Answer:
Step-by-step explanation:
Which fraction is bigger? or
If you look closely the fraction , it looks big but it actually isn't.
The fraction that is bigger is . This is because 75 is a big number and its only 27 out of the 75. In , it's not as big as 75. So compare 18 and 27 and 75 and 55. 75 is 20 more than 55. The number 27 is only 9 bigger than 18.
That's why your answer is
Hope this helps!
Answer:
44
Step-by-step explanation:
Answer:
The 90% confidence interval for the population mean is (300.78, 315.22).
Step-by-step explanation:
We have to calculate a 90% confidence interval for the mean.
The population standard deviation is know and is σ=17.
The sample mean is M=308.
The sample size is N=15.
As σ is known, the standard error of the mean (σM) is calculated as:
The z-value for a 90% confidence interval is z=1.645.
The margin of error (MOE) can be calculated as:
Then, the lower and upper bounds of the confidence interval are:
The 90% confidence interval for the population mean is (300.78, 315.22).
Answer:432
Step-by-step explanation: 12·3=x
36·12=x
x=432
In an hour the distance will be 27+3=30 miles
27*x+3*x=41
30*x= 41
x= 41/30 hours
x= 1,3(6) hours