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You are appraising the quality of diamonds for your importer. A diamond without a clear center (opaque center) shall be downgraded and sold at discount. it is known that the probaability of an opaque center is 26%. You are given a lot of 17 diamonds.
What number of diamonds are most likely to have opaque centers?
Diamonds with opaque centers =
Calculate a 95% confidence interval for the population mean, based on the sample 10, 12, 13, 14, 15, 16, and 49.
2 laptops are chosen at random without replacement, what is the probability that both are high priced?
What is the maximum error of estimate for p ?
Discuss an example from every day life, your professional experience, personal life or sports where two variables are positively correlated and why; discuss a second example where two variables are negatively correlated and why.
There were 25 subjects included in each of the combinations of gender and smoking status. One of the variables measured was the heart rate after six minutes of exercise. A two-way ANOVA is performed with the resulting ANOVA table given below
Using multiple linear regression, compute the regression equation for the following data in Excel.
Determine a 90% confidence interval estimate of the mean head circumference of all two-month-old babies.
What are some critical decisions involved in selecting an appropriate measurment scale? How might these decisions influence the research design?
The formula for a 95% confidence interval yields the interval 640 ± 5.88. Find out whether each of the given statements is true or false.
Write the regression. Interpret the regression constant and regression coefficient. Forecast a value for monthly salary.
Mention your decision regarding the null hypothesis. If H 0 rejected can we conclude that treatment 2 and treatment 3 differ? Use 95 percent level of confidence.
Suppose that you are interested in determining the effectiveness of an intensive supervision program (ISP) for poor student performers. To examine its effectiveness, you keep track of 12 students entering an ISP for one year and tabulate the numbe..
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