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- Data was collected for a sample of organic snacks. The amount of sugar (in mg) in each snack is summarized in the histogram below. Which statement best describes the meaning of one of the bars in the histogram? Frequency 14 12 10 8 140 150 160 170 180 190 200 210 amount of sugar (mg) The largest number of snacks have 14 mg of sugar 3 snacks have about 145 mg of sugar. 145 snacks have between 140 and 150 mg of sugar. O 145 snacks have 3 mg of sugar.A lecturer at college wanted to know if he can predict student’s quiz results by asking them tocomplete a simple survey. The result of the survey is given below: Quiz Results EQR Study Hrs Age Sex BBT MB MC AuHS LM 15 10 3 19 0 0 1 1 0 1 14 15 4 24 0 0 1 0 0 1 9 15 1 20 0 10 1 0 0 1 6 10 3 21 0 0 1 1 0 1 14 15 4 21 0 9 1 0 0 1 12 10 6 21 0 2 0 1 0 1 12 13 2 21 1 8 1 0 0 0 15 15 0 20 0 8 1 0 0 1 12 15 3 20 0 10 1 0 0 1 13 15 0.2 19 0 8 1 0 0 1 15 15 2 20 0 6 1 0 1 1 12 14 5 20 0 5 1 1 1 1 14 15 7 22 0 8 0 0 0 0 7 7 10 21 1 7 0 0 1 0 11 15 5 24 0 0 1 0 0 1 10 10 3 22 1 0 1 0 0 1 13 11 3 23 1 1 1 1 1 1 13 15 2 22 1 8 0 0 0 0 13 12 4 20 1 7 1 0 1 0 13 10 3 20 1 0 1 0 0 1 8 13 5 20 1 8 0 0 0 0 12 13 5 22 0 5 0 0 0 1 13 15 8 22 0 5 0 1 0 1 10 13 4 23 1 7 1 0 0 1 13 13 0.5 20 1 0 0 0 0 0 12 13 0.5 20 1 0 1 0 0 0 15 15 2 21 0 10 1 0 0 1 10 13 6 22 0 6 1 1 0 1 11 8 5 20 0 10 0 0 1 0 12 10 4 19 1 0 1 0 0 1 8 5 2 20 1 0 1 0 1 0 11…Would observations or interviews be more appropriate to research the following topic?How veterans find employment after exiting military service.O ObservationsO Interviews
- Urgent need help immediatelyA researcher wants to know if there is an association between feelings of hunger and aggressive behavior (in other words, is being “hangry” a real phenomenon?). He asks participants to track their hunger levels and feelings of anger and aggression over the course of a week. What is the independent variable? A) Hunger levels B) how much they've eaten C) Feelings of aggression D) There is no IV for this type of analysis E) AngerMembers of fraternities and sororities are required to volunteer for community service. Do fraternity brothers work fewer volunteer hours on average than sorority sisters? The data below show the number of volunteer hours worked for thirteen randomly selected fraternity brothers and eleven randomly selected sorority sisters. Brothers: 14 7 11 13 9. 11 8 12 7 13 10 13 Sisters: 13 19 16 11 11 19 5 10 16 17 7 | d. The p-value is ? O a e. Based on this, we should Select an answer the null hypothesis. f. Thus, the final conclusion is that ... The results are statistically significant at a = 0.05, so there is sufficient evidence to conclude that the population mean volunteer hours for fraternity brothers is less than the population mean volunteer work hours for sorority sisters. The results are statistically insignificant at a = 0.05, so there is insufficient evidence to conclude that the population mean volunteer hours for fraternity brothers is less than the population mean volunteer work…
- You may need to use the appropriate appendix table or technology to answer this question. A national standardized test consists of three parts: critical reading, mathematics, and writing. Suppose each part of the test is scored on a 200- to 800-point scale with a median of approximately 510. Scores for each part of the test can be assumed to be symmetric. Use the following data to test the hypothesis that the population median score for the students taking the writing portion of the test is 510. 635 701 439 447 464 502 405 453 471 476 447 590 337 387 514 State the null and alternative hypotheses. O Ho: Median # 510 H₂: Median = 510 O Ho: Median 2 510 H₂: Median 510 ✓ Find the value of the test statistic. T = Find the p-value. (Round your answer to four decimal places.) p-value = Using a = 0.05, what is your conclusion? O Reject Ho. There is sufficient evidence to conclude that the population median writing test score is not 510. Ⓒ Do not reject Ho. There is not sufficient evidence to…Listed below are PSAT scores and SAT scores from prospective college applicants. The scores were reported by participants who responded to a request posted by the website talk.collegeconfidential.com. Does is appear the PSAT scores can predict SAT scores? On what do you base your answer? PSAT 183 207 167 207 197 142 193 176 SAT 2200 2040 1890 2380 2290 2070 2370 1980A. P value= b. Is the p-value >,< a c. Accept, reject, or hypothesis
- Answer for question A) (Fill the table blank spaces)Section 11.2 Question #4 The table below includes results from polygraph (lie detector) experiments conducted by researchers. In each case, it was known if the subjected lied or did not lie, so the table indicates when the polygraph test was correct. Use a 0.05 significance level to test the claim that whether a subject lies is independent of the polygraph test indication. Do the results suggest that polygraphs are effective in distinguishing between truth and lies? View the table Did the Subject Actually Lie? No (Did Not Lie) Yes (Lied) Polygraph test indicated that the subject lied. 9 48 Polygraph test indicated that the subject did not lie. 30 12 Determine the test statistic. χ2= _________ (Round to three decimal places as needed.) Determine the P-value of the test statistic. P-value= ___________ (Round to four decimal places as needed.)Test the hypothesis based on the given data. Two groups of drivers were surveyed to see how many miles per week they drive for pleasure trips. The data are shown, a=0.01 Single Drivers Married Drivers 106 110 115 121 132 97 102 115 104 138 | 119 97 118 122 135 133 120 119 136 96 110 117 116 138 142 139 108 117 145 114 | 115 114 113 98 99 140 136 113 113 150 108 117 152 147 117 101 114 116 113 135 154 86 115 116 104 115 109 147 106 88 107 113 138 142 140 113 119 99 108 105 Write the hypotheses for the difference of variances. (Copy and paste this variance symbol for your answer: 8², for variance 1 & 8?, for variance 2) Ho : На: The test was run in MS Excel and generated these results. Single Drivers Maried Drivers Mean 118.9142857 117.8 Variance 261.1983193 257.6941176 Observations 35 35 df 34 34 F 1.013598299 P(F<=f) one-tai F Critical one-tail 0.484409402 2.258266094 What statistical test was used to compare the variances? Conclude about the variances of the two samples. Use the…