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Intelligence tests are designed to provide a normal distribution of IQ scored whith a mean of 100 and a standard deviation of 15.
* What IQ scores are in the highest 5% of all scores?
*What IQ scores are in the lowest 10% of all scores?
What is the probability of a randomly selected person having an IQ score about 80%?
What is the probability of a randomly selected person having an IQ score between 120 and 130
What is the probability of a randomly selected person having an IQ score below 94
What is the probability of a randomly selected person having an IQ score between 74 and 109?
Students from one large high school had a mean score of 58. Is there evidence to suggest that this high school is inferior?
1.a poll finds that 54 of the 600 people polled favor the incumbent. shortly after the poll is taken it is disclosed
how many students are enrolled in a course either in calculus discrete mathematics data structures or programming
Due to financial hardship, the Nyke shoe company feels they only need to make one size of shoes, regardless of gender or height. They have collected data on gender, shoe size.
For the experiment above, let X denote the number of hearts that are drawn. For this random variable, find its expected value and standard deviation.
if p .05 the critical value for rejecting the null hypothesis
What is Goldberg's rationale for the study? Was the study designed to contribute to theory? Do the results of the study contribute to theory? For both questions: If so, how? If not, why not?
Determine the percentage of households that have a credit card debt of more than $13,000.
An official of the Iowa department of Highways wants to compare the useful life, in months, of two brands of paint used for striping roads. The mean number of months Cooper Paint lasted was 36.2
question a study of 35 golfers showed that their average score was 92. the standard deviation of the sample was 5.a
Participants is approximately a normal distribution with a mean of 68 years and a standard deviation for 3.5 years. What proportion of the plan recipents die before they reach the standard retirement age of 65.
In this problem I am having an issue trying to determine what equation to use to solve. Is this a one or two way ANOVA or should I just use a z-test to solve?
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