A hospital wants to determine if the type of treatment for pneumonia is a factor in recovery time? The tablebelow shows the number of days to recovery for several randomly selected pneumonia patients that hadvarious types of treatment.Sent Home With MedicineA Few Hours in the HospitalOvernight Hospital Stay26251714251713252422724421111419162012192121Assume that all distributions are normal, the three population standard deviations are all the same, and thedata was collected independently and randomly. Use a level of significance of a = 0.05.Ho: µi = µ2 = µ3H1: At least two of the means differ from each other.1. For this study, we should use Select an answer e(Please show your answer to 3 decimal places.)2. The test-statistic for this data =(Please show your answer to 4 decimal places.)3. The p-value for this sample =a4. The p-value is Select an answerO hypothesis5. Base on this, we should Select an answer6. As such, the final conclusion is that...O There is insufficient evidence to support the claim that treatment type is a factor in recoverytime for pneumonia.There is sufficient evidence to support the claim that treatment type is a factor in recovery timefor pneumonia.

Hypotheses: H0: μ1=μ2=μ3 H1: At least two of the means differ from each other. All distributions are…

Answered: A hospital wants to determine if the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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age, a Bahand will last 6.3 days from the time it is purchased in the store to the time it is too rotten to eat. Is the mean time to spoil different if the banana is hung from the ceiling? The data show results of an experiment with 15 bananas that are hung from the ceiling. Assume that that distribution of the population is normal. 5.5, 3.9, 3.9, 5.7, 6.5, 5.9, 3.9, 7.4, 4.3, 5.9, 4.5, 4.2, 7, 5.1, 4 What can be concluded at the the a = 0.05 level of significance level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? Select an answer H₁: ? Select an answer c. The test statistic ? O (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) d. The p-value = e. The p-value is ? a f. Based on this, we should Select an answer the null hypothesis. g. Thus, the final conclusion is that ... The data suggest the populaton mean is significantly different from 6.3 at a = 0.05, so there is…
You are performing a study about weekly per capita milk consumption. A previous study found weekly per capita milk consumption to be normally distributed, with a mean of 47.5 fluid ounces and a standard deviation of 10.9 fluid ounces. You randomly sample 30 people and record the weekly milk consumptions shown below. 36 55 30 40 42 49 32 65 38 48 D 43 27 39 54 44 46 45 53 51 50 36 31 24 45 60 44 50 46 58 36 (a) Draw a frequency histogram to display these data. Use seven classes. Choose the correct answer below. O A O B. OD. 10- 10- 10- 8- 0- 26.5 62.5 26.5 62.5 26.5 62.5 625 Volume Volume Volume Volume Do the consumptions appear to be normally distributed? Explain. Choose the correct answer below. O A. No, because the histogram is neither symmetric nor bell-shaped. O B. Yes, because the histogram is neither symmetric nor bell-shaped. O C. No, because the histogram is symmetric and bell-shaped. O D. Yes, because the histogram is symmetric and bell-shaped. Clear all Final check Help me…
A random sample of 12 second-year university students enrolled in a business statistics course was drawn. At the course's completion, each student was asked how many hours he or she spent doing homework in statistics. The data are listed below. 43 46 45 43 48 41 51 41 41 47 48 44 It is known that the population standard deviation is 6. The instructor has recommended that students devote 4 hours per week for the duration of the 12-week semester, for a total of 48 hours. Test to determine whether there is evidence at the 0.02 significance level that the average student spent less than the recommended amount of time. Fill in the requested information below. A. The value of the standardized test statistic (give to at least 2 decimal places): B. The p-value is (give to at least 4 decimal places) ..
The incomes of math tutors in a tutoring center of a university are normally distributed with a mean of $1100 and a standard deviation of $150 what percentage of tutors earn less than $900 a month
Are the snow conditions a factor in the number of visitors at a ski resort? The table below shows data that was collected. Machine Made Powder Hard Packed 1224 1733 1427 1976 1501 1542 1432 2493 1022 1080 1707 1350 1383 2410 2474 1033 2137 2051 1892 1710 2029 1022 1006 Assume that all distributions are normal, the three population standard deviations are all the same, and the data was collected independently and randomly. Use a level of significance of α=0.01α=0.01.H0: μ1=μ2=μ3H0: μ1=μ2=μ3H1:H1: At least two of the means differ from each other. The test-statistic for this data: F = The p-value for this sample =
Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the range, variance, and standard deviation for the sample data Given that these are the top 10 salaries, do we know anything about the variation of salaries of TV personalities in general? 38 36 34 27 16 12 9 8 7.8 6.4 The range of the sample data is S milion. (Type an integer or a decimal.) ces
An insurance company is looking over accident statistics. They want to model the population of all drivers for the population parameter of the standard deviation and variance of the age of the driver involved in an automobile accident. They have a sample of 100 accidents from around the country. The age of the driver in each of these accidents is provided below. Use Excel to calculate the sample standard deviation and the sample variance. Round your answers to one decimal place. Do not round until you've calculated your final answer "Age of people in accident"48643346436728189044472440202747683248472248217347302918487364454920205066654187873417203176493089672222455023481746382942254720463119214227226621236675744621461969202048238851284918204522313823284939 Standard deviation: Variance:
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A factory produces sacks of flour, a sample of 14 pieces with the following weights are taken:Find the mean, standard deviation and variance
A random sample of 12 second-year university students enrolled in a business statistics course was drawn. At the course's completion, each student was asked how many hours he or she spent doing homework in statistics. The data are listed below. 15 26 23 17 28 20 27 17 18 16 26 28 It is known that the population standard deviation is 6. The instructor has recommended that students devote 2 hours per week for the duration of the 12-week semester, for a total of 24 hours. Test to determine whether there is evidence at the 0.07 significance level that the average student spent less than the recommended amount of time. Fill in the requested information below. A. The value of the standardized test statistic: Note: For the next part, your answer should use interval notation. An answer of the form (-00, a) is expressed (-infty, a), an answer of the form (b, olis expressed (b, infty), and an answer of the form (-00, a) U (b, o0)l is expressed (-infty, a)U(b, infty). B. The rejection region for…
The following table shows the number of people that have either 0, 1, 2 or 3 cars registered in their name from a sample of 166 people. Complete the table. xx CountCount 0 45 1 43 2 32 3 46 Find the mean number of cars owned for this sample. Give your answer to at least 2 decimal places. Find the standard deviation of cars owned for this sample. Give your answer to at least 2 decimal places.
Listed below are systolic blood pressure measurements (mm Hg) taken from the right and left arms of the same woman. Assume that the paired sample data is a simple random sample and that the differences have a distribution that is approximately normal. Use a 0.05 significance level to test for a difference between the measurements from the two arms. What can be concluded? 143 140 141 136 133 Right arm Left arm 180 174 192 140 144 In this example, . is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the measurement from the right arm minus the measurement from the left arm. What are the null and alternative hypotheses for the hypothesis test? O A. Ho: Ha = 0 O B. Ho: Hd #0 0 = Prt :H O D. Ho: Hd =0 H O C. Ho: Ha 0 Identify the test statistic. t%3D (Round to two decimal places as needed.) Identify the P-value. P-value (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test?…

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