A toy manufacturer uses 1,000 plastic wheels to make 250 toy trucks. If they use 3,584 plastic wheels in an 8 hour shift, how ma
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Answer:
Savings per can would be 0.02 cents when purchased in lots.
Step-by-step explanation:
Given:
Ordinary price of soup 2 cans = 0.33 cents.
When purchases in lots 12 cans = 1.74
We need to find the saving per can when purchased in Lots.
Solution:
Ordinary price of soup 2 cans = 0.33 cents.
1 can = Cost of 1 can when purchased ordinary.
By Using Unitary method we get;
Cost of 1 can when purchased ordinary =
Now we will find the Cost of 1 can when purchased in lot.
12 cans = 1.74
1 can = Cost of 1 can when purchase in lot.
Again by using Unitary method we get;
Cost of 1 can when purchase in lot =
Savings = Cost of 1 can when purchase in lot - Cost of 1 can when purchased ordinary
Savings =
Hence Savings per can would be 0.02 cents when purchased in lots.
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) .