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Two new drugs were given to patients with hypertension. The first drug lowered the blood pressure of 16 patients an average of 11 points, with a standard deviation of 6 points. The second drug lowered the blood pressure of 20 other patients an average of 12 points, with a standard deviation of 8 points. Determine a 95% confidence interval for the difference in the mean reductions in blood pressure, assuming that the measurements are normally distributed with equal variances.
When considering the comfort and safety of the passenger which result is more relevant . the result from (a) or the probability from part (B) ? Pls explain why
1. Suppose Subway has carried out the study, using the sample size determined in that exer- cise, and 27.5% of the franchisees say they are pleased with their relationship with Subway. Construct and interpret the 95% confidence interval for the po..
Assuming that X is a normal R.V. with mean 1000 and variance 2500, find the probability that a resistor picked at random will be rejected.
Tthen calculate the 95% and 99% CIs for the proportion of all female Hispanic drivers in Boston who wear seatbelts. Why is the 99% CI wider than the 95% CI?
The Dean of Students believes that the costs are greater this semester. What is the test value for this hypothesis?
The board of health of a particular state was called to investigate claims that raw pollutants were being released into the river flowing past a small residential community.
Based on the Correlation following are Multiple choices question. If the correlation coefficient among two variables is equal to zero, what can be said of the variables X and Y.
Consider the following hypothesis test What is the value of the test statistic? What is the p-value? With a=.05, what is your conclusion, reject or accept?
Please use synthetic division and the remainder theorem to find the indicated function values:
Review the Christian year pie chart and write a summary in which you (a) describe the significance of the holy days on the chart.
Carry out an appropriate text at a 5% level of significance to test george and Jerry's theory. Interpret the p-value you calculated in part A. Construct and interpret a 92% condidence interval for P.
question a survey shows that 74 of the indians like apples where 68 like orange. what percentage of the indians like
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