A random number generator generates a number between 0 and 1. Assume that each number is equally likely between 0 and 1 – including decimals. What is the probability that a number is between 0 and 0.6?

The below stem and leaf plot states the length of eruptions (mins) for Old Faithful for a sample of 272 eruptions.    What is the minimum eruption length?

Suppose that in a unfair coin, the probability that “Head” occurs during a toss is 35%. Assume that we toss the coin 6 times, independently of each. What is the expected number of tosses that “Head” occurs?

Tests for allergies can be done in multiple ways. One way is through a blood test. ImmunoCAP is one of such tests. About 0.5% of adults have tree nut allergies at some level of severity. The test correctly identifies 94% of the time adults with a tree nut allergy and correctly identifies those without tree nut allergies 93% of the time.  What is the probability of an adult not having a tree nut allergy and the test being negative?

In the summer of 2011, the Chicago libraries recorded the number of participants per branch of the library versus the number of books read from that branch.  They wanted to predict the number of books read at each branch based on the number of participants in the summer program.  The least squares regression equation was  books read = -657.0 +24.74 participants For one branch of the library the number of participants was 1053. The number of books read was 25803.  Find the residual. 

The per capita CO2 emissions (in metric tons) of 28 countries in the EU were recorded. Below is a stem and leaf plot of these values. What is the minimum CO2 emission?

Below is a table from the General Social Survey. In 1986, respondents were asked how much they agreed or disagreed with the following statement. “Welfare helps prevent hunger and starvation”.   Male Female Row Total Strongly Agree 96 132 228 Agree 455 615 1070 Disagree 58 78 136 Strongly Disagree 9 17 26 Total 618 842 1460   Given that the respondent strongly disagrees, what is the probability that the respondent is male?

  A survey was conducted of college students in the US. They were asked to give their own height as well as the height that they would like their mate to be. Below is the least squares regression output for this data. The output below was conducted on only the male respondents. What is the predicted height for a mate of a 62 inch tall respondent?

The below stem and leaf plot states the sepal (a part of the flower – usually green) width(cm) of a sample of 150 irises.     What is the minimum sepal width?

The following is an excerpt from a New York Times article; Naps May Be Good for a Baby’s Learning by Nicholas Bakalar. The article appeared on January 12th at 3pm. ” Researchers tested 6- and 12-month old babies using a puppet with a removable mitten containing a bell. The experimenter engaged the child, then removed the mitten and shook it three times to demonstrate its sound and movement, and replaced the mitten on the puppet’s hand. She repeated the procedure several times. The study was published in Proceedings of the National Academy of Sciences.  On average, the infants napped for 106 minutes during the ensuing four hours. But 21 of the 40 babies slept 30 minutes or less. The next day, after all the infants had slept soundly for the night, the researchers presented the materials again to see if the infant would remember and try to reproduce the mitten procedure. The babies who had taken long naps after the teaching session were significantly better at reproducing the procedure than those who napped less than 30 minutes. ”   Are the “40 babies” in this study- the sample or the population?