Mathematics, 21.04.2020 02:22 amyeileen
In a study of 250 adults, the average heart rate was 70 beats per minute. Assume the population of heart rates is known to be approximately normal, with a standard deviation of 12 beats per minute. What does a margin of error of 2 for the 98% confidence interval of the average beats per minute mean?
There is a 1% chance that the population mean is less than 70 beats per minute. There is a 1% chance that the population mean is more than 70 beats per minute. There is a 99% chance that the population mean is between 58 and 82 beats per minute.
There is a 99% chance that the population mean is between 68 and 72 beats per minute.
Answers: 3
Mathematics, 21.06.2019 15:00
What are the relative frequencies to the nearest hundredth of the columns of the two-way table?
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Mathematics, 21.06.2019 18:00
Solve 2^x=32 and rewrite this equation in a logarithmic form
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Mathematics, 21.06.2019 20:30
Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function.a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.
Answers: 1
In a study of 250 adults, the average heart rate was 70 beats per minute. Assume the population of h...
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