There is a claim that playing e-sport increase food intake. The following table (Table 2)shows data on food intake (in Kcal) for 15 men on the 2 hours playing e-sport each nightand for 15 men on the 4 hours playing e-sport each night. Conduct a hypothesis test with a= 0.05 to determine there is a significant difference in mean food intake for two differentgroup.Table 22-hour playing e-sport3586 4470 3068 5338 22214791 4435 3099 3187 39013868 3869 4878 3632 45184965 3918 1987 4993 52203653 3510 3338 4100 57924547 3319 3336 4304 40574-hour playing e-sport

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Answered: There is a claim that playing e-sport…

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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Let uss. HMS: HLS, Hsuv and HMV represent the mean costs per mile for small sedans, medium sedans, large sedans, SUV 4WDS, and minivans respectively. What are the hypotheses for this test? O A. Ho: Hss HMs = HLS = HSUV = HMv H: Not all the means are equal. O B. Ho: Hss= HMs HLS HSUV = Hmv H2: Hss HMS HLs Hsuv HMV O C. Ho: Hss HMS HLS HSUV HMV H: Hss = HMS = PLs = Hsuv = PMv O D. Ho: Not all the means are equal. H Hss = HMS PLs=Hsuv = PMv
To test whether the mean time needed to mix a batch of material is the same for machines produced by three manufacturers, a chemical company obtained the following data on the time (in minutes) needed to mix the material. Manufacturer 1 2 3 19 29 21 26 26 19 24 32 24 27 25 16 (a) Use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. Use ? = 0.05. State the null and alternative hypotheses. H0: ?1 = ?2 = ?3Ha: ?1 ≠ ?2 ≠ ?3H0: ?1 ≠ ?2 ≠ ?3Ha: ?1 = ?2 = ?3 H0: ?1 = ?2 = ?3Ha: Not all the population means are equal.H0: At least two of the population means are equal.Ha: At least two of the population means are different.H0: Not all the population means are equal.Ha: ?1 = ?2 = ?3 Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to three decimal places.) p-value = State your conclusion. Do not reject H0. There is sufficient…
Consider the following data: - 4 - 3 - 1 P(X = x) 0.2 0.1 0.2 0.1 0.4 Step 4 of 5: Find the value of P(X > -2). Round your answer to one decimal place.
Two of the hottest smartphones on the market are the newly released iPhone6 and the Samsung Galaxy S6. CNet.com offers online reviews of all major cell phones, including battery life tests. In a review of the iPhone6, the talk-time battery life of 35 iPhones was measured. Similarly, the talk-time battery life of 30 Galaxy S6s was measured. Two outputs are given below. Which is appropriate for analyzing the data collected? Output 1 lhi Mean of iPhone6 Hz : Mean of Galaxy S6 Sam ple Diff. Output 2 HR = mean of the paired difference between iPhone6 and Galaxy S6 Difference Std. Err. Difference Sam ple Diff. Std. Err. H1 - Hz -0.71759861 0.189403 iPhone6 - Galaxy S6 -0.754246 0.192151 Possible p-values: 0.0001, 0.0002, 0.9999 Possible p-values: 0.0002, 0.0004, 0.9998 OOutput 1 Output 2 Using the StatCrunch output chosen above, determine if there is a difference in the mean battery life for the two phones. Use a significance level of 0.01 when conducting the test. • Select the appropriate…
If a researcher reports a one-sample t-test with df = 24, how many individuals participated in this study
According to a CCH Unscheduled Absence survey, 9% of small businesses use telecommuting of workers in an effort to reduce unscheduled absenteeism. This proportion compares to 6% for all businesses. Is there really a significant difference between small businesses and all businesses on this issue? Use these data and an alpha of .10 to test this question. Assume that there were 725 small businesses and 875 other businesses in this survey. Appendix A Statistical Tables (Round the intermediate values to 4 decimal places. Round your answer to 2 decimal places.) Observed z = %3D The decision is to
If there is an interaction, is the interaction significant? That is, does the effect of maternal diet on passive avoidance depends on the levels of age(i.e., on whether the rat is adolescent or adult)? Why? Provide F-statistic, df of the numerator, df of the denominator , and p-value.
In the "Quiz_dataset1.xlsx" dataset, which is the correlation between the house price and its area: Select one: a. 0 b. 0.71 c. 0.777 d. None of the above
3.1 In a study, serum cholesterol levels were measured for a large number of healthy males. The population wasfollowed for 16 years. At the end of this time, the men were divided into two groups: those who had developedcoronary heart disease and those who had not. The distributions of the initial serum cholesterol levels for eachgroup were found to be approximately normal. Among individuals who eventually developed coronary heartdisease, the mean serum cholesterol level was µa=244 mg/100 ml and the standard deviation was od=51 mg/100 ml; for those who did not develop the disease, the mean serum cholesterol level was und = 219 mg/100 ml andthe standard deviation was ond = 41 mg/100 ml.a) Suppose that an initial serum cholesterol level of 260 mg/100 ml or higher is used to predict coronary heart disease. What is the probability of correctly predicting heart disease for a man who will develop it?b) What is the probability of predicting heart disease for a man who will not develop it?
The following data are measures of pulmonary vascular resistance (PVR) in eight lambs before and after infusion of the drug histamine. Answer the following to perform a statistical test to determine whether histamine increases PVR on average. Lamb ID PVR before histamine PVR after histamine 1 0.095 0.176 2 0.106 0.142 3 0.082 0.194 4 0.152 0.136 5 0.090 0.115 6 0.086 0.084 7 0.137 0.103 8 0.121 0.189 a) Name of hypothesis test: b) H0: c) HA: d) Test Statistic: e) p-value: f) Decision in the context of the problem:
The data in Table 7..7 are collected in an experiment designed to investigate the impact of different positions of the mother during ultrasound on fetal heart rate. Fetal heart rate is measured by ultrasound in beats per minute. The study includes 20 women who are each assigned to one position and have the fetal heart rate measured in that position. Each woman is between 28 weeks, and 32 weeks, gestation. Is there a significant difference in mean fetal heart rates by position? Run the test at a 5% level of significance. PLEASE SHOW THE ANSWER IN EXCEL FORMAT WITH FORMULAS.
Researchers conducted a study to determine the effects of different types of alcohol on the peak alcohol concentration. In one part of the study, the researchers gave 15 randomly select males a controlled volume of vodka and monitored the subjects' alcohol concentration following the period of consumption. The legal limit for driving is 80 mg/dL (milligrams per deciliter of blood). A hypothesis test was conducted to see if the mean peak alcohol concentration from drinking vodka was different from the legal driving limit. This was reflected in the null and alternative hypotheses ?0:??1:?=80 mg/dL≠80 mg/dL The researchers required their results to be statistically significant at a level of ?=0.10. The mean peak alcohol concentration of the participants after drinking a controlled volume of vodka was 77.4 mg/dL with a standard deviation of 17.25 mg/dL. Determine the confidence interval that corresponds to the ?‑test. Give the lower and upper bounds precise to two decimal places

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