Answer:
15/17
Step-by-step explanation:
if they won 2 games they lost 15 (17-2) so the ratio is 15/17
Answer:
50-50
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
the absolute value of a number is the distance from 0
the answer will ALWAYS be positive ;)
A 99% confidence interval for the population mean of high school students that take the bus to school every day is b) ci=(44.34%, 54.43%)
We need to find the 99% confidence interval for the population mean of high school students that take the bus to school everyday
A confidence interval is a range of estimates for an unknown parameter. The confidence interval is calculated at the specified confidence level; the most common is the 95% confidence level, but sometimes other levels are used, such as 90% or 99%.
The confidence interval of proportions is given by:
π ± z √(π (1-π) /n)
π is the sample proportion.
z is the critical value.
n is the sample size.
For 99% confidence interval the value of z is 2.58
π = 321/650
The confidence interval is given by
=321/650 ± 2.58 √( (321/650) × [ 1 - (321/650) ] ÷ 650)
= (0.493846 ± 0.050594)
=(0.4434 , 0.5443)
=(44.34 % , 54.43 %)
Hence a 99% confidence interval for the population mean of high school students that take the bus to school every day is ci=(44.34%, 54.43%)
<u>Learn more about confidence interval:</u>
brainly.com/question/28052710
# SPJ4
Answer:
13.87
Step-by-step explanation:
Three friends went out to eat dinner the bill came to 35.60. This means that the total bill for the dinner was 35.60.
The original bill was 35.60. If they shared the bill equally, the amount that each of them would pay would be
Total bill / number of friends
It becomes 35.60/3 = 11.87
The three friends also decided to leave a 6.00 tip and it was sent equally. This means that each friend would pay a tip of
6/3 = 2. ( total amount of tip paid divided by the number of friends)
Therefore, the total amount that each has to pay = amount each paid for the bill + amount that each paid for the tip
= 11.87 + 2 = 13.87
