Answer:
1.165.
Step-by-step explanation:
We have that to find our 
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of 
.
So it is z with a pvalue of 
, so 
Now, find the margin of error M as such
In which 
is the standard deviation of the population and n is the size of the sample.
In this problem, we have that:
. So
So the correct answer is:
1.165.
Answer:
Step-by-step explanation:
o=-8
-56=7*(-8)=-56
Answer:
1.5 times
Step-by-step explanation:
450=30 minutes
450*2=900=60 minutes
150=15 minutes
150*4=600=60 minutes
900/600=1.5 times
Answer:
Step-by-step explanation:
Answer: 6 hours; the number of hours students watch television when they do not exercise
Step-by-step explanation:
Given: The x-axis is labeled hours spent exercising, and the y-axis is labeled hours spent watching TV .
From the given scatter plot and with repect to the given optionsa , a data point is located at x=0 and y=6, which represents the y intercept of the line of best fit.
Here 6 represents 6 hours; the number of hours students watch television when they do not exercise. [since x=0]
