Answer:
15
Step-by-step explanation:
Please give me brainliest :)
Answer:
2 ways
Step-by-step explanation:
The best way to do this is to fix the position of the stranger and then arrange the two identical twins
The number of ways of knowing where the stranger will seat is 1! ways = 1 way
The number of ways of arranging the two identical twins is 2! ways = 2*1 = 2 ways
The number of sitting arrangements = 1 * 2 = 2 ways
Answer:
The 98% confidence interval for the mean amount spent on their child's last birthday gift is between $40.98 and $43.02.
Step-by-step explanation:
We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 24 - 1 = 23
98% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 23 degrees of freedom(y-axis) and a confidence level of
. So we have T = 2.5
The margin of error is:

In which s is the standard deviation of the sample and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 42 - 1.02 = $40.98.
The upper end of the interval is the sample mean added to M. So it is 42 + 1.02 = $43.02.
The 98% confidence interval for the mean amount spent on their child's last birthday gift is between $40.98 and $43.02.
Answer:
The First one
Step-by-step explanation:
Just divide r/s and substitute x by 6.
83,000,023,007 is the answer.