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A person gets a score of 52 on a test with a mean of 56 and standard deviation of 4. What would the person's score be on a scale with a mean of 100 and standard deviation of 15?
A computer system uses passwords constructed from the 26 letters (a to z) or 10 integers (0 to 9). Suppose there are 10000 users on the system with unique passwords. A hacker randomly selects (with replacement) passwords from the potential set.
Determine a 95% confidence interval for the mean efficiency of a given batch of motors. If we want to cut the confidence interval by 1/3, how many motors should be tested?
chebyshevs inequality for regular worker the preparation time for daily work needs 35 minutesday and with standard
Is the hypothesized difference (0.00) within the interval? Given the presence or absence of the 0.00 value within the interval, is this consistent with the findings of the hypothesis test?
a new design for the braking system on a certain type of car has been proposed. for the current system the true average
Calculate the mean, median, and standard deviation for ounces in the bottles and construct a 95% Confidence Interval for the ounces in the bottles.
Determine the minimum-cost mixture that satisfies the daily demand for Sugar Sweet. Can the bounded variable simplex method used to solve this problem?
Comment on the changes in the variables scores. The correlation coefficient (r) and the coefficient of determination (r2) found in the Model Summary indicate the strength of the linear trend between the variables.
Would you accept that day's production of concrete at the given level of confidence? Assume that, from past slump test results, the concrete slumps are known to be normally distributed.
Using this he gives a cost estimate of $24,000 for a new order for 500 units. Is this a reasonable cost estimate? Explain why or why not. Looking at the data on file, can you give a better cost estimate?
American youngsters aged 6 to 19, 15% were seriously overweight. Calculate and interpret a confidence interval using a 99% confience level for the proportion of all american youngsters.
How does hypothesis testing contribute to the scientific knowledge base? What is one example of a null hypothesis statement?
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