If a relation R on a set is a total ordering, then R must also be a partial ordering.

Which of the following is the negation of `if it is May, then it is getting warm in Rochester.’

Suppose a group consists of five males and seven females. How many ways can you select a committee of four members from the group, if the committee is required to have at least two females?

If 1+1=3 then sharks can walk.

Suppose S={2, 4, 5, 7, 9, 11}.   Select all true statements.

∃y∀xP(x,y), where P(x,y) is the statement x+y=0 and domain of x and y are all real numbers.{“version”:”1.1″,”math”:”\exists y\forall xP(x,y),\text{ where }P(x,y)\text{ is the statement } \\x+y=0\text{ and domain of $x$ and $y$ are all real numbers.}”}

Determine the value for the voltage drop Vad. Bboard1(31).png 

A plug-in transformer has a secondary output 9.00 V. How many turns are in its secondary coil, if its input voltage is 120 V and the primary coil has 400 turns?

A voltage drop of 18 volts has been determined on a 460-volt circuit. What percent is the voltage drop?

An online clothing company has consistently seen 25% of their online orders exchanged due to ordering the wrong size.  They want to reduce this proportion by incorporating a new sizing chart into the ordering process.  Before fully launching the chart they try it on a sample of 400 orders.  Out of those 400 orders 80 were exchanged. Using stat key, perform a randomization hypothesis test at the 5% significance level to see if there is enough evidence to conclude the sizing chart would decrease population proportion of orders being exchanged by completing these steps.  Blank 1: Do your best to type in the hypotheses – please also jot them down on your work sheet using good notation. Blank 2:  Give the p-value obtained from stat key.  On your work sheet, provide a sketch of the randomization dotplot so I can see where the p-value comes from. Blank 3: Write you conclusion in context.