Listed below are amounts of strontium-90 (in millibecquerels, or mBq) in a simple random sample of baby teeth obtained from residents in a region bom after 1979. Use the given data to construct a boxplot and identify the 5-number summary 127 129 131 135 138 142 145 146 148 151 O 153 154 156 157 158 161 162 162 165 172 The 5-number summary isD0.00.and all in mBq. (Use ascending order. Type integers or decimals. Do not round) Which boxplot below represents the data? OA. OB. 200 C 100 120 140 160 180 20o C Strontium0 (mBa) 140 160 Strontum0 (mBa) 120 180 OC. OD. . 120 140 160 Strontium-00 (ma) 100 180 120 140 160 180 200 C Strontium-0 -a)

Listed below are amounts of strontium-90 (in millibecquerels, or mBq) in a simple random sample of baby teeth obtained from residents in a region bom after 1979. Use the given data to construct a boxplot and identify the 5-number summary 127 129 131 135 138 142 145 146 148 151 O 153 154 156 157 158 161 162 162 165 172 The 5-number summary isD0.00.and all in mBq. (Use ascending order. Type integers or decimals. Do not round) Which boxplot below represents the data? OA. OB. 200 C 100 120 140 160 180 20o C Strontium0 (mBa) 140 160 Strontum0 (mBa) 120 180 OC. OD. . 120 140 160 Strontium-00 (ma) 100 180 120 140 160 180 200 C Strontium-0 -a)

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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Recall that Benford's Law clalms that numbers chosen from very large data files tend to have "1" as the first nonzero digit disproportionately often. In fact, research has shown that if you randomly draw a number from a v leading digit is about 0.301. Now suppose you are the auditor for a very large corporation. The revenue file contains millons of numbers in a large computer data bank. You draw a random sample of n = 229 numbers from this file and r 85 have a first nonzero digit of 1. Let p represent the population proportion of all numbers in the computer file that have a leading digit of 1. large data file, the probability of getting a number with "1" as the () Test the dalm that p is more than 0.301. Use a 0.10. (a) what is the level of signifcance? State the null and alternate hypotheses. O Hg: p = 0.301; H p> 0.301 O Hgi P = 0.301; Hip 0.301; Hp- 0.301 O Ho: P= 0.301; H: p- 0.301 (b) what sampling distribution will you use? O The Student's t, since np > 5 and ng > 5. O The…
A study is run to estimate the incidence of atrial fibrillation (AF) in men and women over the age of 60. Development of atrial fibrillation was monitored over a 10-year follow-up period. The data are summarized below. Using this data, compute the cumulative incidence of AF in men and in women respectively. Developed AF Did not Develop AF Men 120 6453 Women 86 7074
A study of fox rabies in a country gave the following information about different regions and the occurrence of rabies in each region. A random sample of n1 = 16 locations in region I gave the following information about the number of cases of fox rabies near that location. x1: Region I Data 2 8 8 8 6 8 8 1 3 3 3 2 5 1 4 6 A second random sample of n2 = 15 locations in region II gave the following information about the number of cases of fox rabies near that location. x2: Region II Data 1 1 5 1 4 8 5 4 4 4 2 2 5 6 9 (i) Use a calculator with sample mean and sample standard deviation keys to calculate x1 and s1 in region I, and x2 and s2 in region II. (Round your answers to two decimal places.) x1 = s1 = x2 = s2 = (ii) Does this information indicate that there is a difference (either way) in the mean number of cases of fox rabies between the two regions? Use a 5% level of significance. (Assume the distribution of rabies cases in both regions is…
A study of fox rabies in southern Germany gave the following information about different regions and the occurrence of rabies in each region. A random sample of n1 = 16 locations in region 1 gave the following information about the number of cases of fox rabies near that location. x1: Region I Data 3 7 8 7 5 8 8 1 3 3 3 2 5 1 4 6 A second random sample of n2 = 15 locations in region II gave the following information about the number of cases of fox rabies near that location. x2: Region II Data 4 2 4 1 3 8 5 4 4 4 2 2 5 6 9 Note: If a two-sample t-test is appropriate, for degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer.Use a calculator with sample mean and sample standard deviation keys to find x1 and s1 in region I, and x2 and s2 in region II. (Round your answers to two…
