STATS 10 Assignment 2 (1)

Sonya collected data on the shoe size worn by each member of her class. She used this data to calculate the average shoe size in the class. What type of data are these? 1.primary aggregate data 2.secondary aggregate data 3.primary microdata 4.secondary microdata

The Iris Flower Data Set at https://en.wikipedia.org/wiki/Iris flower data set e consists of measurements taken from Iris flowers: the petal length and width and the sepal length and width were measured in centimeters (cm) and recorded for a lot of flowers. We are interested in being able to use the petal width to predict the petal length. Use the Excel output provided below to answer the Iris Flower questions that follow. SUMMARY OUTPUT Data from: https://en.wikipedia.org/wiki/Iris flower data set Using Petal Width to predict Petal Length. Regression Statistics Multiple R 0.962746025 R Square 0.926879908 Adjusted R Square 0.926385853 Standard Error 0.47895943 Observations 150 ANOVA df MS Significance F Regression 1 430.373884 430.373884 1876.067473 5.90274E-86 Residual 148 33.951516 0.229402135 Total 149 464.3254 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0% Intercept 1.079463302 0.073168311 14.75315321 7.2245E-31 0.934873757 1.224052847…

an attempt to develop a model of wine quality as judged by wine​ experts, data on alcohol content and wine quality was collected from variants of a particular wine. From a sample of 12​wines, a model was created using the percentages of alcohol to predict wine quality. For those​ data, SR=18,671 and SST=27,382.Use this information to complete parts​ (a) through​ (c) below. Please complete part 3(B) ONLY.       Question content area bottom Part 1 a. Determine the coefficient of​ determination, r2​, and interpret its meaning.   r2=0.682 ​(Round to three decimal places as​ needed.)   Part 2 Interpret the meaning of r2.   It means that 68.2 of the variation in wine quality   can be explained by the variation in alcohol content.   ​(Round to one decimal place as​ needed.)   Part 3 b. Determine the standard error of the estimate.   SYX= ​(Round to four decimal places as​ needed.)

please assist with this NON GRADED assignment

attempt.php?attempt-295788cmid-9447&page-5 The box plots below represent the lifetime (in months) for two brands of car battery. What is the best measure of dispersion for MARATHON brand? Give Reason. Marathon Energysia Answer: 62 63 64 65 99 5 4 73 72 1 70 69 68 67

I need the right answers to this problem.

When exposed to an infection, a person typically develops antibodies. The extent to which theantibodies respond can be measured by looking at a persons titer, which is a measure of the number of antibodies present. The higher the titer is, the more antibodies that are present. The data in Table represent the titers of 11 ill people and 11 healthy people exposed to the tularemia virus in Vermont. Is the level of titer in the ill group greater than the level of titer in the healthy group? Use the α = 0.10 level of significance.

A blog noted that​ "there has been increasing anecdotal evidence that vitamin C may still be useful as an anticancer medicine if used in high concentrations and given directly into the vein​ (intravenously)." Use this information to answer the questions below.       Question content area bottom Part 1 Explain what it means that there is​ "increasing anecdotal​ evidence" that Vitamin C may be a useful anticancer medicine.     A. There is no evidence that shows Vitamin C may be a useful anticancer medicine.   B. There is scientific evidence that Vitamin C is a​ non-useful anticancer medicine.   C. There is an increase in rigorous or scientific analysis that shows Vitamin C may be a useful anticancer medicine.   D. There is an increase in observations or personal experiences that shows Vitamin C may be a useful anticancer medicine. Part 2 How does anecdotal evidence contrast with scientific​ evidence?     A. They are stories about individual cases.…

Background: To prevent crashes caused by running red lights, many states are installing cameras at dangerous intersections. These cameras are used to take photographs of the license plates of vehicles that run a red light. The Virginia Department of Transportation (VDOT) obtained data on the number of crashes per year caused by running a red light at 13 intersections in Fairfax County, Virginia. Source: Virginia Transportation Research Council, "Research Report: The Impact of Red Light Cameras (Photo-Red Enforcement) on Crashes in Virginia", June 2007 Directions: Perform an appropriate significance test to determine whether or not the reduction in the number of crashes was statistically significant. 1. Click on the Data button below to display the data. Copy the data into a statistical software package and click the Data button a second time to hide it. Data Before After 3.7 1.26 0.1 0 4.55 1.69 2.4 1.94 2.09 3.24 2.5 2.72 0.83 0.24 3.05 1.67 3.21 0.33 1.08 0.18 1.25 0.99 7.25 5.02 191…

