determine whether popcorn sales have increased since the theater switched from using “butter-flavored topping” to real butter. historically the average popcorn revenue per weekend day was approximately $3,500. after the theater started using real butter, the manager randomly sampled 12 weekend days and calculated the sample’s summary statistics. the average revenue per weekend day in the sample was approximately $4,200 with a standard deviation of $140. select the function that would correctly calculate the 90% range of likely sample means.
a. 3,500±confidence. t(0.10,140,12)
b. 4,200±confidence. t(0.10,140,12)
c. 3,500±confidence. norm(0.10,140,12)
d. 4,200±confidence. norm(0.10,140,12)
Answers: 3
Mathematics, 21.06.2019 18:50, anthonylemus36
Jermaine has t subway tokens. karen has 4 more subway tokens than jermaine. raul has 5 fewer subway tokens than jermaine. which expression represents the ratio of karen's tokens to raul's tokens
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Mathematics, 21.06.2019 19:00, glowbaby123
Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60
Answers: 3
Mathematics, 21.06.2019 21:00, mathishard353
Finding tbe values of the variables in each kite
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Amovie theater manager wants to determine whether popcorn sales have increased since the theater swi...
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