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miarobless12389
11.12.2019 •
Mathematics
Aconservationist wants to know if the average water level in horseshoe lake is more than the average water level in swan lake.
1. a sample of 23 observations from horseshoe lake has a mean of 43 meters and a standard deviation of 3.2 meters.
2. a sample of 23 observations from swan lake has a mean of 38 meters and a standard deviation of 2.4 meters. test his hypothesis at α = 0.01.
group of answer choices:
o reject h0; it appears that the average water level in horseshoe lake is more than the average water level in swan lake.
o fail to reject h0; it appears that the average water level in horseshoe lake is not more than the average water level in swan lake.
o not sufficient information to decide
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Ответ:
The question is incomplete:
Lisa and Tomas Lopez are buying a new minivan that has a base price of $22,510.the options total $8,062 and destination charge is $770. The dealer's cost is estimated to be 91% of the base price and 88% of the options.
-What is the sticker price of the vehicle?
-Find the dealer's percent of the base price.
-Find the dealer's percent of the options price.
-What is the estimated dealer's cost?
-What is the sticker price of the vehicle? $31,342
-Find the dealer's percent of the base price: $20,484
-Find the dealer's percent of the options price: $7,094
-What is the estimated dealer's cost? $28,348
Step-by-step explanation:
-The sticker price is the result of adding the base price plus the options plus the destination charge.
Sticker price= base price + options + destination charge
Sticker price= $22,510+$8,062+$770
Sticker price= $31,342
-Dealer's percent of the base price: It is 91% of the base price:
$22,510*91%= $20,484
-Dealer's percent of the options price: It is 88% of the options:
$8,062*88%= $7,094
-Estimated dealer's cost= Percent of base price+percent of options price+destination charge
Estimated dealer's cost= $20,484+$7,094+$770
Estimated dealer's cost=$28,348