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236 cars as they pass by on the four lane freeway. The results are displayed in the table below. Use a level of significance of
236 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 = 0.05. D You want to see if it makes a difference which lane to be in when there is traffic. You randomly observe a. Complete the rest of the table by filling in the expected frequencies: Fre-uenc of Cars in Each Lane Expected Frequency b. What is the correct statistical test to use? Goodness-ofFit v V' c. What are the null and alternative hypotheses? H0: 0 The distribution of traffic is uniform. O The distribution of traffic is not uniform. The traffic and lanes are independent. 0 The traffic and lanes are dependent. O The traffic and lanes are independent. 0 The distribution of traffic is uniform. O The distribution of traffic is not uniform. The traffic and lanes are dependent. d. The degrees of freedom 2 3 v e. The test-statistic for this data = l ] (Please show your answer to three decimal places.) f. The p-value for this sample = l l(Plea5e show your answer to four decimal places.) \\ . g- The P-Value is G h. Based on this, we should i. Thus, the final conclusion is... Q There is sufficient evidence to conclude that the distribution of traffic is not uniform. Q There is sufficient evidence to conclude that traffic and lanes are dependent. Q There is insufficient evidence to conclude that traffic and lanes are dependent. Q There is sufficient evidence to conclude that the distribution of traffic is uniform. Q There is insufficient evidence to conclude that the distribution of traffic is not uniform. - where not met in 200 iterations A recent national report states the marital status distribution of the male population age 18 or older is as follows: Never Married (32%), Married (55%), Widowed (2.3%), Divorced (10.7%). The table below shows the results of a random sample of 1996 adult men from California. Test the claim that the distribution from California is as expected at the a = 0.01 significance level. a. Complete the table by filling in the expected frequencies. Round to the nearest whole number: Fre - uencies of Marital Status Divorced 230 ' b. What is the correct statistical test to use? Select an answer v c. What are the null and alternative hypotheses? H02 0 Marital status and residency are dependent. O The distribution of marital status in California is not the same as it is nationally. O The distribution of marital status in California is the same as it is nationally. 0 Marital status and residency are independent. 0 Marital status and residency are independent. 0 Marital status and residency are dependent. O The distribution of marital status in California is not the same as it is nationally. O The distribution of marital status in California is the same as it is nationally. d. The degrees of freedom = ' e. The test-statistic for this data = (Please show your answer to three decimal places.) f. The p-value for this sample = '(Please show your answer to four decimal places.) g- The P-ValUE' 1'5 a h. Based on this, we should i. Thus. the final conclusion is... 0 There is sufficient evidence to conclude that the distribution of marital status in California is not the same as it is nationally. 0 There is sufficient evidence to conclude that marital status and residency are dependent. Q There is sufficient evidence to conclude that the distribution of marital status in California is the same as it is nationally. Q There is insufficient evidence to conclude that marital status and residency are dependent. O There is insufficient evidence to conclude that the distribution of marital status in California is not the same as it is nationally. 3) A researcher wants to know if the news station a person watches is a factor in the amount of time (in minutes) that they watch. The table below shows data that was collected from a survey. \"I -Im M -- --- Assume that all distributions are normal, the three population standard deviations are all the same, and the data was collected independently and randomly. Use a level of significance of ct : 0.1. Ho: #1 : #2 : #3 H1: At least two of the means differ from each other. 1. For this study, we should use 2. The test-statistic for this data = ' | (Please show your answer to 3 decimal places.) 3. The p-value for this sample = l ' (Please show your answer to 4 decimal places.) 4. The p-value is a 5. Base on this, we should Select an answer v hypothesis 6. As such, the final conclusion is that... 0 There is insufficient evidence to support the claim that station is a factor in the amount of time people watch the news. 0 There is sufficient evidence to support the claim that station is a factor in the amount of time people watch the news. Three students, Linda, Tuan, and Javier, are given laboratory rats for a nutritional experiment. Each rat's weight is recorded in grams. Linda feeds her rats Formula A, Tuan feeds his rats Formula B, and Javier feeds his rats Formula C. At the end of a specified time period, each rat is weighed again, and the net gain in grams is recorded. Assume that all distributions are normal, the three population standard deviations are all the same, and the data was collected independently and randomly. Use a level of significance of a = 0.1. Ho: #1 = #2 = #3 H1 : At least two of the means differ from each other. 1. For this study, we should use 2. The test-statistic for this data = ' (Please show your answer to 3 decimal places.) 3. The p-value for this sample = ' i (Please show your answer to 4 decimal places.) 4. The p-value is a 5. Base on this, we should Select an answer v hypothesis 6. As such, the final conclusion is that... Q There is insufficient evidence to support the claim that nutritional formula type is a factor in weight gain for rats. 0 There is sufficient evidence to support the claim that nutritional formula type is a factor in weight gain for rats
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