Answer:
Becky must leave at 12:20pm to arrive on time
Step-by-step explanation:
12:45-25=12:20
I don't know but I think it is (3.5,6.7) and the nature I haven't learned that yet
Answer:
The critical value for a 98% CI is z=2.33.
The 98% confidence interval for the mean is (187.76, 194.84).
Step-by-step explanation:
We have to develop a 98% confidence interval for the mean number of minutes per day that children between the age of 6 and 18 spend watching television per day.
We know the standard deveiation of the population (σ=21.5 min.).
The sample mean is 191.3 minutes, with a sample size n=200.
The z-value for a 98% CI is z=2.33, from the table of the standard normal distribution.
The margin of error is:

With this margin of error, we can calculate the lower and upper bounds of the CI:

The 98% confidence interval for the mean is (187.76, 194.84).
If I am not mistaken it is going to be the second one, 5^1/6
17 + 3y = 7x
3y = 7x - 17
y = 7/3x - 17/3
= 7/3