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The normal serum hemocrit level is 0.41 milligrams to 100 milligrams of blood. The level in elderly patients is significantly low at 0.31.
25 patients out of 100 are normal levels. The standard deviation is 0.6. A medication that is designed to increase the hemocritis taken in 100 patients for one month. A testing is found that 45 patients have a mean average of 0.38 milligrams. As 0.1% does the medication increase the hemocrit levels?
A. States the null and alternative hypothesis
B. Define the statistic test
C. Develop the decision rul.
D. Compute the test statistic.
E. State the conclusion.
One group was enquired, questions what they saw. One group was enquired, "About how fast were cars going when they smashed into each other?"
The post anesthesia care area (recovery room) at St. Luke's Hospital in Maumee, Ohio was recently enlarged. The hope was that with the enlargement the mean number of patients per day would be more than 25.
Compute a 95% confidence interval for the mean difference in the percentage of bone loss between two groups.
Perform the appropriate test of hypothesis to determine whether Kim's average time has changed. Use alpha=.01. Compute the power of the test if Kim's actual mean swimming time is 147.3 seconds. Interpret the results.
In a group of seven adult friends, what is the probability that: a) no one has done a one-time fling?
A study showed that 60% of The Wall Street Journal subcribers watch CNBC every day. Of these, 70% watch it outside the home. Only 20% of those who don't watch CNBC every day watch it outside the home.
A telephone survey utilized a sampling frame of 2000 numbers, and had a response rate of 25%. A question asked respondents if they preferred Brand 1, Brand 2, or Brand 3.
The Dean of Students believes that the costs are greater this semester. What is the test value for this hypothesis?
Examine relationship between GNP per capita and the percentage of respondents willing to pay more taxes. Create a table using the data below for the GNP per capita and the percentage willing to pay higher taxes.
Do the sample data present sufficient evidence to reject the manufacture's claim? Test using a a=0.05. What is the p-value of the test.
Develop four probability questions using the table that you as an instructor of statistics might ask a class of students for a test in probability.
Where S, A, and R are measured in dollars per week. Vanguard's marketing director is comfortable using parameter estimates that are statistically significant at the 10% level or better.
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