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Probability values for specified events. A normal population has a mean of 80.0 and a standard deviation of 14.0
[a] Calculate the probability of a value between 75.0 and 90.0
[b] Calculate the probability of a value of 75.0 and less.
[c] Calculate the probability of a value between 55.0 and 70.0
[d] Calculate the probability of a value of 85.0 and more.
Determine the coefficient of correlation between the two variables. Interpret the value.
The 95% prediction interval for a new patient with a 2-day cholesterol level of 220 is
Conduct a marketing experiment in which students are to taste one of two different brands of soft drink
To test whether there is a significant mean difference among the three.
Test hypothesis that mean weight of 2 sheets are equal against alternative that they are not(suppose equal variances). Use α=0.05 and suppose equal variances. Determine the P value.
Conduct post hoc comparisons with the LSD method. Which groups differ significantly at α = 0.05?
Determine a 95 percent confidence interval for the population mean.
Suppose you bid $12000. What is the probability that your bid will be accepted?
What proportion of time will it take clean-up crew 56 or more hours for cleaning plant? Define the lower and upper limits of interval.
At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes?
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
Formulate the hypotheses to determine whether or not the lathe is in perfect adjustment.
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