Solution :
The statistical software output for this problem is :
Q3 = 19.5
Q1 = 13.5
IQR = Q3 - Q1 = 19.5 - 13.5 = 6
The drug reaction times in minutes) for a sample of 12 random patients are given below:...
Commute times to Central Bank for a random sample of employees (in minutes) are listed below. 21 32 13 19 48 22 7 18 31 56 28 6 16 Estimate with 95% confidence the mean commute time of Central Bank employees.
A random sample of 16 pharmacy customers showed the waiting times below (in minutes). 11 25 19 17 24 16 18 20 19 23 21 17 17 14 15 11 Click here for the Excel Data File Find a 90 percent confidence interval for μ, assuming that the sample is from a normal population. (Round your standard deviation answer to 4 decimal places and t-value to 3 decimal places. Round your answers to 3 decimal places.) The 90% confidence interval...
A random sample of 16 pharmacy customers showed the waiting times below (in minutes). Find a 90 percent confidence interval for μ, assuming that the sample is from a normal population. 21 22 22 17 21 17 23 20 20 24 9 22 16 21 22 21
The travel times (in minutes) to work for a random sample of employees are shown in the frequency table below. What is the mean of the times? time (mins) frequency 0-10 25 11-21 17 22-32 12 33-43 8 44-54 7 55-65 2
7.4.3 Here is a random sample of taxi-out times (in minutes) for airline flights out of an airport: 12, 19, 13, 43, 15. Which of the following are not possible bootstrap samples? (a) 12, 19, 13, 43, 15 (b) 12, 19, 15 (c) 12, 12, 12, 43, 43 (d) 14, 20, 12, 19, 15 (e) 12, 13, 13, 12, 43, 15, 19 Select all that apply. 12, 19, 15 12, 19, 13, 43, 15 14, 20, 12, 19, 15...
Bus wait times are uniformly distributed between 8 minutes and 24 minutes. The unshaded rectangle below with area 1 depicts this. The shaded rectangle depicts the probability that a randomly selected bus wait time will be between 11 and 23 minutes. 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Preview (Round answer to at least 4 Find the probability that a person waits between 11 and 23? decimal places)
The following data are the ages (in years) at diagnosis for 20 patients under treatment for meningitis: 18 18 25 19 23 20 69 18 21 18 20 18 18 20 18 19 28 17 18 18 (a) Calculate and interpret the values of the sample mean, variance, and standard deviation. (b) Compute the sample median. Why might you recommend the sample median as a measure of center rather than the sample mean? (c) Compute the upper quartile, the lower...
please find a) mean AND b) standard deviation
Medicine. The reaction times in minutes) of a drug given to a random sample of 12 patients are: 3.8 6.3 4.2 4.1 4.2 5.4 4.6 6.3 6.7 4.3 5.7 6.7 a. Find the mean of the reaction times. mins (Type an integer or a decimal. Round to two decimal places.)
Suppose that the wait times for patients in an emergency room are normally distributed with an unknown mean and standard deviation. A random sample of 18 patients is taken and gives a sample mean of 25 minutes and a sample standard deviation of 2 minutes. As found above, the EBM, margin of error, for a 95% confidence interval estimate for the population mean using the Student's t-distribution is 0.99. Find a 95% confidence interval estimate for the population mean using...
The stem-and-leaf plot below shows the marathon training times (in minutes) for a random sample of 30 female runners. Training Times (in minutes) of Female Runners 17 8 9 9 Key: 17 8 = 178 18 0 0 0 0 1 2 3 4 6 6 7 9 19 0 0 0 1 3 4 5 5 6 6 20 0 0 0 1 2 3 Provided the data from the stem-and-leaf plot above answer the following questions. a) Use...