Pulse Rates. In Exercises 13–24, use the data in the table bel...

Question

Pulse Rates. In Exercises 13–24, use the data in the table below for pulse rates of adult males and females (based on Data Set 1 “Body Data” in Appendix B). Hint: Draw a graph in each case.

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Find the probability that a male has a pulse rate less than 60 beats per minute.

Accepted Answer

Welcome back, everyone. Find the probability that a student scores less than 70 on a test, given that the mean square is 80 and the standard deviation is 15. A 0.2514, B is 0.1587, C 0.4332, and D 0.2119. So in this problem, we're given the value of the random variable X. It says 70. We also given the mean square mu of 80. And the standard deviation of 15, we want to identify the probability of X being less than 70, right? Now, how do we solve? Well, given the standard normal distribution, we first of all want to standardize X. We want to identify the probability. Of C being less than some value. So to standardize, we're essentially going to identify the Z score, and we're going to use the formula Z equals x minus mu divided by sigma, our standard deviation. Our X is 70. Our meal is 80. And our sigma is 15. So this means that P of X being less than 70. In a standard normal distribution is P of Z is less than -0.67, right? So we have successfully standardized the X value into its Z score, and now what we need to do is simply use the table or the calculator that allows us to identify the area under the bell-shaped curve. So essentially we end up with 0.2514. This is P of Z being less than -0.67. And the correct answer to this problem corresponds to the answer choice A. Thank you for watching.

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Pulse Rates. In Exercises 13–24, use the data in the table below for pulse rates of adult males and females (based on Data Set 1 “Body Data” in Appendix B). Hint: Draw a graph in each case.

Find the probability that a male has a pulse rate less than 60 beats per minute.

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Pulse Rates. In Exercises 13–24, use the data in the table below for pulse rates of adult males and females (based on Data Set 1 “Body Data” in Appendix B). Hint: Draw a graph in each case.Find the probability that a male has a pulse rate less than 60 beats per minute.

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Pulse Rates. In Exercises 13–24, use the data in the table below for pulse rates of adult males and females (based on Data Set 1 “Body Data” in Appendix B). Hint: Draw a graph in each case.

Find the probability that a male has a pulse rate less than 60 beats per minute.