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1. Glucose levels in patients free of diabetes are supposed to follow the normal distribution with mean of 120 and a standard deviation of 16.
a) Determine proportion of patients have glucose levels exceeding 115?b) If the patient has glucose level of 140, what percentile is this?c) Determine the probability that mean glucose level exceeds 115 in a sample of 12 patients?
An entrepreneur owns two hotels, one in the western region of a certain state and the other in the eastern region. He thinks that the average amount spent by guests for lunch at his Friendly Café-West is less than $34.50
The Bunte Auto Repair Shop received a shipment of four carburetors. One is known to be defective. If two are selected at random and tested.
The p-value of the test is closest to:
Write a statistical laboratory report using the guidelines in the assigned article, "How to Write a Statistical Report."
Obtain a test statistic and p-value assuming equal variances. Interpret these results.
Suppose that, in a sample of 200, we observe 140 successes. Is this sufficient evidence at the 1% significance level to indicate the the population proportion of successes is greater than 65%
Professor Jennings claims that 35% of the students at Flora College work while attending school. Dean Renata thinks that the professor has underestimated the number of students with part time or full time jobs. A random sample of 81 students shows..
Determine the calculated value of the test statistic? What distribution does test statistic have when null hypothesis is true?
Selection of a location for a prospective Wal-Mart creates many questions for executives. A suitable site would be one that has an adequate demand for Wal-Mart offerings, sufficient transportation resources, and an available labor force.
By using the fact that Martha believes the treatment will decrease the amount of time to fall asleep, describe the null and alternate hypotheses.
The lifetime of African Cichlids is unknown but the sample of 75 cichlids were taken and its mean life time was 5.2 years with a margin error of 420 days for 95% confidence a) What is the 95% confidence interval for the lifetime of the African fish..
Students will conduct one brief research exercise that will be written up as a research report using APA style.
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