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In one state, 52% of the voters are Republicans, and 48% are Democrats. In a second state, 47% of the voters are Republicans, and 53% are Democrats. Suppose a simple random sample of 100 voters are surveyed from each state.
What is the probability that the survey will show a greater percentage of Republican voters in the second state than in the first state?
State the null hypothesis and the alternative hypothesis and compute the value of the test statistic and what is your decision regarding the null hypothesis?
High precision titanium spheres are popular components in manufacturing of ball bearings. A factory has ordered a shipment of 5000 titanium spheres from aboard. It is found that the shipment has a mean radius of 1.5 cm with a standard deviation ..
sum of yi 28.9 sum of yi295.51 sum of xi264 sum of xi2 7900 sum of xiyi856.6. the office wants to know iwhether the sat
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Using the following information for McDonovan, Inc.'s stock, calculate their expected return and standard deviation.
the standard error of the sample mean is equal to 5 when n25. if the sample size increases by a factor of four how
Experience ranges from 0 to 3. University ranking ranges from 1 to 4 (with 1 being the highest rank), and the Wonderlic test ranges from 0 to 50.
a manufacturing company is modernizing its operations for which it is planning to upgrade a manual assembly operation
almost all medical schools in the united states require applicants to take the medical college admission test mcat. on
To evaluate the effect of a treatment , a sample of n=9 is obtained from a population with a mean of m=40 and the treatment is administered to the individuals is found to be M-33
a student prepares for an exam by studying a list of 10 problems. she can solve 7 of them. for the exam the instructor
A random sample of 36 days yielded the average daily output of 890.2 tons, with standard deviation of 19.8 tons. Use this information to make a 95% confidence interval for mean.
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