nction that assighs a Peal P random experiment. O a. dependent variable O b. Independent varaible O c. random variable O d. experimental variable O e. None of the above
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- Refer to the sample data for polygraph tests shown below. If one of the test subjects is randomly selected, what is the probability that the subject is not lying? Is the result close to the probability of 0.4720.472 for a negative test result? Did the Subject Actually Lie? No (Did Not Lie) Yes (Lied) Positive test results 1414 4343 Negative test results 3737 1414 The probability that a randomly selected polygraph test subject was not lying is _____.You intend to conduct a test of homogeneity for a contingency table with 8 categories in the column variable and 6 categories in the row variable. You collect data from 373 subjects. What are the degrees of freedom for the x distribution for this test? d.f. = Submit Question GhpA travel company is investigating whether the average cost of a hotel stay in a certain city has increased over the past year. The company recorded the cost of a one-night stay for a Friday night in January of the current year and in the previous year for 31 hotels selected at random. The difference in cost (current year minus previous year) was calculated for each hotel. Which of the following is the appropriate test for the company’s investigation? A one-sample zz-test for a population mean A A one-sample tt-test for a sample mean B A one-sample zz-test for a population proportion C A matched-pairs tt-test for a mean difference D A two-sample tt-test for a difference between means E
- Need help please!11:39 1 A myopenmath.com You are conducting a multinomial hypothesis test (a = 0.05) for the claim that all 5 categories are equally likely to be selected. Complete the table. Observed Expected Category Frequency Frequency A 13 В 11 C 12 17 E 23 Report all answers accurate to three decimal places. But retain unrounded numbers for future calculations. What is the chi-square test-statistic for this data? (Report answer accurate to three decimal places, and remember to use the unrounded Pearson residuals in your calculations.) What are the degrees of freedom for this test? d.f.= What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... less than (or equal to) a greater than aIDENTIFY IF IT IS| ONE-TAILED LEET TEST, ONE-TAILED RIGHT, NONE-TAILED, TWO-TAILED Given: n = 8 H.:µ = 30 x = 27 s = 3 HaiH 208 H = 208 3.
- Which of these examples violates a basic assumption for a chi-square hypothesis test? a. A participant produces responses that can be counted twice in the same category. b. The expected frequency of a category is less than 10. c. A category includes frequencies or counts instead of scores. d. The population distribution for a category is not normal.Ramos has a spinning wheel. The Spining wheel has 18 blue numbers 18 white numbers and 2 yellow numbers the table provided shows the frequency with which the ball landed on each color in 200 trials. color blue frequency 18 white frequency 18 yellow frequency 2 . At the 5% significance level do the data suggest that the wheel is out of balance?you will need to compute the expected counts to do your calculations remember that the expected counts can be computed with the formula E = np, where n is the number of trials and P is the probability of each color.Amey Lndet Outlo X Classwork for Reed Girls PE 7 X ASSESSMENT IN PROGRESS &https://www.summitlearning.org/my/assessment takes/63261905/a/7 Probability & Sampling:Question 7 Ben wants to try a new restaurant for dinner. His online search resulted in 7 new 3-star restaurants, 5 new 4-star restaurants, and 3 new 5-star restaurants. If he were to choose a restaurant at random, what is the probability that he chooses a 5-star restaurant? Select one: 47% O 33% 20% 3%
- Is Friday the 13th Unlucky? The table shows the number of hospital admissions for Friday the 6th and Friday the 13th. Assume that the two samples are randomly selected. At the 0.05 significance level, test the claim that there is no mean difference in the number of hospital admissions for Friday the 6th and Friday the 13th.(Be sure to subtract in the same direction). Friday 6th Friday 13th Difference 4 2 6 10 5 6 9 13 3 2 11 15 12 12You wish to test the following claim (Ha) at a significance level of a problem, d set represents a post-test. (Each row represents the pre and post test scores for an individual. Be careful when you enter your data and specify what your 1 and x2 are so that the differences are computed correctly.) 0.005. For the context of this PostTest - PreTest where the first data set represents a pre-test and the second data H.: Pd = 0 Ha: Hd 7 0 You believe the population of difference scores is normally distributed, but you do not know the standard deviation. You obtain the following sample of data: pre-test post-test 62.1 107.3 36.7 49 43.3 60.1 46.2 25.5 55.7 98.5 46 18 38.1 15.4 49.3 63.8 43 -16.8 45.7 52.8 40.6 64.8 40.3 71.8 48.8 40.6 33.9 84.7 52.1 57.2 40.3 34.9 49.5 56.6 48.5 63 38.8 37.2 35.5 47.2 126.91. A recent study investigated ir the distribution of gender is the same scross all scademic ranks. Dats were collected by taking a random sample of individuals from within each academic rank and then recording each individuals gender. Use the output below to conduct the appropriste hypothesis test. Use a 0.05 level of significance. a. Name of the hypothesis test b. Null and alternative hypotheses c. Test Statistic value d. p-value e. decision based on the p-value The SAS System The FREQ Procedure Frequency Table of gender by career Percent gender career Instructor Assistant Prof Associate Prof Full Prof Total Row Pct Col Pct Female 12 15 18 52 8.00 10.00 12.00 4.67 34.67 23.08 28.85 34.62 13.45 36.36 37.50 37.50 24.14 Male 21 25 30 22 98 14.00 16.67 20.00 14.67 65.33 21.43 25.51 30.61 22.45 63.64 62.50 62.50 75.86 Total 33 40 48 29 150 22.00 26.67 32.00 19.33 100.00 Statistics for Table of gender by career Statistic DF Value Prob Chi-Square 3 1.7733 0.6208 Likelihood Ratio Chi-Square…
