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Question:
IQ scores from the general population form a normal distribution with a m = 100 and s = 15. However, data indicate that children's intelligence may be affected if their mothers have German measles during pregnancy.
Using hospital records, a researcher obtained a sample of n = 25 school children whose mothers all had German measles during their pregnancies. The average IQ for this sample was x? = 94.
Do these data indicate that German measles have a significant effect on IQ? Test with alpha=.05.
A person estimates that his commute to work will most likely take 50 minutes. However, it could talk as long as 1 hour and 35 minutes worst case, or as little as 35 minutes best case. What is the approximate standard deviation based on the ab..
question 1 a package delivery service claims that no more than 5 percent of all packages arrive at the address late.
What do the Fitted (predicted) values and Residuals represent? For example, there is one record in the data set with height = 54 and weight = 110. Please use these numbers to explain what is the fitted value and what is the residual.
A researcher is interested in determining the most effective format for advertising. He randomly assigns 60 people to one of three groups: (1) television commercial, (2) radio commercial, or (3) magazine advertisement. Group members review the commer..
A real estate agent wishes to determine the selling price of residences using the size (square feet), and whether the residence is a condominium or a single-family home. A sample of 20 residences was obtained with the following results: x 233 10 24 5..
Let a random sample be taken of n= 36 from a population with a known standard deviation of σ= 3. Suppose that the mean of the sample is= 37. Find the 95% confidence interval for the mean, μ, of the population from which the sample was drawn. (Round ..
Using the SPSS 2 × 3 ANOVA data file for Module 4 (located in Topic Materials), answer the following questions. NOTE: Helpful hints are provided here for you to use while answering these questions. There is no separate answer sheet/guide to use while..
Quantitative Business Analysis - Find Correlation, simple linear, and Multiple Regression Analysis
The access code for a car's security system consists of Five digits. The first digit cannot be zero and the last digit must be odd. How many different codes are available?
alomega pharmaceuticalsalomega pharmaceuticals is a small to mid size pharmaceutical company. the accounting
A student scored 76 on a general science test where the mean and standard deviation were 82 and 8, respectively he also scored 53 on a psychology test where the class mean and standard deviation were 58 and 3, respectively. In which class was his rel..
Sixty percent of Americans read their employment construct, including the fine print ("Snapshots," usatoday.com, January 20, 2004). Assume that the number of employed who read every word of their contract can be modelled using the binomial distributi..
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