The following data consists of daily COVID-19 cases rate for 55 states in United States on 28 Feb2021:Daily COVID-19 Cases Rate1.861.365.128.3514.7912.6117.8510.6919.9816.1413.5720.0526.0620.0218.1335.1733.419.799.4118.6116.6918.779.9724.8138.3315.9636.9121.1312.9414.316.3110.1817.6319.9814.0813.1524.5913.5712.0818.223.7914.3617.2716.9313.0514.2315.834.0228.3326.919.2330.3227.4319.2618.67 The following daily cases rate range can be used to know the risk of COVID-19 spread:HighGreater than or equal to 25Medium10 to <25Low2 to <10Very lowLess than 2a)Based on the risk level above, construct a new frequency table for daily COVID-19 casesrate data.b)Based on the frequency table in (a), construct the pie chart. Provide your interpretationregarding the chart.

Let 'X' be the random variable represents the daily COVID-19 cases rate. Sample size (n) = 55 States…

Answered: The following data consists of daily…

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 national nursing organization is lobbying congress for sunding to hire more nurses nationwide. One of the arguments is that nurses, on average, work significantly longer than full time duty, assuming full time is 40 hours a week. A sample of n=9 nurses had the following work hours last week: 43, 45,48,41,45,50,50,53,48 Calculate the mean length of work hours for the sample.
The FBI compiles information on robbery and property crimes by type and selected characteristic and publishes its findings in Uniform Crime Reports. According to that document, the mean value lost to purse snatching was $468 in 2012. For last year, 12 randomly selected purse-snatching offenses yielded the values lost, to the nearest dollar.405, 519, 529, 477, 315, 572, 434, 455, 375, 341, 288, 503 You are conducting a hypothesis test at .06 level of significance. You have computed a p-value of .026. Based on this, what conclusion do you draw about the null hypothesis? Explain.
Suppose the mean retail price oer gallon of regular gasoline int the United States is $3.42 with a standard eviation of $0.40 and the retail price per gallon has a normal bell shaped distribution. Use the Empirical Rule to answer the following quesitona. What percentage of regular gasoline sold between $2.62 and $3.82 per gallon? what percentage of regualr gasoline sold for more the $3.82 per gallon?
The table below brings the time spent (in minutes) on the graded practice test 1 and the scores of 10 randomly selected ECN 2 221 online students. time spent (in mins) 11 9 14 7 14 3 1 13 12 11 Grade (out of 10) 12 9 13 16 8 10 1 7 8 13 Calculate the mean for the variable time spent in minutes (Round up your answer to a whole number for your answer)
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? Right arm Left arm 150 142 120 131 167 160 179 156 In this example, Hd 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: Hd = 0 H₁: Hd 0 Since the P-value is than the significance level, the null hypothesis. There sufficient evidence to support the claim of a difference in measurements between the two arms.
Is this distribution of "Day of the Month Born" for this statistics class approximately Normal? Justify your answer using the 68-95-99.7 rule.
The time to complete the Advanced Placement (AP) Statistics Exam in previous years is normally distributed with an average time of 2.6 hours. Because of school closures due to COVID-19, the College Board offered an at-home test for the 2020 AP Statistics Exam. A teacher feels that students, on average, will have a different completion time for the at-home exam. They take a random sample of 26 students that took the exam and their mean time was 2.73 hours with a standard deviation of 0.25 hours. Test to see if the mean time has significantly changed using a 5% level of significance. Give answers to at least 4 decimal places. What are the correct hypotheses? Ho: Select an answer ✓ H₁: Select an answer ✓ Test Statistic t = ? ✓ Critical-Value t = ± ? ✓ hours Based on the hypotheses, find the following: hours Shade the sampling distribution curve with the correct critical value(s) and shade the critical regions. The arrows can only be dragged to t-scores that are accurate to 1 place after…
Answer the questions below for the data taken from the Top 15 COVID 19 Confirmedcases by County – 9/20/20. (Source: Johns Hopkins Universityhttps://coronavirus.jhu.edu/us-map)Show your methods very clearly and completely. A. Which county is closest to the mean. What is that mean?B. Which county is closest to the median. What is that median?C. What percentile is Bronx county?D. What county is at the 80th percentile? 260,797 Los Angeles52,063 Orange64,160 Clark139,088 Cook77,889 Dallas123,817 Harris56,681 Riverside75,682 Broward52,598 Bronx166,881 Miami-Dade52,471 San Bernardino139,856 Maricopa70,893 Queens65,848 Kings53,341 Bexar
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