Dastudy of 411 airplana Crask landngs showed that the proba bility the pilot will Survive is .948. Con fidence interval to estimate the probabi lity that a pi ot will landing. Find a 99% Survive a Crash

a. Find the standard deviation of the number of members per component. (Round your answers to 2 decimal places.) b. Find the coefficient of skewness, using the software method. (Round your answer to 2 decimal places.) c. What are the limits for outliers? (Round your answers to the nearest whole number. Negative amounts should be indicated by a minus sign.)

(12) adults said they would travel to outer space in their lifetime, given the chance. Estimate the true proportion of adults who would like to travel to outer space with 88% confidence (Round to two decimal places). Estimate population proportion: New York Times poll found that 329 out of 763 12

The interquartile range is more susceptible to outliers in the data than is the range A. True B. False

Express the confidence interval (85%,91.2%) in the form of ˆp±E.% ± %

Suppose that a recent article by a historian stated that the mean time spent in jail by a first–timeconvicted burglar in the 20th century was 2.5 years. A study was then done to see if the mean time has increasedin the new century. A random sample of 26 first-time convicted burglars in a recent year was picked. The meanlength of time in jail from the survey was 3 years. Suppose that it is somehow known that the population standarddeviation is 1.8 years and that the population is normally distributed.The hypotheses can then be framed as:H0 : μ = 2.5 vs. Ha : μ > 2.5(a) Which of the following figures (next page) best describes the p-value for this hypothesis testingproblem. Explain your reasoning. (numbers above red shaded area represent the corresponding probabilities). (b) Write the decision and conclusion for this hypothesis testing problem if the significance level, α,is 0.1.

Create an example of 2 data sets with the same range and the same number of values that have different standard deviations

If a 95% Confidence for the Population Proportion is (0.56, 0.78), fınd its Margin of Error.

Find z* for a confidence level of 83%. Give your answer to 3 decimal places.

Researchers are looking to see what proportion of students will report cheating if they see it happen. A SRS of 172 undergraduates is collected and 19 respond that they would report cheating if they saw it happen. What is the point estimator?