I’m not sure but if it’s LCM it’s 60 if it’s GCF it’s 1
B. Undercoverage? Because the survey was only given to a certain group of people
<span>a. verify that the conditions for computing a confidence interval are met in this case.
The formula for computing the CI interval is given by:
x_bar+/-z (s/</span>√n<span>)
since:
x_bar=6.67
s=1.88
n=15
The conditions are met because we have all the values necessary for computing CI.
b] </span><span> compute and interpret a 95% confidence interval for the mean number of hours the students at this school sleep each night.
The value of z corresponding to 95% CI is 1.96
thus the 95% CI will be:
6.67+/-1.96(1.88/</span>√15<span>)
=6.67+/-1.96(0.4854)
=6.67+/-0.9514</span>
<h2>
Explanation:</h2><h2>
</h2>
Here we know that an internet service provider is implementing a new program based on the number of connected devices in each household. Currently, customers are charged a flat rate of $175 per month. Assuming just a month, we can write a constant equation given by the form:
The new plan would charge a flat rate of $94 plus an additional $4.50 per device connected to the network. So the linear equation is:
So we need to find the number of devices, x, for which the cost of the new plan is less than the cost of the current plan. By using inequalities:
<em>So you should connect less than 18 devices in a month in order for the cost of the new plan to be less than the cost of the current plan.</em>