Answer and Step-by-step explanation:
<span>Given that A
dataset shows that, on average, smokers do not live as long as
nonsmokers and heavy smokers do not live as long as light smokers.
If
you compute the least squares line for y = age at time of death and x =
number of packets per day typically smoked, you will notice that as the number of packets per day a person smokes increases, the age at time of death of the person decreases.
Thus, the graph wil have a negative slope.
Therefore, the slope of your
regression line will be less than 0.</span>
Answer:
9
Step-by-step explanation:
The observed results would be very unlikely if the alternative hypothesis were true.
What does the alternative hypothesis mean?
A statement used in experiments using statistical inference is known as the alternative hypothesis. It is indicated by Ha or H1 and runs counter to the null hypothesis.
Alternatively, it is only a null-free option, as we can also state. An alternative theory is a claim that a researcher is testing in a hypothesis test.
What is an illustration of a different hypothesis?
Just like the null, the alternative hypothesis is an option. For instance, if your null is "I'm going to win up to $1,000" and your alternate is "I'm going to win $1,000 or more," you're essentially determining whether there is sufficient variance in the alternate hypothesis to allow you to reject the null hypothesis.
Learn more about alternative hypothesis
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Answer: C.
Not symmetric; not bell-shaped
Step-by-step explanation:
Data is mainly right skewed. In simpler terms the data has more if a "tail" on the right side while most of the data is on the left. If you were to trace a line over each last dot (the one's at the top) all the way to the last point. You would see that it does not make a "bell-shape" but more of the shape of an arrow pointing left. If it were symmetrical it would have more of a balanced amount of data points on it's opposite side which would make the shape either look like a triangle or a bell shape. Hope that helps.
