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 having a tree nut allergy and the test being positive?
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The below stem and leaf plot states the sepal (a part of the…
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?
Below is a contingency table from the results of the 2012 Ge…
Below is a contingency table from the results of the 2012 General Social Survey. Respondents were asked to identify how much they understood issues facing the country. Responses were broken down by gender. 1:None 2:A little 3:Some 4:Quite a Bit 5:A great deal Male 14 51 140 89 23 Female 16 69 138 58 16 What is the conditional probability that someone knows “a little” given that they were male?
A survey was conducted of college students in the US. They w…
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 58 inch tall respondent?
In the May 1, 2014 article, “For Many, Mobile Technology Inc…
In the May 1, 2014 article, “For Many, Mobile Technology Increasing Retail Shopping, Young Adults More Likely To Say Mobile Tech Increasing Retail Shopping” by Jeffrey M Jones, the results of a recent poll about Americans buying habits. Here is a quote from that article. “Results for this Gallup poll are based on telephone interviews conducted March 21-23, 2014, on the Gallup Daily tracking survey, with a random sample of 1,505 adults, aged 18 and older living in all 50 U.S. States and the District of Columbia.” What aspect of statistics is this describing?
In the Spring of 2017, a sample of 102 homes for sale in Gai…
In the Spring of 2017, a sample of 102 homes for sale in Gainesville was collected. The sale price and square footage of the homes were recorded. The least squares regression equation was price = -58857+162.9*foot For one house, the square footage was 952 and the price was 149900 dollars. Find the residual.
In the Spring of 2017, a sample of 102 homes for sale in Gai…
In the Spring of 2017, a sample of 102 homes for sale in Gainesville was collected. The sale price and square footage of the homes were recorded. The least squares regression equation was price = -58857+162.9*foot For one house, the square footage was 2424 and the price was 299900 dollars. Find the residual.
Suppose that you had a random number generator that randomly…
Suppose that you had a random number generator that randomly selected values between 0 and 1. Assume that each number is equally likely between 0 and 1 – including decimals. What is the probability that you would select a value between 0.25 and 0.5?
Below is a data set of the number of male students enrolled…
Below is a data set of the number of male students enrolled in M.S. program (Fall) in the C.S. department at the University of Florida in the last 7 years: 72,48,46,27,58,63,71 What is the mean?
A survey was conducted of college students in the US. They…
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?