Answer:
b =51
Step-by-step explanation:
A straight line is 180 degrees
The three angles add to 180 degrees
90+39+b = 180
Combine like terms
129+b+180
Subtract 129 from each side
129+b-129 = 180-129
b =51
Answer:
it is S
Step-by-step explanation:
because it is being reflected on the X-axis
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:
Data warehouse
Step-by-step explanation:
Data warehouse is a technology that combines data from one or more sources so it can be compared for making business decisions.
Moreover, Data warehouse can be explained as a technology that combines from one or more sources so it can be prepared for making business decisions. A data warehouse is constructed by Integrating data from multiple heterogeneous sources that support analytical reporting, and decision making.
11.17 rows, because if you divide 134 with 12, you get 11.166, if you round that, you get 11.17, so basically only (11 rows)