Identify the following functional groups(s).

A group of nine college students were asked how many hours they slept the previous night. The number of hours they slept are:      7     6     7.25     8.5     5      7      6.75     6    9 [a].  Find the mean.  Round to two decimal places. [b].  Find the median.  Round to two decimal places.    [c].  The standard deviation of the hours slept is 1.24 hours. What is the z-score for the student who slept 7 hours?  Round to two decimal places.      

In a particular suburb, 30% of the households have installed electronic security systems.  If a household is selected at random, what is the probability that this household has not installed a security system? 

The time-dependent deformation of clayey soil is explained using a classic model of a water filled cylinder with a spring at its center. In this example, the spring represents what element of the three-phase model?

The blows per six inches for an SPT test results are reported by your drillers as follows: (A) 50/3″, WOH (B) WOH, 50/3″ (C) 49, 48, WOH (D) 36, WOH You immediately note that one of the SPT N values reported is incorrect. That incorrect SPT N value is A, B, C or D?

Is the reaction represented by the energy diagram below exothermic or endothermic?  

Two data sets yield the following standard deviations.  Which data set is more consistent?   Data set 1:  standard deviation = 5.2                       Data set 2:  standard deviation = 6.1

Adult Americans (18 and older) were asked whether they use social media regularly. The following table is based on the results of the survey. What is the probability the person does not use social media given that they were between the ages 18 and 34?  Round your answer to three decimal places.   18-34 35-44 45-54 55+ Use social media 117 89 83 49 Do not use social media 33 36 57 66  

What is the oxidation state of II?

A footing has an ultimate bearing capacity of 9,000 psf. Assuming the footing is embedded 3 feet deep in a soil with a moist unit weight of 100 pcf. The gross allowable and net allowable bearing pressures will be? Ensure you utilize the standard bearing capacity for a shallow foundation.