Answer:
Option D. We are 95% confident that the mean amount spent on electric service among the 160 households is between $151 and $216.
Explanation:
A confidence interval is a range of values, derived from the sample statistics, which may include the value of an unknown population parameter.
A 95% confidence interval indicates that between 152 of 160 samples (95%) of the same population will produce confidence intervals that will contain the population parameter.
It also means that we have a 95% confidence that the average (average amount) is among the resulting amounts obtained.
Logically, option "D" is missing the final part. This would be: D. We are 95% confident that the mean amount spent on electric service among the 160 households is between $ 15.
This is the only true option, since the test is based on a sample of only 160 households, the entire population of households cannot be included.
Hence, the correct option is:
Option D. We are 95% confident that the mean amount spent on electric service among the 160 households is between $151 and $216.
Answer:
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I think this is a trick question. Say, there are 2 pounds of cocoa / 1 gallon of chocolate ice cream. But then the problem only mentions the production of eight gallons of <em>strawberry</em> ice cream, not chocolate ice cream.
However, if they're somehow related (like they are made from the same machine), then you need 16 pounds of cocoa to produce 8 gallons of chocolate ice cream.
Answer:
Required 1.
Land = $163,215
Land improvements = $65,286
Buildings = $97,929
Required 2.
Land $163,215 (debit)
Land improvements $65,286 (credit)
Buildings $97,929 (credit)
Cash $310,000 (credit)
Explanation:
Allocation of the purchase cost must be made on the bases appraisal value.
Total Appraisal Value = $215,000 + $86,000 + $129,000
= $430,000
Land = $215,000 / $430,000 × $326,430
= $163,215
Land improvements = $86,000 / $430,000 × $326,430
= $65,286
Buildings = $129,000 / $430,000 × $326,430
= $97,929
