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Q1) There are 4 inspectors who are scheduled to work 7:00 AM - 3:00 PM shift every day at nearby airport. Each day there is a 0.15 chance that each inspector will suddenly not report for work. If there ever are less than three inspectors on duty, security checkpoint should be shut down until substitute inspector(s) can be brought in to work remainder of shift. Let Y be number of inspectors which show up for 700 AM - 300 PM shift on given day. Find out probability that security checkpoint will be shut down tomorrow? Past data point to that variance of measurements made on sheet metal stampings by experienced quality-control inspectors is 0.025 square inch. Such measurements made by the inexperienced inspector could have too large variance (perhaps as of inability to read instruments properly) or too small variance (perhaps because unusually high or low measurements are discarded). If new inspector measures 101 stampings with variance of 0.13 square inch, test at 0.05 level of significance whether inspector is making satisfactory measurements. Suppose normality.
What can you conclude regarding the information? Who tends to order the most or least number of condiments?
The mean time to download an Google video is 1 minute 30 seconds. Suppose the download time is normally distributed with standard deviation of 20 seconds.
The best estimator or appreciative for the population proportion is 0.45. How large must the sample be?
A sample of size 36 results in a sample mean of 7.1. The value of the test statistic is ____
Test whether there is a difference in the mean of times men and women and determine the p-value.
Inspect table produced in question 2 above. Comment on relative sensitivity of minimum sample size to actual proportion and to desired half width.
We recalculated our comparison of ideal number of children, this time only for women, separating them into two groups, those who indicated that they were "very happy" or "not at all happy" with life.
Using the empirical rule what percentage of adults is 25 - 45 has iq score bet 70 and 130.
The Pearson Product-Moment Correlation Coefficient (r) is a measure of linear relationship between two variables.
A concessionaire for the local ballpark has made a table of conditional values for the different alternatives also states of nature
Estimate the population means growth in 1 year for 14-year-old boys. Make a point estimate and an 80% confidence interval estimate.
If random samples, each with n = 4 scores, are selected from a normal population with MK = 80 and o=10
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