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For the following questions respect APA 7th edition for references if applicable
For the following questions respect APA 7th edition for references if applicable.
Normal curve and probability
1. The average man weighs 170 pounds (with a standard deviation of 7.5). Hockey player Sidney Crosby of the Pittsburgh Penguins, who scored 103 points in the 2008-09 season, led his team to the Stanley Cup and weighs 193 pounds.
How does Sidney Crosby compare to his band?
(Be precise and complete in your answer: Present all your calculations, present its position in words and on a graph, and present all the percentages associated with its position).
2. In the NHL, the average player weight is 202 pounds (with a standard deviation of 6.4 pounds).
Where does Sidney fit into this group?
(Be precise and complete in your answer: Present all your calculations, present its position in words and on a graph, and present all the percentages associated with its position).
3. What conclusion can you draw from the previous questions?
Go to the discussion forum and share your findings. We’ll come back to your observations later in the course.
The sampling distributions
1. The social skills level of a four-year-old child measured using a standardized scale is 20.9 (standard deviation = 3.2) and is normally distributed. A community health centre hires you to examine the social skills of a group of children with autism. In fact, the centre’s leaders want to know where this group of 15 four-year-old autistic children stands with an average score of 19.5.
2. All else being equal, what would happen to score z and your conclusion if the group were instead composed of 50 children?
Correlation
1. Determine the meaning (positive or negative) of each graph. Then, rank them in ascending order (from weak to strong) according to their strength.
Note: Remember that there are mathematical formulas that allow us to determine the exact strength of the relationship. We base our judgment here on a cloud of points, in order to introduce you to the concept of relationship and allow you to understand it.
a) See document (image of a graph)
b) See document (image of a graph)
c) see document (image of a graph)
d) see document (image of a graph)
2. If you see a graph like this, what will you conclude?
Does it appear to be a relationship? What happens when people turn 18?
a) See document for image of question graph.
3. Does Nutella help concentration in the classroom? To answer this question, we interviewed students in a Grade 8 class. We started the interview by asking them how many times a week they ate Nutella and we proceeded with 20 questions about the material learned during the week. The results are in the table below.
a)Make a scatter graph for this research question.
b)Do these two variables appear to be related? If so, how would you describe them? If not, explain what allows you to say there is no relationship.
c)Calculate the Pearson correlation.
– See document to help complete the question.
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