A simple random sample of 43 men from a normally distributed population results in a standard deviation of 11.1 beats per minute. The normal range of pulse rates of adults is typically given as 60 to 100 beats per minute. If the range rule of thumb is applied to that normal range, the result is a standard deviation of 10 beats per minute. Use the sample results with a 0.10 significance level to test the claim that pulse rates of men have a standard deviation equal to 10 beats per minute. Complete parts (a) through (d) below. a. Identify the null and alternative hypotheses. Choose the correct answer below. O B. Ho: 0210 beats per minute H,: o< 10 beats per minute O A. Ho: 0= 10 beats per minute H:a< 10 beats per minute OC. Hg: oz 10 beats per minute H: G = 10 beats per minute D. Ho: 0= 10 beats per minute H,: G# 10 beats per minute b. Compute the test statistic. 2= 51.748 (Round to three decimal places as needed.) c. Find the P-value. P.value =D (Round to four decimal places as needed.)
Continuous Probability Distributions
Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.
Normal Distribution
Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!
A simple random sample of
men from a
beats per minute. The normal
beats per minute. Use the sample results with a
significance level to test the claim that pulse rates of men have a standard deviation equal to
beats per minute. Complete parts (a) through (d) below.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
