Answer:
The 95 percent confidence interval for the population mean is between 14.736 tons and 16.864 tons.
Step-by-step explanation:
We have the population's standard deviation, so we can find the normal confidence interval.
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.
The lower end of the interval is the sample mean subtracted by M. So it is 15.8 - 1.064 = 14.736 tons
The upper end of the interval is the sample mean added to M. So it is 15.8 + 1.064 = 16.864 tons
The 95 percent confidence interval for the population mean is between 14.736 tons and 16.864 tons.
Complementary angels are two angles that equal 90 when added so S degrees + Z degree = 90 degrees or 50 degree + 40 degree = 90 so forth 4B in comments
Let as consider, we need to find the fixed fee.
Given:
Cost of each ticket = $18
Number of tickets = 5
Total cost = $93
To find:
The fixed fee.
Solution:
Let x be the fixed fee..
Cost of 1 ticket = $18
Cost of 5 ticket = $(5 × 18)
= $90
Total cost 5 tickets = Fixed fee + Cost of 5 tickets
Therefore, the fixed fee is $3.
Correct answer is D
Would appreciate brainliest answer :)
Answer:
Hope this helps!!
Step-by-step explanation:
4 = 48
6 = 72
2 
= 30
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