Question #3: The average gasoline price per gallon (in cities) and the cost of a barrel of oil are shown for a random selection of weeks in 2015. Oil ($) 51.91 60.65 59.56 52.86 45.12 44.21 Gasoline ($) 1.97 1.96 2.06 2.04 2.00 1.99 1. Is there a relationship between "oil price" and "gasoline price"? (Interpretation- Strength & Direction) nExy – (Ex)(Ey) /nEx² – (Ex)² Vn£y² - (Ey)² r = 2. Is the relationship significant at a = 0.05? (Interpretation) п - 2 t = r 1- r² 3. Predict ŷ, given x = 30 (Interpretation & Linear Plot) ΣΥΣx?-Σx Σ xv η ΣxΣ x) ηΣ xy-Σ x) (Σ ) η Σx2-(Σx)2 a = (intercept) ŷ = a + bx b = (slope)

Question #3: The average gasoline price per gallon (in cities) and the cost of a barrel of oil are shown for a random selection of weeks in 2015. Oil ($) 51.91 60.65 59.56 52.86 45.12 44.21 Gasoline ($) 1.97 1.96 2.06 2.04 2.00 1.99 1. Is there a relationship between "oil price" and "gasoline price"? (Interpretation- Strength & Direction) nExy – (Ex)(Ey) /nEx² – (Ex)² Vn£y² - (Ey)² r = 2. Is the relationship significant at a = 0.05? (Interpretation) п - 2 t = r 1- r² 3. Predict ŷ, given x = 30 (Interpretation & Linear Plot) ΣΥΣx?-Σx Σ xv η ΣxΣ x) ηΣ xy-Σ x) (Σ ) η Σx2-(Σx)2 a = (intercept) ŷ = a + bx b = (slope)

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

What is the actual value of the median
Describe in detail the results achieved on the company’s test. Ignore other variables for now, just describe the test results. If the company is considering training for the lowest 10% of employees what score would they need to achieve to be exempted from training? Test Result 163 148 142 173 168 155 163 194 119 124 149 171 160 104 165 154 122 160 148 138 158 112 189 163 203 165 176 152 74 129 166 134 124 169 187 163 172 195 149 107 156 183 133 83 148 127 173 95 139 179 136 153 141 155 179 152 129 155 145 113 142 147 171 139 174 143 96 199 143 172 123 146 128 187 138 163 178 154 199 164 123 201 205 135 123 138 195 184 165 196 154 176 82 173 156 149 152 116 174 141 111 74 123 182 157 141 167 162 172 107 149 182 112 135 177 159 138 163 148 198…
Education pays off, according to some data from a study. The median weekly earnings and the unemployment rates for eight different levels of education are shown in the table. Educational Attainment Doctoral degree (Dr) Professional degree (Prf) Master's degree (MS) Bachelor's degree (BS) Associate degree (AS) Some college, no degree (SC) High school diploma (HS) Less than a high school diploma (NHS) Unemployment Rate (%) 1.7 1.7 2.5 2.6 3.5 4.3 5.3 7.5 Median Usual Weekly Earnings ($) 1,665 1,747 1,382 1,155 820 757 690 505 Note: Data are for persons aged 25 and over. Earnings are for full-time wage and salary workers.
ences in your response. Investigation 2: Songs from Spotify - Mode and Popularity A random sample of 3439 songs was selected from the Spotify database and twelve variables were measured for each song. Remember, the Mode variable indicates the type of scale the song's melodic content is derived from (Major or Minor). Popularity is on a scale of 0 to 100 and songs with higher numbers are more popular. Let us now investigate whether Major songs are significantly more "Popular" than Minor songs. Let us define "Popular" as songs that earned a popularity rating of 50 or higher. From the random sample of songs, there were 1964 Major songs and of those 853 were rated "Popular." In addition, there were 1475 Minor songs and of those 587 were rated "Popular." In this invesligation we will subtract (Major - Minor). a) Define the population parameter using context and symbols in one complete sentence. b) State the hypotheses using the claim. c) Check the specific conditions necessary to consider…
V3
Question linked as a picture!
Question Help v According to a census company, 7.1% of all babies born are of low birth weight. An obstetrician wanted to know whether mothers between the ages of 35 and 39 years give birth to a higher percentage of low-birth-weight babies. She randomly selected 350 births for which the mother was 35 to 39 years old and found 38 low-birth-weight babies. Complete parts (a) through (c) below. (a) If the proportion of low-birth-weight babies for mothers in this age group is 0.071, compute the expected number of low-birth-weight births to 35- to 39-year-old mothers. What is the expected number of births to mothers 35 to 39 years old th are not low birth weight? The expected number of low-birth-weight births to 35- to 39-year-old mothers is. The expected number of births to mothers 35 to 39 years old that are not low birth weight is. (Type integers or decimals.) Enter your answer in the edit fields and then click Check Answer. Check Answer Clear All 6 parts remaining MacBook Air DII DD 80…
Just answer question number 1 Answers: 1. 2 vs. 3, q = 6.74, Reject H0, the mean scores of groups 2 and 3 differ significantly; 2 vs. 4, q = 2.04, Do not reject H0, there is no evidence for a significant difference between the mean scores of groups 2 and 4; 2 vs. 1, q = 5.62, Reject H0, the mean scores of groups 2 and 1 differ significantly.
Hi can you correct the wrong questions?
Healthy Eating Americans appear to be eating healthier. Between 1970 and 2013 the per capita consumption of broccoli increased 1200.5% from 0.5 to 6.4 pounds. A nutritionist followed a group of people randomly assigned to one of three groups and noted their monthly broccoli intake (in pounds). At a=0.05 is there a difference in means? Group A Group B Group C 2.0 2.0 3.7 1.5 1.5 2.5 0.75 4.0 4.0 1.0 3.0 5.1 1.3 2.5 3.8 3.0 2.0 2.9 Null Hypothesis Alternative Hypothesis Find the Critical Value Find the Variance of each sample F= Make the decision Summarize Show how to use the TI-84 and Excel to work out the problems.
The Focus Problem at the beginning of this chapter asks you to use a sign test with a 10% level of significance to test the claim that the overall temperature distribution of Madison, Wisconsin, is different (either way) from that of Juneau, Alaska. The monthly average data (in °F) are as follows. Month Jan. Feb. March April May June Madison 17.8 21.4 31.8 46.9 57.1 67.8 Juneau 22.8 27.5 31.8 38.6 46.2 52.7 Month July Aug. Sept. Oct. Nov. Dec. Madison 71.9 69.5 60.8 51.7 35.6 22.2 Juneau 55.6 54.9 49.3 41.1 32.5 26.3 (a) What is the level of significance? (b) Compute the sample test statistic. (Use 2 decimal places.) (c) Find the P-value of the sample test statistic
2 part question done in Excel. 1. Data are collected in a clinical trial evaluating a new compound designed to improve wound healing in trauma patients. The new compound is compared against a placebo. After treatment for 5 days with the new compound or placebo, the extent of the wound healing is measured and the date are show in the table below. Is there a difference in the extent of wound healing by treatment (Hint: Are treatment and the percent wound healing independent?) Run the appropriate tes at a 5% level of significance. 2. Use the data in Problem 1 and pool the data across the treatments into one sample of size n=250. Use the pooled data to test whether the distribution of the percent wound healing is approximately normal. Specifically, use the following distributions: 30%, 40%, 20%, and 10%. Run the appropriate test at a = 0.05.