Express 3 as a fraction. A) 1/1 B) 1/3 C) 3/1 D) 3/3
2 answers:
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Answer:
The unit price is <u>63 cent</u> per kilogram bag of rice.
Step-by-step explanation:
Given:
A 6-kilogram bag of rice costs $3.80.
Now, to find the unit price.
So, to get the unit price we use unitary method:
If cost of 6 kilogram bag of rice = $3.80.
Then cost of 1 kilogram bag of rice = =
Thus, the unit price is $0.633 per kilogram bag of rice.
Now, according to question we convert the unit price into cent by using conversion factor:
$1 = 100 cent
$0.633 =
<em>So, rounded to nearest cent = 63 cent.</em>
Therefore, the unit price is 63 cent per kilogram bag of rice.
Answer: -3.0593
Step-by-step explanation:
The test statistic for the difference between two population mean (when population standard deviations are known ) is given by :-
where ,
= Sample sizes taken from two populations 1 and 2.
= Difference between two Sample mean.
= Standard deviations of populations 1 and 2.
As per given , we have
We assume that the data follows a normal distribution.
Then, the test statistic will be :-
Hence, the test statistic= -3.0593