Reference no: EM131055871
1. A professor measured the time (in seconds) required to catch a falling meter stick for 19 randomly selected students' dominant and non-dominant hand. The professor claims that the reaction time in an individual's dominant hand is less than the reaction time in their non-dominant hand. At the 0.05 significance level, test the claim that the reaction time in an individual's dominant hand is less than the reaction time in their non-dominant hand. (The results can be found in the first two columns of the Excel file).
a. If we conduct statistical inference for this problem, what is (are) the parameter(s) we are conducting inference on? (You may state your answer in words or symbols).
b. Depending on your answer to part (a), construct one or two probability plots and one or two boxplots to visualize the distribution(s) of your sample data. If you construct two probability plots and two boxplots, please construct two separate Minitab probability plots and one Minitab boxplot displaying both boxes on the same graph. Copy and paste these graphs into your assignment. Below the graphs, answer the following questions.
i. Are there any major deviations from normality?
ii. Are there any outliers present?
iii. Is it appropriate to conduct statistical inference procedures, why or why not?
c. At the 0.05 significance level, test the claim that the reaction time in an individual's dominant hand is less than the reaction time in their non-dominant hand.
i. State the null and alternative hypotheses.
ii. State the significance level for this problem.
iii. Calculate the test statistic.
iv. Calculate the P-value and include the probability notation statement.
v. State whether you reject or do not reject the null hypothesis.
vi. State your conclusion in context of the problem (i.e. interpret your results).
d. Construct a 97.5% confidence interval for the above data. Interpret the confidence interval as we learned in class.
|
Average percentage of aluminum oxide
: Does the data provide sufficient information to indicate that there is a difference in the average percentage of aluminum oxide at the two sites? Test at the 5% level of significance
|
|
Question regarding the feelings of alienation
: As part of a new prevention program, a clinical psychologist wants to see whether feelings of alienation differ as a function of immigration status in a local high school.
|
|
Create resource gantt chart
: Create Responsibility Matrix. Create Resource Gantt Chart. Create Resources Loading Chart.
|
|
Estimate produce sales for upcoming year
: The manger plugs their data into excel and without plotting comes up with the equation for the regression line. Using this equation they estimate the produce sales for the upcoming year. What mistakes did they make? Explain.
|
|
What is the parameter we are conducting inference on
: If we conduct statistical inference for this problem, what is (are) the parameter(s) we are conducting inference on? (You may state your answer in words or symbols)
|
|
Relation between class rank and popularity among peers
: A researcher wants to examine the relation between class rank and popularity among peers. Class rank is provided by the school and includes each student's rank in order. The researcher assesses popularity using a likability measure that provides s..
|
|
Population of all gasoline mileages
: Suppose that the population of all gasoline mileages is normally distributed with mean µ = 31.5 mpg and standard deviation σ = 0.8 mpg. Let y denote a mileage randomly selected from this population. Find the probabilities:
|
|
Probability that a female customer
: Furthermore, the data shows that 35% of the females who visited his store purchased a cell phone, while 20% of the males who visited his store purchased a cell phone. What is the probability that a female customer will purchase a cell phone?
|
|
Format and structure appropriate to the rhetorical situation
: This assignment is intended to help you reflect in very specific detail on how your writing, critical thinking, critical reading, and visual literacy skills have developed over the course of the semester. Your audience for this project is me, your..
|