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Listed below are amounts of strontium-90 (in millibecquerels, or mBq) in a simple random sample of baby teeth obtained from residents in a region born after 1979. Use the given data to construct a boxplot and identify the 5-number summary. 148 125 152 130 155 141 164 172 all in mBq. The 5-number summary is .... and (Use ascending order. Type integers or decimals. Do not round.) Which boxplot below represents the data? О А. о с. 127 154 120 TH 100 120 140 160 180 200 Strontium-90 (mBq) 140 160 180 Strontium-90 (mBq) 200 Q Q Q 134. 156 137 157 OB. O D. 100 120 142 166 120 140 160 180 200 Strontium-90 (mBq) 140 160 Strontium-90 (mBq) 180 Q Q Q 144 168 150 D 177
Listed below are amounts of strontium-90 (in millibecquerels, or mBq) in a simple random sample of baby teeth obtained from residents in a region born after 1979. Use the given data to construct a boxplot and identify the 5-number summary. 122 147 O A. 120 123 147 The 5-number summary is and all in mBq. (Use ascending order. Type integers or decimals. Do not round.) Which boxplot below represents the data? 100 127 148 140 160 Strontium-90 (mBq) 180 130 151 120 140 160 180 200 Strontium-90 (mBq) 133 153 137 158 B. D. 138 159 120 100 120 140 160 180 Strontium-90 (mBq) 160 Strontium-90 (mBq) 140 159 140 180 200 200 142 162 145 169
A population consists of the following N= 6 scores: 0, 4, 6, 1, 3, and 5. Compute u and o for the population. Find the z-score for each score in the population. Transform the original population into a new population of N=6 scores with µ = 50 and o = 10.
A study of fox rabies in a country gave the following information about different regions and the occurrence of rabies in each region. A random sample of n1 = 16 locations in region I gave the following information about the number of cases of fox rabies near that location. x1: Region I Data 1 9 9 9 7 8 8 1 3 3 3 2 5 1 4 6 A second random sample of n2 = 15 locations in region II gave the following information about the number of cases of fox rabies near that location. x2: Region II Data 1 1 5 1 6 8 5 4 4 4 2 2 5 6 9 What is the value of the sample test statistic? (Test the difference μ1 − μ2. Do not use rounded values. Round your final answer to three decimal places.)
Listed below are amounts of strontium-90 (in millibecquerels, or mBq) in a simple random sample of baby teeth obtained from residents in a region born after 1979. Use the given data to construct a boxplot and identify the 5-number summary. 122 141 123 142 125 144 130 147 131 149 i 133 154 *** The 5-number summary is 122, 131.5, 140, 152.75, and (Use ascending order. Type integers or decimals. Do not round.) S √₁ 133 156 all in mBq. Vi I, 135 158 (,) 137 161 More 139 168
A random selection of volunteers at a research institute have been exposed to a typical cold virus. After they started to have cold symptoms, 15 of them were given multivitamin tablets formulated to fight cold symptoms. The remaining 15 volunteers were given placebo tablets. For each individual, the length of time taken to recover from the cold is recorded. At the end of the experiment the following data are obtained. Days to recover from a cold Treated with multivitamin 4.9. 3.9, 4.9. 7.3, 3.7, 5.7, 4.3, 6.1, 4.9, 5.4, 7.7, 7.3, 4.6, 4.3, 4.6 Treated with placebo 5.1, 5.3, 5.3, 1.6, 1.6, 4.8, 4.4, 3.3, 3.7, 5.2, 5.5, 5.8, 6.5, 1.5, 5.4 Send data to calculator Send data to Excel It is known that the population standard deviation of recovery time from a cold is 1.8 days when treated with multivitamin tablets, and the population standard deviation of recovery time from a cold is 1.5 days when treated with placebo tablets. It is also known that both populations are approximately normally…