Calculate the​ 95% confidence intervals for the proportion of children​ surviving, and the proportion of​ non-crew adult passengers surviving. We want to use the given data to make inferences about the general population of all large boat​ crashes, so the data set should be treated as a random sample for this purpose. The​ 95% confidence interval for survival rate amongst​ non-crew adults runs from?  (Round to one decimal place as needed. Use ascending​ order.) Frequency table results for Adult/Child: Group: Survival=Alive Count = 711 Adult/Child Frequency Relative Frequency Adult 654 0.91983122 Child 57 0.080168776 Frequency table results for Adult/Child: Group: Survival=Dead Count = 1490 Adult/Child Frequency Relative Frequency Adult 1438 0.96510067 Child 52 0.034899329 Frequency table results for Class: Group: Survival=Alive Count = 711 Class Frequency Relative Frequency Crew 212 0.29817159 First 203 0.28551336 Second 118 0.16596343 Third 178 0.25035162 Frequency table results for Class: Group: Survival=Dead Count = 1490 Class Frequency Relative Frequency Crew 673 0.45167785 First 122 0.081879195 Second 167 0.11208054 Third 528 0.35436242

or each of the situations below, name the statistical test that you would use to analyze the data. It is possible that some test may be used more than once, or not at all. Options: one-sample z, two-sample z, one-sample independent-measures t, one-sample repeated-measures t,one-way independent-measures ANOVA, one-way repeated-measures ANOVA, two-way independent-measures ANOVA,Pearson correlation, Spearman correlation, point-biserial correlation, simple regression, multiple regression,chi-square for independence, chi-square for goodness-of-fit, binomial,Wilcoxon Rank Sums test, Wilcoxon Signed Rank T, Mann-Whitney U, Kruskal-Wallace H, Friedman chi-square 11. __________________________________________ An art professor is accused of showing favoritism to art majors in her courses. To defend her grading practices, the Dean compares the numbers of As, Bs, Cs, Ds, and Fs awarded to majors and minors, and finds that no favoritism exists.12. __________________________________________ Studies…

Construct a 90% confidence interval of the population mean age for the college students in Example #5 with the sample size increased to 30 students. Compare your answer with Example #5 (picture). a. Identify n, x̅, ?, and zc, and find E.b. Find the left and right endpoints of the confidence interval.c. Interpret the results and compare them with Example #5.

QUESTION 22 A car insurance company wanted information about the age of its customers. A researcher computed 90%, 95%, 97%, and 99% confidence intervals for the population mean age of the customers. Which of the following intervals is the the 97% confidence interval for the population mean age? (36.30, 39.70) O (36.70, 39.30) (36.56, 39.44) (36.91, 39.09)

Part b ?

The data in the table to the right are based on the results of a survey comparing the commute time of adults to their score on a​ well-being test. Complete parts​ (a) through​ (d) below.   LOADING... Click the icon to view the table of critical values of the correlation coefficient. a) Which variable is likely the explanatory variable and which is the response​ variable?     Critical Values for Correlation Coefficient   n   3 0.997 4 0.950 5 0.878 6 0.811 7 0.754 8 0.707 9 0.666 10 0.632 11 0.602 12 0.576 13 0.553 14 0.532 15 0.514 16 0.497 17 0.482 18 0.468 19 0.456 20 0.444 21 0.433 22 0.423 23 0.413 24 0.404 25 0.396 26 0.388 27 0.381 28 0.374 29 0.367 30 0.361 n   (a) Which variable is likely the explanatory variable and which is the response​ variable? The explanatory variable is…

INSTRUCTION: Choose the appropriate statistical test from the choices below and do not need an explanation. A. One-Sample t-Test B. Two-Sample t-Test C. Paired-Sample t-Test D. One-Way ANOVA E. Two-Way ANOVA F. Correlational Analysis G. Regression Analysis   1. What appropriate statistical test should be performed if a researcher would like to determine if there is a significant difference in the Systolic blood pressure (SBP) between Male and Female? 2. What appropriate statistical test should be performed if a researcher would like to determine if there is a significant difference in the Serum Creatinine (SCr) between "Under 60" and "60 and Above"? 3. What appropriate statistical test should be performed if a researcher would like to determine if there is a significant difference in the "Cholesterol" level before ("Pre") and after ("Post") the treatment or therapy? 4. What appropriate statistical test should be performed if a researcher would like to determine if there is a…

You are a researcher studying a certain species of fish in a local lake.  You gather a random sample of 19 fish of this species and record the lengths (in centimeters) of the fish. The data is displayed in the table below.  Estimate the mean length of all fish of this type in the lake.  Use a 99% confidence level. 9.1 9 8.6 5.8 9.8 7.4 9.1 9.5 8.2 8.9 9.3 7.8 9 9.6 10.4 13.6 7.2 10.1 8.9   a)  Find the confidence interval:  b) What is the margin of error of your interval?  c) Interpret your 99% confidence interval in context

d and e only

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