Given components with the following reliabilities: A = 0.99, B = 0.98, C= 0.97. What is the reliability of the system on the left? B O Rs = 0,9998 O Rs = 0.9994 O Rs = 0.99994
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- With a data set containing d=15 features and N=12,000 observations, what is the dimensionality of the covariance matrix of the predictors? If we were to represent the predictors with a multivariate normal (Gaussian) distribution, how many distribution parameters would need to be estimated from the feature dataA consumer magazine wants to figure out which of two major airlines lost a higher proportion of luggage on international flights. The magazine surveyed Standard Air (population 1) and Down Under airlines (population 2). Standard Air lost 45 out of 600 bags. Down Under airlines lost 30 of 500 bags. Does Standard Air have a higher population proportion of lost bags on international flights? Which of the following is the correct competing hypotheses?According to the game data, what is the mean score for the Goodyear Silents and their opponent? SILENTS OPPONENTS 7 7 0 3 6 0 9 0 15 0 6 13 14 0 0 0 9 10 0 0 0 6
- In the COVID-19 data set, there are several questions that participants answer about the reactions of their government to the pandemic, as well as questions about their own well-being, in terms of measures of distress, such as anxiety and depression. This data was collected quite early in the pandemic, near the beginning of the first wave in late March. One might ask whether how one viewed their government might affect one's concerns about the health of their family and themselves. What type of procedure might you use to see whether there was an association between attitudes towards governtment and worries about health? Group of answer choices Correlation Related Samples t Test Chi-Square Goodness of Fit Test Oneway ANOVABased on the following two tables, what conclusions can you draw? Contrast between the expected values and the observed values. H1: The gender and afraid to walk at night in your neighborhood are not independent variables. H0: The gender and afraid to walk at night in your neighborhood are independent variables.According to the following data: CFR Covid Case Fatality Rate 2020 CFR Covid Case Fatality Rate 2022 World 2.32 1.24 China 5.32 2.75 Italy 3.49 1.04 USA 1.79 1.23 New York 3.74 1.32 Louisiana 2.20 1.39 What might be the likely changes in test sensitivity vs. specificity, population mobility and behavior (quarantine), and population demographics when comparing CFR Covid cases from 2020 vs. 2022?
- In an experiment, four different brands of fertilizer (A, B, C, and D) were tested on the growth of tomato plants. The experiment was repeated three times, and the average growth of the plants was measured. What is the purpose of performing a Friedman Test in this experiment?In the Salsberry (2003) study shared in this weeks module, the researcher presents the following results of the statistical analysis: "With respect to family configuration, 20% of the children enrolled in Medicaid, 29% of the uninsured children, and 44% of the privately insured children were in families where the adults were in a “partnered relationship”, [χ2 (2,N = 392) = 21.95; P = .0001]" What type of analysis does this statement reflect?