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The IQ for adults is 100 and the standard deviation is 16.
a. What percentage of people have an IQ greater than 140?
b. What percentage have IQ's between 100 and 140?
c. SmartPeople is an organization that only admits people with IQ's in the top 98 percentile. What IQ score would a person need to be a member of SmartPeople?
a) Set up the null and alternative hypotheses, and perform the hypothesis test. b) Based on these results, does the diet appear to be effective? Does the diet appear to have practical significance?
Assume that the regression equation for the relationship between SAT scores and IQ scores is y = 9 +.105x. What would you expect the IQ score to be for the following individuals, given their SAT scores? Individual SAT Score IQ Score Susan 850 Sall..
Following data represent random sample of bank balances for population of checking account customers at large eastern bank. Based on data, determine the 95 percent confidence interval estimate for true population mean?
A deck of playing cards contains 52 cards, four of which are aces. What is the probability that deal of a five-card hand provides?
Given a p-cap of 0.16, n = 100, construct a Confidence Interval of 95%. What does the Range created mean? What happends if n changes to 10? What does the new Range mean?
What is the 25th percentile of a chi squared distribution with 20 degrees of freedom? What symbol is used to denote this value?
Using the Wilcoxon Signed-Ranks Test. Paired sample data and use the Wilcoxon signed-ranks test to test the claim that the matched pairs have differences that come from a population with a median equal to zero.
Find the expected GPA when SAT = 800. Find E (GPA|SAT = 1,400). Comment on the difference.
In a survey of 8000 woman, 5431 say they change their nail polish once a week. Construct a 99% confidence interval for the population proportion of woman who change their nail polish once a week. A 99% confidence interval for the population is??
Find the Probability and prove that the given two events are mutually exclusive and independent or not.
Write a sentence showing how the outcome of the hypothesis test and the measure of effect size would appear in a research report.
Explain distribution of sample means (shape , Expected value , and standard error ) for samples of n=36 selected from population with a mean of m =100 and standard deviation of s=12.
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