Random Sample of Length of Eruption at Old Faithful1089910399106104109109102105$10010311695101107Source: LaDonna Hansen, Park Curator108102103110104113100C.10590111110102$105110101106120103921031101011049010110894110a. Determine the sample mean and standard deviation length of eruption(round to nearest whole number).b. Use the Empirical Rule to determine the percentage of eruptions that lastbetween 92 and 116 seconds.Determine the actual percentage of eruptions that last between 92 and 116seconds (including 92 and 116).d. Use the Empirical Rule to determine the percentage of eruptions that last lessthan 98 seconds.e. Determine the actual percentage of eruptions that last less than 98 seconds.f.Use the Empirical Rule to determine the percentage of eruptions that lastbetween 98 and 116 seconds (including 98 and 116).g. Determine the actual percentage of eruptions that last between 98 and 116 seconds.

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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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tudents in a statistics class took their first test. The following are the scores they earned. Create a requency distribution and histogram for the data using a lower class limit of 49.5 and a class width of 10. escribe the shape of the distribution. ) Since data were collected for 1 make is a histogram 49.5 Classes 90 98 90 94 95 I 98 92 99 91 95 83 81 83 87 88 87 87 82 77 73 71 76 62 69 50 ) For this one the class width is given to be the following: class width = Complete the frequency/relative frequency table using the given class width. Round relative frequencies to 3 decimal places. quantitatve Frequency variable(s), the correct graph to Which of the following is the correct histogram for the given data? Relative Frequency
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 =
An employment information service claims the mean annual salary for senior level product engineers is $96,000. The annual salaries (in dollars) for a random sample of 16 senior level product engineers are shown in the table to the right. At a = 0.05, test the claim that the mean salary is $96,000. Complete parts (a) through (e) below. Assume the population is normally distributed. Ho Ha (Type integers or decimals. Do not round!) The claim is the O A. hypothesis. (b) Use technology to find the critical value(s) and identify the rejection region(s). The critical value(s) is/are to = (Use a comma to separate answers as needed. Round to two decimal places as needed.) Choose the graph which shows the rejection region. tto ^ OB. Q tto 100,735 82,529 102,472 91,033 A Annual Salaries 96,372 93,622 112,799 74,257 77,041 81,046 Q 76,250 104,038 103,951 82,104 85,119 110,310 D. -to
Rental car transaction times are uniformly distributed between 15 and 35 minutes. a. P( transaction takes less than 20 minutes) b. P(transaction takes more than 29 minutes) c. P( transaction takes between 18 and 30 minutes) d. P(transaction takes exactly 19 minutes) e. What is the mean transaction time? f. Determine the standard deviation.
Listed below are time intervals (min) between eruptions of a geyser. The "recent" times are within the past few years, and the "past" times are from 1995. Does it appear that the variation of the times between eruptions has changed? Use a 0.05 significance level. Assume that the two populations are normally distributed.
1. Sample data for the number of deaths attributed to UV radiation in African countries in the year 2002 is given in table. 50 84 31 338 504 40 7 58 204 15 27 39 1 45 174 98 94 199 27 58 356 45 94 26 171 13 57 138 39 3 171 41 1177 102 123 433 35 40 456 125 (a) Find the mean and standard deviation. (b) Use Chebyshev's theorem to find an interval centered about the mean number of deaths from UV radiation in which you would expect at least 75% of the numbers to fall.
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