Mathematics, 10.06.2021 20:40 valerieaj113
A bank wonders whether omitting the annual credit card fee for customers who charge at least $3,000 in a year would increase the amount charged on their credit card. The bank makes an offer to an SRS of 500 existing credit card customers. It then compares how much these customers charge this year with the amount they charges last year. The mean increase is $565, and the standard deviation is $267. Give a 95% confidence interval for the mean amount of the increase. Interpret your answer in simple English.
Answers: 3
Mathematics, 21.06.2019 14:30
Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition
Answers: 1
Mathematics, 21.06.2019 17:00
Evaluate the expression for the given value of the variable. 5×(h+3) for h=7
Answers: 1
Mathematics, 21.06.2019 18:30
Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much
Answers: 2
A bank wonders whether omitting the annual credit card fee for customers who charge at least $3,000...
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