Answer:
b. the sample standard deviation is used to estimate the population standard deviation.
Correct since that's the best approximation in order to use the t distribution to estimate the mean
Step-by-step explanation:
For this problem let's analyze the possible options:
a. the population has a mean of less than 30.
False since the mean can be any value and not makes sense
b. the sample standard deviation is used to estimate the population standard deviation.
Correct since that's the best approximation in order to use the t distribution to estimate the mean
c. the variance of the population is known.
False if the variance is know we can use the z distribution for the confidence interval and is not neccessary the t distribution
d. the mean of the population is unknown.
False we create the confidence interval since we don't know the true mean beacuse if we know the mean we don't need to create an interval
Answer: 1.8
<u>Step-by-step explanation:</u>
Answer:
See Explanation
Step-by-step explanation:
Given
New function:
We can assume the parent function to be:
The new function can be represented as:
Where
A = Vertical stretch factor
B = Period
C = Right shift
By comparison:
to
Solve for B
Using the calculated values of This implies that, the following transformations occur on the parent function:
- <em>Vertically stretched by </em><em />
- <em>Horizontally compressed by </em><em />
- <em>Right shifted by </em><em />
Answer:
is the last one
Step-by-step explanation:
the line is dotted and shaded above
Answer:
Step-by-step explanation:
times in the y+9 and y+7 and get y squared + 16x+ 63+80.