Answer: Question 1 Researchers are concerned with the decline in the proportion of koalas in the wild who are juveniles, as this will impact the future adult koala population. Historically, the proportion of koalas in South East Queensland who are juveniles is 20%. Use the information in the dataset koalas17.sav to answer the following questions: Using SPSS, calculate the proportion of koalas in the study who are juveniles. Solution Ta...Read More >>
Answer: In order to qualify for a letter sorting job, applicants are given a speed-reading test. The scores are normally distributed with mean of 80 words per minute and standard deviation of 8 words per minute. The variable name is number of words read per minute Unit of measurement is count /min Find the percentage of the applicants who score up to 65. We need to find P(x<65) Hence P(x < 65) = P(z < -1.875...Read More >>
Answers 1a. The appropriate model to represent the variable of interest in the given case would be binomial distribution. The relevant parameters associated with the model are probability of success (p), number of trials (n) and number of successes (x) that are desired. b. The conditions of binomial distribution are satisfied in the given case as indicated below. The given study consists of 20 trials being conducted. There are only tw...Read More >>
Question 1 Use the information in the dataset AIS.sav to answer the following questions. The data set AIS.sav contains information that was collected as part of a comprehensive study on 102 male and 100 female athletes randomly selected from the Australian Institute of Sport. Consider the data set as a random sample of all athletes of the Australian Institute of Sport (AIS). You should use SPSS to calculate the sample statistics you w...Read More >>
Task: Question 1 A professor conducted a study on the effect of the amount of caffeine on anxiety. Of the 60 subjects available for the study, 20 were randomly assigned to Group 1 (giving 2 cups of decaffeinated coffee with 0mg caffeine), another 20 were randomly assigned to Group 2 (giving 2 cups of coffee with 2mg caffeine), and the remaining 20 were assigned to Group 3 (giving 2 cups of coffee with 6mg caffeine). After 30 minutes of consump...Read More >>
In-text: ((John, 2006))
Your Bibliography: John, R. A. (2006). Mathematical Statistics and Data Analysis. Journal of Statistical Computing, 42-53.
In-text: ((Kerby, 2017))
Your Bibliography: Kerby, D. S. (2017). Comparing Two Samples from an Individual Likert Question. Journal of Statistical Theory and Practice, 56-66.
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