8- Degrees of freedom of 12, and significance level of 0.01, thus the critical value of X2 from the table is : 26.271. Select one: True
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8-
Degrees of freedom of 12, and significance level of 0.01, thus the critical value of X2 from the table is : 26.271.
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- You want to see if it makes a difference which lane to be inwhen there is traffic. You randomly observe 296 cars as theypass by on the four lane freeway. The results are displayed inthe table below. Use a level of significance of a = 0.10.a. Complete the rest of the table by filling in theexpected frequencies:Frequency of Cars in Each LaneOutcome Frequency Expected FrequencyLane 173Lane 2Lane 3Lane 4597985In one of the Stat 2 sections, the students in the section have an average height of 64 inches, with a standard deviation of 3 inches. The GSI happens to be 68 inches. Express the height of the GSI in standard units, relative to the students in the section. Choose the answer below that is closest. Group of answer choices 1.67 3.0 1.5 1.33 4.0 PreviousNextA researcher wants to determine the sensitivity of mammograms to determine how effective they are at diagnosing women who have breast cancer. Assume the researcher obtained the above results from a study, calculate and interpret the sensitivity of mammograms for detecting breast cancer. Frequency of Breast Cancer Cases Frequency of Non-Cancer Cases Frequency of Individuals Who Screened Positive 17 5 Frequency of Individuals Who Screened Negative 8 77 Group of answer choices: a. A total of 66.67% of individuals who have breast cancer test positive for breast cancer when using a mammogram as the primary diagnostic test for breast cancer. b. A total of 68% of individuals who have breast cancer test positive for breast cancer when using a mammogram as the primary diagnostic test for breast cancer. c. A total of 70.59% of individuals who have breast cancer test positive for breast cancer when using a mammogram as the primary diagnostic test for breast cancer. d. A total of…
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