A variable contains five categories. It is expected that data are uniformly distributed across these five categories. To test this, a sampl of observed data is gathered on this variable resulting in frequencies of 27, 30, 29, 21, and 24. Using a = .01, the degrees of freedom f this test are O 4 O 3 05 O 2
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- The following plat represents the prices in dollars of general admission tickets for the last 26 concerts at one : Use the data provided to the quartiles First Quartile and the Third QuartileThe table below shows the scores of a group of students on a 10-point quiz. Test Score Frequency 3 4 4. 6 7 8 9. 1. 10 The mean score on this test is: The median score on this test is: Question Help: D Video 1 D Video 2 Submit Question Type here to search F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 C@ %23 & * 2 4. 7 8. W E Y U A S J K « CO 团 LLYou want to see if it makes a difference which lane to be in when there is traffic. You randomly observe 296 cars as they pass by on the four lane freeway. The results are displayed in the table below. Use a level of significance of a = 0.10. a. Complete the rest of the table by filling in the expected frequencies: Frequency of Cars in Each Lane Outcome Frequency Expected Frequency Lane 1 73 Lane 2 63 Lane 3 Lane 4 85 75 b. What is the correct statistical test to use? Select an answer c. What are the null and alternative hypotheses? Ho: O The traffic and lanes are dependent. O The traffic and lanes are independent. O The distribution of traffic is not uniform. OThe distribution of traffic is uniform. H₁: O The traffic and lanes are dependent. O The distribution of traffic is not uniform. O The distribution of traffic is uniform. O The traffic and lanes are independent. d. The degrees of freedom = e. The test-statistic for this data = (Please show your answer to three decimal places.)
- Research department of the Municipal hospital in Prampram collected the mass (kg) of patients :it visited the health facility on March, 2018. Below are the masses (kg) of 40 patients who visited •.r hospital for analysis: 55 70 57 73 55 59 64 72 60 48 58 54 69 51 63 78 75 64 65 57 71 78 76 62 49 66 62 76 61 63 63 76 52 76 71 61 53 56 67 71 a) Construct a frequency table for the data using class width of 5. b) Calculate the mean, median and the standard deviation of the mass of the distributior c) Construct the cumulative graph.Take the following set of scores and construct a frequency distribution. You may want to copy and paste these questions into a separate document so you can answer them. Be sure to complete all of the columns labeled below, AND calculate N, ΣX, and ΣX2. Your numbers: 5, 3, 5, 5, 2, 1, 5, 1, 2, 1 X X2 f fX fX2 p p(100) cf c% N = ΣX = ΣX2 =The population of a certain country was studied in an article. The authors examined the different occupations for males and females in the country. The accompanying table is a frequency distribution of occupation type for males taking part in a survey. (Note: M=manufacturing, N=nonmanufacturing.) Complete parts (a) through (d) below. E Click the icon to view the frequencies of occupation type for surveyed males. a. Find the probability that a randomly selected male's occupation is clerk. O Frequencies of Olupation Types The probability that a randomly selected male's occupation (Type an integer or a decimal. Round to three decimal places as needed.) clerk is Occupation Frequency O b. Find the probability that a randomly selected male's occupation is administrative. Administrative/M 2089 Administrative/N 6636 The probability that a randomly selected male's occupation is administrative is (Type an integer or a decimal. Round to three decimal places as needed.) Technical/M 2389…
- * The table shows a frequency distribution of Mathematic session marks for 120 students in the second stage at engineering faculty. Find the Quartiles of the distribution, then 30 students have marks equal to 65 or lower? Choose either True or : False Mark: 30-39 40-49 50-59 60-69 70-79 80-89 90-100 Number of Students 1 3 11 21 43 32 9 False O True OAn experiment was conducted in which two fair dice were thrown 100 times. The sum of the dice was then recorded. The following frequency histogram gives the results. Sum of Two Dice 25 20 5 0 - 2 3 5 6 7 8 9 10 11 12 Value of Dice (a) What was the most outcome of the experiment?Blank 1 (b) What was the least frequent? Blank 2 (c) How many times did we observe a 7? Blank 3 (d) Determine the percentage of time a 7 was observed. Blank 4 (e) Describe the shape of the distribution (skewed left, skewed right, bell-shaped) Blank 5 Blank 1 Add your answer Blank 2 Add your answer Blank 3 Add your answer Blank 4 Add your answer tes remaining FrequencyYou want to see if it makes a difference which lane to be in when there is traffic. You randomly observe 296 cars as they pass by on the four lane freeway. The results are displayed in the table below. Use a level of significance of a = 0.10. a. Complete the rest of the table by filling in the expected frequencies: Frequency of Cars in Each Lane Outcome Frequency Expected Frequency Lane 1 73 Lane 2 59 Lane 3 79 Lane 4 85 b. What is the correct statistical test to use? Select an answer < c. What are the null and alternative hypotheses? Ho: The traffic and lanes are independent. The distribution of traffic is not uniform. The distribution of traffic is uniform. The traffic and lanes are dependent. H1: The traffic and lanes are independent. O The distribution of traffic is uniform. The distribution of traffic is not uniform. The traffic and lanes are dependent.
- Do college majors have any effect on starting salaries after graduation? 350 recent graduates were surveyed about their majors in college and their starting salaries after graduation. Table 1 below shows the data. Conduct a test of independence at the 99% level of confidence. Round to 2 decimal places. Observed Frequencies Major English Engineering Nursing <50K 50-69K 69K+ ТОTAL 20 20 25 65 10 35 50 95 5 15 25 45 Business 15 25 25 65 Psychology 10 40 30 80 ТОTAL 60 135 155 350 a. Write the Ho in your own words: b. Type of test to conduct (write one of "Z-test", "t-test" or "Chi-squared test" in the blank): c. The test-statistic calculated value is: d. The critical value is: e. We fail to reject the null hypothesis (Write "true" or "false" in the blank):You want to see if it makes a difference which lane to be in when there is traffic. You randomly observe 372 cars as they pass by on the four lane freeway. The results are displayed in the table below. Use a level of significance of a = 0.01. a. Complete the rest of the table by filling in the expected frequencies: of Cars in Each Lane Frequency Outcome Frequency Expected Frequency Lane 1 89 Lane 2 98 Lane 3 92 Lane 4 93 b. What is the correct statistical test to use? Select an answer Y C. What are the null and alternative hypotheses? Ho: OThe distribution of traffic is not uniform. O The traffic and lanes are independent. O The distribution of traffic is uniform. KO The traffic and lanes are dependent. Hi : OThe distribution of traffic is uniform. OThe traffic and lanes are independent. O The traffic and lanes are dependent. O The distribution of traffic is not uniform.The following 10 values represented in the frequency table are the race finish times in hours for a randomly selected group of participants in an extreme 10-kilometre race (a 10k race with obstacles). Which of the following is closest to the mean of the data set? Hours f 0.9 1 1 1.1 1.2 1 1.3 1.4 1.5 N = 10 O 1.5 hours O 1.37 hours O 1 hours O 1.2 hours 21