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A state administered standardized reading exam is given to eighth grade students. The scores on this exam for all students statewide have a normal distribution with a mean of 507 and a standard deviation of 70. A local Junior High principal has decided to give an award to any student who scores in the top 10% of statewide scores. How high should a student score be to win this award? Give your answer to the nearest integer.
Use the steps of hypothesis testing. (b) Sketch the distributions involved. (c) Explain your answer to someone who has never taken a course in statistics.
A committe studying employer-employee relations proposed that a rating system be adopted. Each employee would rate his or her inmediate supervisor and in turn the supervisor would rate each employee.
What is the probability that a randomly chosen eight-week old baby smiles between 2 and 18 seconds?
Suppose that 20% of the population has high blood pressure. If 7 people are randomly selected off the street, what is the probability that more than 4 of them do not have high blood pressure?
The average gasoline price of one of the major oil companies in Europe has been $1.25 per liter. Recently, the company has undertaken several efficiency measures in order to reduce prices.
An investment counselor would like to meet with 12 of his clients on Monday, but he has time for only 8 appointments. How many different combinations of the clients could be considered for inclusion into his limited schedule for that day?
The random variable x is known to be uniformly distributed between 1.0 and 1.5.
In this paper present the Construction of confidence Intervals and the Proper Interpretation of confidence Intervals and show appropriate examples in the education environment.
What is the level L (±0.0001) such that the probability that the average NOX level for the fleet is greater than L is only 0.03?
Standard deviation of 0.02 ounce. You can permit cup to overfill 4% of the time. What amount must you set as mean amount of coffee to be dispensed?
Enlarged to 14 measurements, by including two additional measurements having a common value of 40 each. Find the standard deviation of the sample of 14 measurements.
Just, a case of food poisoning was traced to a particular restaurant chain. The source was identified and corrective actions were taken to make sure that the food poisoning would not reoccur. In spite of the response from the restaurant chain, man..
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