Suppose that a customer service center claims that the telephone calls it receives last 114 seconds on average, with a standard deviation of 9 second. if you took a sample of 324 telephone calls, which of the following mean times would be within the 95% confidence interval

Determine the number of outcomes in the event. decide whether the event is a simple event or not. upper a computer is used to select randomly a number between 1 and 9 comma inclusive. event upper b is selecting a number greater than 4. event upper b has nothing outcome(s). is the event a simple event? (yes or no) because event upper b has (fewer than, exactly, more than) one outcome.

Suppose that in 2008 , 840,800 citizens died of a certain disease assuming the population of teh country is 399 miliion, what is the mortality rate in units of deaths per 100,000 people?

Rationalize the denominator- 12x/√x-10