
Grand Strand Family Medical Center treats minor medical emergencies for visitors to the Myrtle Beach area. There are two facilities, one in the Little River Area and the other in Murrells Inlet. The Quality Assurance Department wishes to compare the mean waiting time for patients at the two locations. Samples of the waiting times for each location, reported in minutes, follow:
Location | Waiting Time | |||||||||||
Little River | 31.73 | 28.77 | 29.53 | 22.08 | 29.47 | 18.60 | 32.94 | 25.18 | 29.82 | 26.49 | ||
Murrells Inlet | 22.93 | 23.92 | 26.92 | 27.20 | 26.44 | 25.62 | 30.61 | 29.44 | 23.09 | 23.10 | 26.69 | 22.31 |
Assume the population standard deviations are not the same. At the 0.05 significance level, is there a difference in the mean waiting time?
Click here for the Excel Data File
-
Find the degrees of freedom for unequal variance test. (Round down your answer to the nearest whole number.)
-
State the decision rule for 0.05 significance level: H0: μLitttle River = μMurrells Inlet; H1: μLitttle River ≠ μMurrells Inlet. (Negative amounts should be indicated by a minus sign. Round your answers to 3 decimal places for both answers)
-
Compute the value of the test statistic. (Round your answer to 2 decimal places.)

Trending nowThis is a popular solution!
Step by stepSolved in 4 steps with 5 images

- If the mean speed for a major league fast ball is 90 miles per hour and the standard deviation is 5 miles per hour, what would the standardized score be for a pitch that is 97 miles per hour? O 0.4 4.0 1.4 O 1.0arrow_forwardAn automobile repair shop reports that half of the automobiles they repair have a resale value below $ 4,000. In this example, the $4,000 represents which measure of central tendency? It is the mean O median mode rangearrow_forwardThe midterm exam grades of an engineering course were used to create the following stem and leaf plot. What is the third quartile of these scores? A. 52 | Stem-and-leaf of grades N = 40 Leaf Unit = 1.0 B. 73 C. 86 25 D. 93 4 5 26 6. 1359 7 00338 8 01122335789 9 00111233445677899arrow_forward
- Meredith Grey has asked every surgeon at Grey-Sloan Memorial Hospital the following question: "How many surgeries have you scrubbed in on in the past 30 days?" The results are shown below. Number of surgeries 30 40 50 50 90 55 70 70 85 55 70 85 85 55 65 80 60 85 70 80 75 85 135 90 80 85 95 50 75 75 Find the following measures of center. Mean = Median = Mode =arrow_forwardConstruct a quantile graph. Explain why or why not the data set provided has a normal distribution: 5.5, 6.0, 6.4, 5.7, 7.5, 4.5, 5.5, 5.6, 6.5, 6.0, 5.0, and 6.0. include the graph and response.arrow_forwardryan has collected data on individual income (reported in dollars) and has not found any outliers. ryan wants to calculate the average income in his data. which measure of central tendency should he use? -mean -variance -mode -medianarrow_forward
- MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning
- Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman





