Answer:
3.65 ≤ x < 3.75.
Step-by-step explanation:
Lowest value = 3.65 and highest is < 3.75.
3.65 ≤ x < 3.75.
Answer:
155 women must be randomly selected.
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 Z-table as such z has a p-value of
.
That is z with a pvalue of
, so Z = 1.645.
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 population standard deviation is known to be 28 lbs.
This means that 
We want 90% confidence that the sample mean is within 3.7 lbs of the populations mean. How many women must be sampled?
This is n for which M = 3.7. So






Rounding up:
155 women must be randomly selected.
Answer:
a) 23
Step-by-step explanation:
The answer is 93,000,000.
Answer:
A.Y
B.X
C.They become opposite
Step-by-step explanation: A. When you reflect the x - axis you don't change the y - axis B: Same as A C: You multiply them both by -1 basicly