Answer:
And we can use the normal standard distribution or excel to find this probability and we got:
Step-by-step explanation:
We define the parameter as the proportion of students at a college who study abroad and this value is known 
, we select a sample size of n =40 and we are interested in the probability associated to the sample proportion, but we know that the distirbution for the sample proportion is given by:
And the paramters for this case are:
We want to find the following probability:
For this case since we know the distribution for the sample proportion we can use the z score formula given by:
Replacing the info given we got:
And we can use the normal standard distribution or excel to find this probability and we got:
Hey there! I'm happy to help!
We see that if you add 5% to the original cost, we have $168 as our cost. This means that 105% of the original cost is 168. Let's set up an equation to find the original cost. Let's call our original cost c.
To turn a percent into a decimal, you divide by 100.
1.05c=168
We divide both sides by 1.05.
c=160
Therefore, the original cost was $160.
Have a wonderful day! :D
Answer:
The correct answer is £449.20 rounded upto 2 DP.
Step-by-step explanation:
Brian pays £465.98 a year on his car insurance.
The insurance company reduces the price by 3.6%.
The amount reduced by the insurance company is 3.6% of 465.98 = £16.77528.
Price the insurance company charges now is given by subtracting the previous cost with the reduction amount.
Thus the insurance cost now = £ (465.98 - 16.77528) = £449.20472 ≈ £449.20.
Thus the reduced insurance cost Brian has to pay now is £449.20 rounded to 2DP.
Answer:
F= 0.5
Step-by-step explanation:
