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A GSS asked. "What do you think is the ideal number of children for a family to have? the 497 female who responded had a median of 2, mean of 3.02 and standard deviation of 1.81
(a) Report the point estimate of the population mean.
(b) find and interpret the standard error of the sample mean.
(c) The 95% confidence interval is (2.9, 3.2). Interpret.
(d) Is it plausible that the population mean =2.0? explain.
If the estimate is to be within 8 mpg of the true mean with 98% confidence and the estimated standard deviation is 22 mph, how large a sample size must be taken?
What is a point estimate for the population mean µ?
If probability the first truck is available is= .75, probability the second truck is available is= .50, and probability both are available is= .30, determine the probability which neither truck is available?
A record executive is interested in the popularity of her label's newest band, The Standard Deviations. She asks 10 people how many Standard Deviations songs they know.
What percent of the Fords traveled 62.000 miles or less during the year?
Determine the probability that no more than 10 firms are perfectly competitive?
Based on the information in part (a), what decision should the director make about the books used for the courses if the goal is to keep the cost below $300?
Find the mean ______________ and the standard deviation _____________
A human factors psychologist studied three computer keyboard designs.
Researchers routinely choose an alpha level of 0.05 for testing their hypotheses. What are some experiments for which you might want a lower alpha level (e.g., 0.01)? What are some situations in which you might accept a higher level (e.g., 0.1)?
The first step in this assignment is to provide SPSS with the Value Labels for the values in LOCALE97.
Is the z value positive or negative? Explain why it should be positive or negative.
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