Michael K.

Every reference I find says that they are essentially the same, which we all know really means that they are not the same, but different only by a some small amount. They also like to say that UT1... more

I mean, we experience tides here on earth because of combined effect of gravitational field of moon and sun. So I thought that tides could also occur on other planets. Let us consider Neptune where... more

Plate tectonics effectively rubbished the theory of geophysical global cooling as a means of explaining many surface features on the Earth. However, [this... more

A media rating company that publishes television ratings uses a random sample of 1600 households and _nds that 20% watched a particular show in a given week. What is the approximate margin of error?

About % of the area under the curve of the standard normal distribution is between z=−3.045 and z=3.045 (or within 3.045 standard deviations of the mean).

A study was conducted on students from a particular high school over the last 8 years. The following information was found regarding standardized tests used for college admitance. Scores on the SAT... more

I've read in the past that extreme precipitation levels may have an effect on seismic activity, and wondered if anyone has ever analysed the La Nina / El Nino cycles to see if there are any... more

Ben bought two identical plants and placed them on opposite ends of his garden. After several days, he noticed that one grew taller than the other. Ben wants to conduct an experiment to see why one... more

A company produces a special new type of TV. The company has fixed costs of ​483,000​, and it costs ​$1100 to produce each TV. The company projects that if it charges a price of ​$2400 for the​ TV,... more

A person's blood glucose level and diabetes are closely related. Let x be a random variable measured in milligrams of glucose per deciliter (1/10 of a liter) of blood. Suppose that after... more

what is the atomic mass of the most common isotope of silver as indicated by the periodic table? why isnt the atomic weight listed on the periodic table an integer?