Mathematics, 07.03.2020 04:37 alyssabailey
According to a recent Current Population Reports, the population distribution of number of years of education for self-employed individuals in the United States has a mean of 13.6 and a standard deviation of 3.0. (a) Find the mean and standard deviation of the sampling distribution of x^^\_ for a random sample of size n = 100. x^^\_ = x^^\_ = (b) Repeat (a) for n = 400. x^^\_ = x^^\_ = (c) Which of the following most closely describes the effect of increasing sample size n on the sampling distribution of sample mean? The mean of the sampling distribution stays the same, but the standard deviation decreases. The mean of the sampling distribution stays the same, but the standard deviation increases. Both the mean and the standard deviation of the sampling distribution decrease. Both the mean and the standard deviation of the sampling distribution increase.
Answers: 2
Mathematics, 21.06.2019 13:30
The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).
Answers: 1
Mathematics, 21.06.2019 18:30
Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?
Answers: 1
Mathematics, 21.06.2019 22:30
Which term below correctly completes the following sentence? if a function has a vertical asymptote at a certain x value, then the function is what at that value
Answers: 1
According to a recent Current Population Reports, the population distribution of number of years of...
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