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Identify the type of sampling used.  A student at SMC wants to determine the proportion of students who plan to transfer to a UC.  They poll a sample of their friends. 

A company that bags apples for sale determines that the mean weight of an apple is 85 grams with a standard deviation of [x] grams.  If the company determines that apples that weigh less than [y] standard deviations below the mean weight (in grams) are not suitable for sale, below what weight are the apples unsuitable?  Enter your response below rounded to one decimal place. 

The following data represent the prices of a round trip ticket from Los Angeles to Paris over spring break.  Use this information to find the indicated values.  Round the mean and standard deviation to the nearest whole number.  Give the quartiles to the nearest cent. $1352     $810     $919     $915     $1030     $915     $926     $1147     $789     $919     $1234    $1267      $1295     $874     $665 Find the following.  Summary Statistics What is the mean? [answer1] What is the median? [answer2] What is the standard deviation? [answer3] What is the first quartile?  [answer4] What is the is the 3rd quartile?  [answer5] Save these results for use in the next three questions. 

If you know that a data set is left-skewed, which of the following would likely be true?

The boxplot below gives the scores, in points, on a recent math exam in a class with 60 students. Use the graph to answer the following questions.  1. Approximately what percentage of students scored at least 90 points on the exam? [ans1] 2. What is the IQR for the scores on the math test?  [ans2] 3. How many of the students scored between 66 and 78 on the test?  [ans3]  

  A sample of 100 15-year old girls and 120 15-year old boys were measured for height in inches and the data summarized in the boxplots above.  Answer each of the following based on these graphs.   1. 75% of the girls were at least _________inches tall. [q1]   2. What percentage of the boys were less than 68 inches tall?  [q2]   3. The IQR (interquartile range) for the girls was _________. [q3]

Determine whether the underlined value represents a parameter or a statistic and why.  The mean height of all of the players on a little league team is 54.85 inches. 

Identify the level of measurement (nominal, ordinal, interval, ratio) for each of the following variables.  a. Temperature of a cup of coffee [cof] b. Height of a 6-year old in inches [hei] c. Color of a car [car] d. Size of a rental car: subcompact, compact, standard, full-size [size]

Classify each of the following quantitative variables as either continuous or discrete.  a. Number of goals scored in a soccer game.  [answera] b. Number of visitors to Disneyland in a day.  [answerb]

This view holds that the best predictor of future criminality is past criminality.​