Background: To prevent crashes caused by running red lights, many states are installing cameras at dangerous intersections. These cameras are used to take photographs of the license plates of vehicles that run a red light. The Virginia Department of Transportation (VDOT) obtained data on the number of crashes per year caused by running a red light at 13 intersections in Fairfax County, Virginia. Source: Virginia Transportation Research Council, "Research Report: The Impact of Red Light Cameras (Photo-Red Enforcement) on Crashes in Virginia", June 2007 Directions: Perform an appropriate significance test to determine whether or not the reduction in the number of crashes was statistically significant. RED LIGHT PHOTO ENFORCED 1. Click on the Data button below to display the data. Copy the data into a statistical software package and click the Data button a second time to hide it. Data Before After 3.5 1.46 0.47 0.1 0.39 0 4.55 1.69 2.6 2.04 2.39 3.14 2.5 2.62 0.83 0.14 3.25 1.57 3.41…

A legal case rested on whether a patent witness' signature was written on top of key text in a notebook or under the key text. The zinc measurements for three notebook locations on a text line, on a witness line, and on the intersection of the witness and text line-are provided in the table below. Complete parts a through c below. Text line Witness line 0.319 0.384 0.327 Intersection Find the test statistic. HT-1400 0.321 0.307 0.327 t = (Round to two decimal places as needed.) Find the p-value. p-value= (Round to three decimal places as needed.) a. Use a test (at a = 0.02) to compare the mean zinc measurement for the text line with the mean for the intersection. Let μ represent the mean zinc measurement for the text line, let uw represent the mean zinc measurement for the signature of a patent witness, and let μ, represent the mean zinc measurement for the intersection line. Select the correct hypotheses below. OA. Ho: HT-Hw=0, H₂: HT μ₁0 OB. Ho: HT-H₁0, H₂: HT-H₁0 O C. Ho: HT-HW = 0,…

Which of the following is not statistically variable? Please choose one: a. A, B system blood group in humans b. Students' birth cities c. Euler's coefficient D. Relative system grades of students to. Height in humans

The carbon monoxide (CO) level in a manufacturing plant is supposed to be about 50 parts per million (ppm). However the actual CO levels are quite variable. Ten CO measurements are taken at various times during the day: Test if the average carbon monoxide (CO) level is not 5 0 ppm at the manufacturing plant if the population standard is 8.07. Use 10% level of significance.

lili .... OFF References Mailings Review View >> Tell me Sh Draw Design Layout 12 AA Aa v ibri (Bo... 三 三三三E Styles Dictate Create x A - 130 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # of times floss per week Frequency Relative Frequency Cumulative Frequency 15 0.1154 33 1. 0.1385 51 2. 81 0.0769 3. 15 0.1154 4. 17 0.1308 93 5. 0.1538 113 6. 0.1308 130 7. a. Complete the table (Use 4 decimal places when applicable) b. What is the cumulative relative frequency for flossing 3 times per week? % English (United States) spioM 06 Focus JAN 13

Please review the SPSS output below. The output helps me to understand whether Blacks and Whites differ with respect to the average number of children they have ever had. Then answer the questions beneath the output. You may provide your answers directly in the space provide or upload a document with your response. PLEASE BE AWARE THAT I WILL NOT BE ABLE TO OPEN ANY DOCUMENTS THAT ARE HEIC Group Statistics WHAT IS RS RACE 1ST MENTION WHITE Std. Error Mean Mean Std. Devlation NUMBER OF CHILDREN 1011 1.81 1.560 049 BLACK OR AFRICAN AMERICAN 192 1.84 1.748 126 Indgendent Sanplis Test Lavent's TiS Eq.aho Lowen Upper Equalvaranpes 252.12 a. What kind of statistical test is this? b. Is Levene's test for homogeneity of variances statistically significant? How do you know? C. Which value for t do we interpret aCcording to this test? How do you know? d. Is the overalI test statistically significant? How do you know? e. What would the null and research hypotheses be for this statistical test? f.…

Please only do B, C, and D...

The poison dart frog, Dendrobates auratus, is native to Costa Rica and other areas of Central and South America. They were introduced to Hawaii and have flourished there. These frogs concentrate toxins from their food and also modify various ingested compounds into toxins called allopumiliotoxins. A small sample of these frogs was collected on Kauai Island and their overall lengths measured in cm. The data appear below. 4.1 5.2 4.3 5.1 4.7 4.5 3.9 4.6 4.3 For this sample find the following: (a) the sum of the X's; (b) the sample mean; (c) the uncorrected sum of squares; (d) the corrected sum of squares; (e) the standard deviation: