Author: Anonymous

You can upload any work or scratch paper here, please make sure your scratch is labeled by question, if I cannot identify which problem the work is for I will not use the scratch.  It is best if you use a scanning app, I recommend you use  Genius Scan or Camscanner and note you can also upload your scratch in the exam module under Exam 1 scratch upload.  If none of that works you can email me your scratch paper within 10 minutes of the exam ending as well.

If the weight of a dog is 34.5 pounds and it corresponds to P57 interpret this value in a sentence.

You need to find a sample of 20 people for a school project and the sample should represent the whole school.  You randomly pick 20 students from your statistics class. 

The above boxplot describes the square footage of one bedroom apartments that were rented over the past 12 months.  Answer the following: a.  Approximately what percentage of one bedroom apartments rented in the past 12 months were less than 1700 square feet? [answer1] b.  Approximately what percentage of one bedroom apartments rented in the past 12 months were between 1200 and 1600 square feet? [answer2] c.  What is the cutoff for the lowest 25% of square footages of one bedroom apartments? [answer3] d.  What is the approximate interquartile range? [answer4]

Identify if the following variables are Continuous or Discrete 1. The number of times a person has been married? [answer1] 2. The high temperature today. [answer2]

If the [answer1] is larger than [answer2] then shape of the distribution is right skewed (also called positive skewed)

Use the diagram below to answer the questions below. Boxplot of the lifetime (hours) of piece of machinery for two different manufactures.  a.  What is the interquartile range for Manufacturer A. [answer1] b. Which manufacturer has a lower median value? [answer2] c. Which manufacturer has more variation in their hours? [answer3] d. What percentage of the hours falls above 3500 hours for Manufacturer B? [answer4]  

A study in which the researcher knows which subjects got a treatment but the subjects do not know who got the treatment is called a blind, double blind or placebo effect?

The weight of a human heart is adults males has a bell-shaped distribution with a mean of 300 grams and a standard deviation of 35 grams.  Use the empirical rule to determine the following.  Write your answers in full sentences and use the appropriate units. a.   About 68% of adult male human hearts will weigh between what weights?  b.   What percentage of human hearts weigh less than 230 grams? c. What percentage of human hearts weigh between 230 grams and 405 grams?  

According to Chebyshev’s Theorem what percentage of the data set is NOT within 2 standard deviations of the mean?