Scientists used mathematical models to predict the growth of world population, computer converted that data into a design .1 model .a .b .C .a structure .b sample .a
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- Statistics and Variables: Determine whether the following variables are qualitative or quantitative.…..Check for accuracy and respond the last questions 2. For this problem, use Chapter 11 Data Set 3. We want to know if urban and rural residents both have the same attitude toward gun control. a. What is the null hypothesis? The null hypothesis concludes that there is no difference in attitudes toward gun control between urban and rural residents. b. What is the research hypothesis? The research hypothesis suggests that there is a difference in attitudes toward gun control between urban and rural residents. c. Will you be conducting a one-tailed or a two-tailed test? Why? In this case I would conduct a two-tailed test because i’m interested in whether there is a difference in attitudes toward gun control between urban and rural residents, regardless of which direction that difference follows. e.- What is the p-value (hint: it is under “sig” in the output table)? The P-value is 0.44. Do you reject the null hypothesis or fail to reject the null? What do you conclude about urban and…
- 5. See pictures to solveResearchers wondered whether the size of a person's brain was related to the individual's mental capacity. They selected a sample of 5 females and 5 males and measured their MRI image pixel counts and IQ scores. Females Males MRI IQ MRI IG The data is reported to the right. Complete parts (a) through (d) below 139 858,472 140 955,003 935,494 924,059 1.079.550 1,001.121 Click the icon to view the critical values table. 991,305 138 141 857,782 833,868 790,619 133 135 132 141 135 140 AMRI 1,080,000- AIO 145 AIO 145- AMRI 1,080,000 780,000 130 130 780,000 130 780,000 780,000 130 1,080,000 145 1,080,000 MRI 145 MRI (b) Compute the linear correlation coefficient between MRI count and IQ. Are MRI count and IQ linearly related? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. (Round to three decimal places as needed.) A. Yes, MRI count and IQ are linearly related since the linear correlation coefficient is O B. No. MRI count and IQ are not…help please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working
- 3. Match the columns. Write your answer with the corresponding number and letter, for example, 3e. 1. secondary research 2. primary research 3. secondary data 4. primary data 5. source of secondary data a. Geodemographic information system b. Government statistics C. Search the literature d. Conduct interviews e. Completed questionnairesThere is a data set called "data". Choose the right command to extract all values of the variable "weight". data$weight O d$weight O weight$data data$wgtShoe Print (cm) 28.8 28.8 32.1 32.6 27.5 Foot Length (cm) 25.2 24.9 27.5 27.6 25.9 Height (cm) 181.7 173.5 186 169.1 171 Police sometimes measure shoe prints at crime scenes so that they can learn something about criminals. Listed below are shoe print lengths, foot lengths, and heights of males. Construct a scatterplot, find the value of the linear correlation coefficient r, and find the P-value of r. Determine whether there is sufficient evidence to support a claim of linear correlation between the two variables. Based on these results, does it appear that police can use a shoe print length to estimate the height of a male? Use a significance level of α = 0.05. OA. 200- Height (cm) 160+ 25 35 Shoe Print (cm) The linear correlation coefficient is r= 0.180 (Round to three decimal places as needed.) Determine the null and alternative hypotheses. Ho p = 0 H₁ p 0 (Type integers or decimals. Do not round.) The test statistic is t = 0.32. (Round to two decimal places as needed.) The P-value…
- upvote would be given! Please check the table for the data. STATISTICS The Selecta Ice Cream Company caters to a variety of customers, both children and adult. To better serve their customers, they would like to determine whether children and adults vary in their ice-cream flavor preference. DATA: "Chi-Squared" Lab.sav Do the following: a. Present the result in tables (You may use excel) b. Make a conclusion (Paragraph) 1 1 1 2 1 1 3 2 1 4 1 1 5 1 1 6 2 1 7 2 1 8 1 1 9 3 1 10 1 1 11 1 1 12 3 1 13 1 1 14 3 1 15 1 1 16 3 2 17 3 2 18 3 2 19 2 2 20 1 2 21 3 2 22 3 2 23 1 2 24 3 2 25 1 2 26 2 2 27 3 2 28 3 2 29 3 2 30 3 2A city wants to know if a new advertising campaign to make citizens aware of the dangers of driving after drinking has been effective. The accompanying table shows the number of drivers who have been stopped with more alcohol in their systems than the law allows for each day of the week in the week before and the week a month after the campaign starts. Assume that the data from each population is Normally distributed. Complete parts a through i below. A. Are the data paired? Explain. B. Compute the mean difference C. Compute the standard deviation of the differences. D. Compute the standard error of the mean difference. E. Find the value of the t-statistic. F. How many degrees of freedom does the t-statistic have? G. Is the alternative one- or two-sided? Explain. H. What is the P-value associated with this t-statistic? Assume that the other assumptions and conditions for inference are met.Question Completion Status: Company A, Company B, and Company C sold a number of stocks each month in 2019. Each company described their stock sales in the box plots shown below. Which box plot is most left-skewed? Company A Company B Company C Save All Ar Click Save and Submit to save and submit. Click Save All Answers to save all answers. * Relative Worksheet Py....docx Reading - Mappi..pdf A W MLK Letter -2.pdf W Worksheet - W....docx 四田07A DIC. ostv 11
