First step : 2(2))+5\2 -2(2))+3\2 =9\2 -7\2 =2\2 =1
Answer:
The average mass of a group of children is 50 kilograms. Todd, who has a mass of 62 kilograms, then joins the group. This raises the average mass of the group to 52 kilograms. How many children were in the original group
Step-by-step explanation:
Answer:
Answer: The reading that is preferred by the majority of students in the samples is: Novels.
Step-by-step explanation:
We are given table of data that represents the reading preferences of 50 students as:Sample# Novels Short Stories Classics ComicBooks Total 1 26 19 1 4 50 2 30 10 3 7 50 3 33 15 1 1 50 4 22 18 2 8 50Clearly from all the 4 samples we could observe that most students like: Novels.and then they love Short stories , after which they love to read Comic books and the least preferred readings is: Classics.
2/3x+4=2/3-2x
2/3x-(-2x)
2/3x+2x
2 2/3x+4=2/3
2/3-4=-3 1/3
2 2/3x=-3 1/3
(3 1/3)/(2 2/3)=1 1/4
x = 1 1/4
y=2/3-2x
y=2/3-2(2/3)
y=2/3-4/3
y=-2/3
The answer is (1 1/4, -2/3)
Answer:
Step-by-step explanation:
We know that the sample size was:
The average was:
The standard deviation was:
The confidence level is
The confidence interval for the mean is:
Looking at the normal table we have to
Therefore the confidence interval for the mean is:
This means that <em>the mean planned spending of all Americans who take long summer vacations in 2009 is between $ 1024.69 and $ 1127.31</em>
