Answer:
C. two crashes in two years
Explanation:
The constructed interval for the rating of the ice cream mango and cotton candy is; C: (-1.4, 2.6).
<h3>What is the t-interval?</h3>
When the sample size is small and the population standard deviation is unknown, then we will have to say that is when the t-interval is very useful.
Now, the z-interval for calculating confidence intervals becomes less reliable when the sample size is less than 30 i.e very small.
Now, since Mango the greater sample mean rating, and since each person rated the flavor on a numerical scale from 1 to 5, then we can say that the correct option is C; (-1.4, 2.6).
Read more about t-interval at; brainly.com/question/9898168
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Answer:
a. <em>Independent - </em>age; <em>Dependent - </em>intelligence
b. Cross-sectional
Explanation:
Scientific experiments label the variables that they employ in two ways: dependent and independent. Independent variables are those that are changed or manipulated by the researchers. In this case, the researchers are exercising control over the variable of age by selecting a particular type of people. This also means that the researchers believe this variable to have a direct effect on the dependent variable.
On the other hand, dependent variable refers to the variable being tested and measured. It receives this name because the variable is "dependent" on the independent variable. In this case, intelligence is the variable that is believed to depend on age.
Finally, this is also an example of a cross-sectional study. Cross-sectional studies interview different samples of people at a particular point in time. This allows us to have a snapshot of a group at a particular moment. This is different from longitudinal studies, which follow the same sample of people over a long period of time.
Answer:
woodwind
Explanation: the instrument is a sixholed flute therefore it would be in the woodwind family along with the flute,clarinet, ect.
