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A person must score in the upper 2% of the population on an IQ test to qualify for member ship in Mensa, the international high-IQ society. If IQ scores are normally distributes with a mean of 100 and a standard deviation of 15, what score must a person have to qualify for Mensa?
Based on your answers to a through d, decide whether or not to reject the null hypothesis at the given significance level. Explain your conclusion in the context of the problem.
The random variable x is known to be uniformly distributed between 70 and 90. The probability of x having a value between 80 to 95 is
If true explain and if false give an example. a. The significance level of a statistical test is equal to the probability that the null hypothesis is true. b. If the significance level of a test is decreased, the power of the test would be expected t..
In a pilot study, five kids are given several problems of each type to practice (and then tested on three problems), in one of the three Sequences: D-R-T, T-D-R, OR R-T-D.
If an apartment is selected at random, what is the probability that it is not a 2 bedroom apartment on the 2nd floor?
Evaluate the area under the standard normal curve that lies to the left of z = - 3.49 and simple random sample of size
What is the probability that a cereal would be high calorie, given that is low fiber? In other words, what is P (high calorie, given low fiber)?
In government data, a household consists of all occupants of a dwelling unit, while a family consists of two or more persons who live together and are related by blood or marriage. So all families form households, but some households are not famil..
Suppose you were to cut up the directory and pull out one listing at random to contact.
You manufacture and sell an iron rod whose electrical conductivity is supposed to be 10.1. You plan to make 6 measurements of the conductivity of a rod you plan to sell.
If a lot is known to contain 10% defective items, find out the probability that lot will be rejected? Accepted?
Use this information to compute a 95% confidence interval for average number of credit cards carried by students.
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