Does it take less time for seeds to germinate if they are nearrock music that is continuously playing compared to beingnear classical music? The 54 seeds that were exposed to rockmusic took an average of 30 days to germinate. The standarddeviation was 15 days. The 46 seeds that were exposed toclassical music took an average of 36 days to germinate. Thestandard deviation for these seeds was 15 days. What can beconcluded at the a = 0.10 level of significance?a. For this study, we should useSelect an answerb. The null and alternative hypotheses would be:Но:Select an answer <Select an answer >Select an answer(please enter a decimal)H1:Select an answer >Select an answer >Select an answer (Please enter a decimal)C. The test statistic ? O(please showyour answer to 3 decimal places.)

Given The 54 seeds that were exposed to rock music took an average of 30 days to germinate. The…

Answered: ck music that is continuously playing…

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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A survey found that women's heights are normally distributed with mean 62.2in. and standard deviation 3.7in. The survey also found that men's heights are normally distributed with mean 67.7in. and standard deviation 3.5in. Most of the live characters employed at an amusement park have height requirements of a minimum of 57in. and a maximum of 62in. Find the percentage of men meeting the height requirement. What does the result suggest about the genders of the people who are employed as characters at the amusement park? The percentage of men who meet the height requirement is
In an experimental study of the longevity of Drosophila melanogaster (fruit fly) 70 male adults and 75 female adults were observed until the death of the last member in each group. The mean lifetime for the males was found to be 43.2 days with a standard deviation of 9.1 days. The corresponding figures for the females were 37.5 days and 8.8 days. Would you conclude that the male Drosophila has a greater longevity than the female? Alpha = 0.01
The class that graduated from a college four years ago took an average of 2.3 science courses. Since then a new curriculum requirement has been introduced. The registrar is interested in the effect this requirement has had on the enrollment in science courses. A random sample of the transcripts of 25 seniors found that the mean number of science courses taken was 2.8 with a standard deviation of 1.01 . Do these results suggest that the mean number of science courses taken has changed significantly since the new requirement was introduced? Test at a = 0.05. (a). The null and alternative hypotheses are Ho: = 2.3 Ha:ữ + 2.3 Но : и 3 2.8 На: и < 2.8 Но: Ho:ữ Ha:ữ + 2.8 :д — 2.3 2.8 На: и + 2.3
A random sample of 26 local sociology graduates scored an average of 458 on the GRE advancedsociology test with a standard deviation of 20. Is this significantly different from the nationalaverage of 440 using a 95% confidence level?
The Dodge Reports are used by many companies in the construction field to estimate the time required to complete various jobs. The company managers want to know if the time required to install 130 square feet of bathroom tile is different from the nine hours reported in the current manual. A researcher for Dodge randomly selects 55 construction workers and determines the time required to install 130 square feet of bath tile. The average time required to install the tile for the sample is 10.3 hours with a standard deviation of 4.2 hours. Use a hypothesis test to determine whether the managers' assumptions are substantiated by the data. Use a significance level of α = 0.05. Assume the population of tile installation times is approximately normally distributed. Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below. Ho : μ = 9 Ha:μ 9
Nationally, patients who go to the emergency room wait an average of 7 hours to be admitted into the hospital. Do patients at rural hospitals have a lower waiting time? The 13 randomly selected patients who went to the emergency room at rural hospitals waited an average of 6.8 hours to be admitted into the hospital. The standard deviation for these 13 patients was 1 hours. 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 answerv H1: v Select an answerv c. The test statistic ?v (please show your answer to 3 decimal places.) %D d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ?v a f. Based on this, we should Select an answverv the null hypothesis. g. Thus, the final conclusion is that O The data suggest the populaton mean is significantly lower than 7 ata = 0.05, so there is statistically significant…
A professional baseball player changed his throwing motion to increase the velocity of hisfastball. Before the change, the player threw his fastball at an average of 91 miles per hour.After the change in his throwing motion, the team watched him throw 64 fastballs with anaverage speed of 91.75 miles per hour and a standard deviation s = 3 miles per hour. Determinewhether the baseball player increased the speed of his fastball at the 1% significance level.
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A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs to be replaced. From past studies of this tire, the standard deviation is known to be 8,000. A survey of owners of that tire design is conducted. Of the 30 tires surveyed, the mean lifespan was 45,900 miles with a standard deviation of 9,800 miles. Using alpha = 0.05, is the data highly consistent with the claim? A-State the distribution to use for the test. (Round your answers to two decimal places.) B-What is the test statistic? (If using the z distribution round your answers to two decimal places, and if using the t distribution round your answers to three decimal places.) C-What is the p-value? (Round your answer to four decimal places.) D-Indicate the correct decision ("reject" or "do not reject" the null hypothesis), the reason for it, and write an appropriate conclusion. (i) Alpha (Enter an exact number as an integer, fraction, or decimal.) E-
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