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chichulita
Group Title
Estimating the Standard Deviation: Veterinary Science The resting heart rate
for an adult horse should average about 45 beats per minute with a (95% of
data) range from 22 to 70 beats per minute, based on information from The
Merck Veterinary Manual (a classic reference used in most veterinary colleges).
Let x be a random variable that represents the resting heart rate for an adult
horse. Assume that x has a distribution that is approximately normal.
(a) Estimate the standard deviation of the x distribution.
(b) What is the probability that the heart rate is less than 25 beats per minute?
(
 2 years ago
 2 years ago
chichulita Group Title
Estimating the Standard Deviation: Veterinary Science The resting heart rate for an adult horse should average about 45 beats per minute with a (95% of data) range from 22 to 70 beats per minute, based on information from The Merck Veterinary Manual (a classic reference used in most veterinary colleges). Let x be a random variable that represents the resting heart rate for an adult horse. Assume that x has a distribution that is approximately normal. (a) Estimate the standard deviation of the x distribution. (b) What is the probability that the heart rate is less than 25 beats per minute? (
 2 years ago
 2 years ago

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kropot72 Group TitleBest ResponseYou've already chosen the best response.0
(a) The empirical rule for the normal distribution states that approximately 95% of the data points lie within the range plus and minus 2 standard deviations of the population mean. Therefore one standard deviation can be found as follows: \[\sigma=\frac{7022}{4}=?\] (b) Firstly find the zscore for 25 beats per minute as follows: \[Z=\frac{2545}{\sigma}=?\] The use a standard normal distribution table to find the required probability.
 2 years ago
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