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Identify the rejection region and give conclusion:
1. In a random sample of 400 persons who were given a flu vaccine, 136 said that they experienced some type of discomfort. Construct a 95% confidence interval for the proportion of all those who experience some type of discomfort.
2. Do the data provide sufficient evidence to conclude that the proportion of those who experience some type of discomfort is more than 30%? Answer the question using the following steps
a. Identify the rejection region.
b. Draw your conclusion, and interpret your conclusion in the context of the problem.
A newspaper reports have 58 percent of farmers are planning to plant genetically modified crops presesnt year. The article adds that the poll is based on a random sample.
Based on these data, explain whether or not course attendance had any effect on determining of a restaurants violation of health code.
High levels of glucose in the blood are indications of diabetes, which is becoming more prevalent in the United States. Diabetes can lead to many complications such as blindness and heart disease. A random sample of 180 individuals had their blood su..
We are establishing a quality control program for a process and need to establish the mean and standard deviation for the process. The first 10 batches had samples of size 5 taken.
The average score on the stat midterm was 75 points with a standard deviation of 5 points, and Gregor's z-score was -2. How many points did he score.
Find out the test statistic s and its two-sided P -value. Do data give good evidence that population mean is not zero?
What percentage of population scored between the mean and Jorge?
Assume that the measurements came from a normal distribution. The variability of the manufacturing process is unknown means the same as the standard deviation is unknown.
Complete the table and answer the following questions. Use the .05 significance level.
Perform a parametric analysis by assessing the fractional change in the probability of failure with respect to a small change in the mean and standard deviation of selected variable.
How do we decide if the homogeneity of variance assumption is significantly violated?
What is the possibility that for a arbitrarily selected customer the service time could exceed 3 minutes?
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