To figure out long it took for Ingrid to walk her dog,multiply 3*1 and 1/2 or 3*1.5 to get 4.5 hours or 4 and 1/2 hours.
Answer: (17.42, 20.78)
Step-by-step explanation:
As per given , we have
Sample size : n= 9
years
Population standard deviation is not given , so it follows t-distribution.
Sample standard deviation : s= 1.5 years
Confidence level : 99% or 0.99
Significance level :
Degree of freedom : df= 8 (∵df =n-1)
Critical value :
The 99% confidence interval for the population mean would be :-
Hence, the 99% confidence interval for the population mean is (17.42, 20.78) .
The original price of the computer is $600
During the sale, the computer is 15% cheaper. This means that the computer is selling at 85% (100 - 15%) of its original price.
In order to determine the answer to the question, the following information would be needed :
- Sales price of the computer = $510
- The percentage of the original price the computer is being sold for during the sales = 85%
The formula that can be used to determine the original price of the computer is : sales price / percentage of the original price
$510 / 85%
$510 / 0.85
= $600
A similar question was solved here: brainly.com/question/24457716?referrer=searchResults
Answer:
perimeter=(lengths+breadth)×2
in this case its a square with 9 cm length
9+9×2
18×2
36 its ez
Cheyenne sells 7.1428% of her cards at the craft fair. I hope this helps you!