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Read the case studies below and choose the appropriate correlation or regression procedure. Then, using the Correlation and Regression Data Set, run the appropriate correlation or regression procedure, analyze the data, and report the results in a properly formatted APA Results section. Be sure to include the following elements in the Results section: 1. The assumption tests and their results (include graphs if you used them) 2. An adequate report of the descriptive statistics 3. The null hypothesis 4. The results of the statistical procedure 5. The decision regarding the null hypothesis For the purpose of this assignment, do not transform or change any variables if assumptions are not met. Conduct and report the most appropriate parametric procedure; simply note violations. Submit this assignment in a Word document by the end of Module/Week 6.
Case Study 1 A fifth grade science teacher wants to know if there is a relationship between final exam scores and overall course points after adjusting for a quiz score. (Hint: In order to be successful, be sure to include a scatterplot to evaluate the various assumptions).
Case Study 2 The assistant principal wants to know if students' cumulative GPAs on an 8 point scale can predict students' final exam grades in their fifth grade science class. He wants to predict the final exam score of a student who has a GPA of 8.0. (In order to be successful, be sure to include a prediction equation, an APA-style regression table, and an APA-style scatterplot).
At the .02 significance level can we conclude that the mean time to correcting a shipment is less than 10 minutes? Do the following: Compute the value of the test statistic.
Assembly line from which to observe the work habits of the workers on the line. what is the probability that the point she selects within 25 feet of the end of the line?
Identify and justify which type of sampling (random, stratified, systematic, cluster, convenience) is used in the following examples.
assume that iq scores are normally distributed with a standard deviation of 11 points and a mean of 100 points. if 140
This sample is 500 so the distribution of the sample means will be normal, no matter what the shape of the actual distribution of dollar losses.
a population of 1000 voters contains 330 republicans 620 democrats and 50 independents and members of other parties. a
Ten students in a graduate program were randomly selected. Their grade point averages (GPAs) when they entered the program were between 3.5 and 4.0.
two friends decide to go to the track and place some bets. one friend remarks that in an upcoming race the number 8
for each of the following parts indicate whether we would generally expect the performance of a flexible statistical
A sample of 100 orders revealed that 82 were delivered within the promised time. At the 0.10 significance level, can we conclude that less than 90% of the orders are delivered in less than 10 minutes?
find the following probabilities for a standard normal random variable z. note round your answers to four decimal
For this process what is the proportion of shafts with a diameter between 19.89 mm and 20.00 mm?
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