If an independent-groups t-test has 13 subjects in each group, then the degrees of freedom are _____. A. 26 B. 12 C. 13 D. 24
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- An unfair coin is tossed 14 times. This coin comes up heads 60% of the time and tails 40% of the time. How likely are you to see exactly 10 heads? Round to four decimal places. A.) .7143 B.) .2857 C.) .0136 D.) .1549Classify the two given samples as independent or dependent. Sample 1: Sample 2: The gas mileage for 31 trucks The gas mileage for 34 cars Choose the correct answer below. O A. The two given samples are independent because different vehicles were sampled. O B. The two given samples are dependent because the same vehicles were sampled. OC. The two given samples are independent because the same vehicles were sampled. O D. The two given samples are dependent because different vehicles were sampled. Click to select your answer.Given a data set, how do you know whether to calculate o or s? Choose the correct answer below. O A. When given a data set, one would have to determine if it represented the population or if it was a sample taken from the population. If the data are a population, then o is calculated. If the data are a sample, then s is calculated. O B. If the given data set contains a large number of entries, then s is calculated. If the data set contains a small number of entries, then o is calculated. O C. If the given data set contains a large number of entries, then o is calculated. If the data set contains a small number of entries, then s is calculated. O D. When given a data set, one would have to determine if it represented the population or if it was a sample taken from the population. If the data are a population, then s is calculated. If the data are a sample, then o is calculated.
- The numbers of clients, during a special event, of several tourist agencies in 7 11 27 21 Luzon are given as: 6 10 25 20 2 29 22 15 12 17 9 3 31 24 16 13 19. The 4th decile is O 13 12What conclusions do you reach from this chart? A. There is an approximately equal percentage of males and females who enjoy shopping for clothing. B. There is a higher percentage of males who enjoy shopping for clothing. C. There is a higher percentage of females who enjoy shopping for clothing. D. The side-by-side bar chart is inconclusive. O A. Yes- No- 0. 100 200 300 400 Frequency Male C Femaletatcrunch 2 Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (c) below. Click the icon to view at distribution table. W S X H d a. What is the number of degrees of freedom that should be used for finding the critical value t/2? df = 0 (Type a whole number.) b. Find the critical value t/2 corresponding to a 95% confidence level. ¹ x/2 = (Round to two decimal places as needed.) c. Give a brief general description of the number of degrees of freedom. Tech help # 3 OA. The number of degrees of freedom for a collection of sample data is the total number of sample values. OB. The number of degrees of freedom for a collection of sample data is the number of sample values that can vary after certain restrictions have been imposed on all data values. 20 E D с F3 $ 4 888 R F V % 5 T G F5 B MacBook Air Y H 8 7 N F7 TEE U J 00* 8 ►II M F8 9 K O L command F10 P { alt option (13.046,22.15) x=17.598 Sx=16.01712719 n=50 1 Next…
- A categorical variable has three categories, with the frequencies of occurrence below. a. Compute the percentage of values in each category. b. What conclusions can you reach concerning the categories? Category Frequency A 9 B 26 C 15A campus survey asked 750 university students which meal (breakfast, lunch, dinner) they ordered the most often from the school cafeteria. A.) What is the variable? - is it Meal? B.) What kind of variable is it? - is it ordinal? C.) What is the population of this study? Is it descriptive statistics?A survey of 400 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school. Undergraduate Major Graduate School Business Engineering Other Total Yes 33 43 61 137 No 90 105 68 263 Total 123 148 129 400 What percentage of the students' undergraduate major is Engineering? a. 65.75% b. 520% c. 152% d. 37%
- - Attendance and Grades Read the following on attendance and grades, and answer the questions in the discussion board. A study conducted at Manatee Community College revealed that students who attended class 95 to 100% of the time usually received an A in the class. Students who attended class 80 to 90% of the time usually received a B or C in the class. Students who attended class less than 80% of the time usually received a D or an F or eventually withdrew from the class. Based on this information, attendance and grades are related. The more you attend class, the more likely you will receive a higher grade. If you improve your attendance, your grades will probably improve. Many factors affect your grade in a course. One factor that you have considerable control over is attendance. You can increase your opportunities for learning by attending class more often. a. What are the variables under study? b. Are descriptive, inferential, or both types of statistics used? c. What is the…A random sample of 7 oak trees from two forests was gathered. The results are shown below. Height of Trees (feet) Forest A Forest B 70 92 78 82 84 66 83 76 78 72 88 79 77 85 Based on the samples, which statement best compares the height of the oak trees in each forest? O The oak trees in Forest A are generally taller and have less variabillity than the oak trees in Forest B. The oak trees in Forest A are generally shorter and have less variabillity than the oak trees in Forest B. O The oak trees in Forest A are generally taller and have more variabillity than the oak trees in Forest B. The oak trees in Forest A are generally shorter and have more variabillity than the oak trees in Forest B.Consider the set of observations: 2, 5, 6, 0, 7, 9, 10. The values of the first and third quartiles are Q1 and Q3 are Select one: O a. 6 and 10 O b. 2 and 9 O c. 5 and 7 O d. 6 and 9