An apartment building has a parking lot with 12 parking spaces for tenants. At 6 a.m., all 12 spaces were full. At 8 a.m., the n
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<u>Answer:</u>
(i) Total cost of the flat is Rs. 540000.
(ii) Expenditure incurred on labour is Rs. 150000
<u>Step-by-step explanation:</u>
According to the question, cement cost is Rs. 112500, which represents 75° in the pie chart.
(i) The total cost of the flat is represented by the total 360° in the pie chart.
∴ Using unitary method
75° represents Rs. 112500
⇒ 360° represents = × 360
= Rs. 540000
∴ Total cost of flat = Rs. 540000
(ii) Similarly, to calculate the cost of labour, represented by 100° in the pie chart, we can use the unitary method:
75° represents Rs. 112500
⇒ 100° represents = × 100
= Rs. 150000
∴ Cost of labour = Rs. 150000
Answer:
S = I-E.
We can find the expected value of S and we got:
And that represent the mean of the amount of money into your savings account each month
And now we can find the variance of the random variable S like this:
And since we know that then we have:
And then the deviation would be:
And that represent the standard deviation of the amount of money you put in your savings account each month
Step-by-step explanation:
Let I the random variable that represent the income for each month and we know:
Let E the random variable that represent the monthly expenses for each month and we know:
And for this case we know that the random variables I and E are independent, so then
We can define the random variable S representing the amount that we can save each month and we can define S = I-E.
We can find the expected value of S and we got:
And that represent the mean of the amount of money into your savings account each month
And now we can find the variance of the random variable S like this:
And since we know that then we have:
And then the deviation would be:
And that represent the standard deviation of the amount of money you put in your savings account each month