Information about t-statistic

Reference no: EM13107357

Nationwide, the average waiting time until electric utility customer service representative answers a call is 300 seconds per call. The Gigantic Kilowatt Energy Company took a sample of 35 calls and found that, on the average, they answered in 240 seconds per call with a standard deviation of 50. Can the company claim that they are faster than the average utility?

A) No, because -0.20 falls in the critical region

B) Yes, because -7.10 falls in the critical region

C) No, because -1.20 falls in the critical region

D) Yes, because -0.20 falls in the critical region

Reference no: EM13107357

Questions Cloud

What minimum angle relative to the centerline perpendicular : Determine at what minimum angle relative to the centerline perpendicular to the doorway can someone outside the room hear no sound?

Paired t test for blood pressure data : D. The Sunbeam Corporation makes a wide variety of appliances for the home. One product is a digital blood pressure gauge. For obvious reasons, the blood pressure readings made by the monitor need to be accurate.

How many turns must there be in the high voltage end : A long distance power line is to carry 175 megawatts (1.25x10^8W) of alternating current power at distance of 15.0km at a peak voltage of 1.00MV and a frequency of 60Hz.

How abolitionists crusade was success or failure : Do you believe Abolitionists' "crusade" was success or failure? In its own terms? In terms of larger historical events? Must Abolitionists be credited (or blamed) for the Civil War? Describe.

Information about t-statistic : Nationwide, the average waiting time until electric utility customer service representative answers a call is 300 seconds per call. The Gigantic Kilowatt Energy Company took a sample of 35 calls and found that, on the average

What magnetic field would be measured : A beam consisting of 8.22x10^16 electrons/sec passes through a region of vacuum. A) What magnetic field would be measured 1.50cm away from the center of the beam?

Enter the total pressure in kpa minutes after initiation : Total pressure in kPa 10 seconds after initiation of the reaction if initially there was 88.3kPa of pure N 2 O 5 vapor Enter the total pressure in kPa 10 minutes after initiation of the reaction.

Discuss several advantages of linear programming : Discuss several advantages of linear programming; clearly explain the reasons for your choices. Does anyone know a good Healthcare lawsuit that I can do an essay on.

What is the magnitude of the electric field : A square aluminum plate 10.0cm on a side carries an electric charge of -2.88x10^-12C.

User Account

All Pages