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Question: The correlation between Stanford-Binet IQ scores and Wechsler Adult Intelligence Scale (WAIS) IQs is about .80. Both tests have a mean of 100. The standard deviation on older versions of the Stanford-Binet was 16. For the WAIS, S = 15. What WAIS IQ do you predict for a person who scores 65 on the Stanford-Binet? Write a sentence summarizing these results. (An IQ score of 70 has been used by some schools as a cutoff point between regular classes and special education classes.)
At the 0.05 significance level, is there a difference in the proportion of viewers watching the three channels? State the null and alternative hypothesis. Identify the level of significance: Given at 0.05
in a class 20 of the students are male and 80 female. among male students 40 wears eye glasses among female students 30
A high school counselor is interested in the percentage of students who will be going to college. She randomly picks 60 students and finds that 53 will be going to college. Use a 95% confidence level to find the population proportion.
"A recent study was conducted to determine the relation between advertising expenditures and sales of widgets for the first year of production."
what is the purpose of forecasting? why are forecasts not always correct? what are the limitations of
Obtaining uniform random numbers as instructed at the beginning of the Problems section, generate three random observations from each of the following probability distributions.
Next, compute the mean rate of return and the standard deviation of returns for both your stocks and the stock market. Compute the beta value for each stock and plot the characteristic lines of the 2 companies on 2 graphs
a survey of an urban university population of 25450 showed that 750 of 1100 students sampled attended a home football
The firm HCO did not report its total billing but employs 3 architects, 1 engineer, and 17 staff members. What is the predicted total billing for this firm?
Studies show that brushing every day with Gleam Toothpaste will extend the life of your teeth. This is an example of what fallacy?
According to an internet posting, 80% of adults enjoy drinking beer. Choose a group of 3 adults at random. The probability that none of them enjoy drinking beer is:
in any given situation if the level of confidence and the standard deviation are kept constant how much would you need
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