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Estimating the individual score using normal distribution.
The distribution of scores on the SAT is approximately normal with a mean of µ = 500 and a standard deviation of σ = 100. For the population of students who have taken the SAT, if the stage college only accepts students from the top 60% of the SAT distribution, what is the minimum SAT score needed to be accepted?
Does the data prove a significant difference in mean times?
If student is chosen at random, determine the probability that he or she is sophomore and owns a credit card.
At the .05 level of significance, can we conclude that those joining Weight Reducers on average will lose less than 10 pounds? Determine the p-value.
If the variability of the filling machine is reduced to 0.025 ounce, verify that this will lower the required average amount of coffee to 4.050 ounces and yet keep 98 percent of the jars above 4 ounces.
Find out sample correlation coefficients of (I) age with dry weight, and (2) age with log 10 dry weight. Interpret your results.
Which of the following models are appropriate to forecast a time series whose amplitude increases over time?
LPP using the graphical method. Solveout the following linear programming problem utilizing the corner point method.
At the .01 significance level, can she conclude that there is a difference between how well the different tutorials work for the students?
Then describe trade-offs which will happen when you lower sample to $10,000 to meet their budget.
Test whether the weight reducers on average will lose less than 10 pounds using P-value approach.
Compute the sample variance and the sample standard deviation for these data (to 2 decimals).
Suppose that population has normal distribution. Determine a 95 percent confidence interval for population standard deviation sigma.
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