Find mean and variance of the number of ink jet printers

Reference no: EM13138893

a computer store has 50 printers of which 75 are laser printers and 15 are ink jet printers. if a group of 10 printers is chosen at random from the store, find the mean and variance of the number of ink jet printers.

Reference no: EM13138893

Questions Cloud

What is the final temperature : The specific heat of Ti is .523 J/gcelcius. What is the final temperature of 62g of Ti intially at 41celcius after 8.5kj of heat is added?

Conflit management : Think of a conflict you have had with a co-worker where your mind was not open to listening to the other person nor digging in to find out what really mattered as a way of working out a win-win fo both of you. Describe now what you would do diferentl..

Detailed explanation to op-amp : Detailed Explanation to Op-Amp, A certain op-amp has an open-loop voltage gain of 100,000 and a common mode gain of 0.2. Determine the CMRR in dB.

The financial statements of an entity : The financial statements of an entity, with their accompanying schedules and explanatory notes, are the main means by which the users of general purpose financial reports inform themselves as to the operations, financial position, financial stability..

Find mean and variance of the number of ink jet printers : 15 are ink jet printers. if a group of 10 printers is chosen at random from the store, find the mean and variance of the number of ink jet printers.

How many moles of oxygen,o, were in the sample : If 7.50 g of the unknown compound contained 0.250 mol of C and 0.500 mol of H, how many moles of oxygen,O, were in the sample?

What is the ph of the solution : Suppose you have 0.001 M solution of a dye with pka of 7.2. from the color, concentration of protonated form is found to be 0.0002 M. Assume remainder of the dye is in the deprotonated form. What is the pH of the solution?

How many students expect to have heights less in centimeters : Standard deviation of 6.9 centimeters.assuming that the heights are recorded to the nearest half-cm, how many of these students would you expect to have heights less than 160.0 centimeters.

Determine ideal impulse response using inverse discrete-time : Determine ideal impulse response using inverse discrete-time Fourier transform. An ideal low-pass filter is described in the frequency-domain by

User Account

All Pages