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A "random survey" was conducted of 3274 people of the "microprocessor generation" (people born since 1971, the year the microprocessor were invented). It was reported that 48% of those
individuals surveyed stated that if they had $2000 to spend, they would use it for computer equipment. Also, 66% of those surveyed considered themselves relatively savvy computer users.
(Source: San Jose Mercury News)
a. Do you consider the sample size large enough for a study of this type? Why or why not?
Based on your "gut feeling," do you believe the percents accurately reflect the U.S. population for those individuals born since 1971? If not, do you think the percents of the population are actually higher or lower than the sample statistics? Why?
Is the gender distribution for theater goers significantly different from the distribution for the general college? Test at the .05 level of significance.
How many days should be considered if a 95 percent confidence is used and the estimate is to be within one hundred dollars?
A normal population has a mean of 75 and a standard deviation of 5. You select a sample of 40. Compute the probability that the sample mean is Between 74 and 76.
Determine the observed p-value for the hypothesis test and interpret this value. What does this mean?
Let p1 = 100 and n1 = 500; and p2 = 200 with n2 = 500. Test whether there is a statistical difference between the two proportions at the 5% significance level.
Evaluate the value of population proportion. Develop a 99% confidence interval for population proportion.
What is the theoretical probability that Mr. Nerdly assigns 10 homework problems as a result of a randomly selected student playing the birthday game?
Explain finding value of test statistic and P-value also understand the result. At the .01 significance level can we compute that the mean fare has increased.
The hypotheses tested by the one-way ANOVA F test - Evaluate the P-value of the ANOVA F test
In a slow year, Deutsche Burgers will produce 2 million hamburgers at a total cost of $3.5 million. In a good year, it can produce 4 million hamburgers at a total cost of 4.5 million.
Find the average age at which people will experience their first cardiac incident, given that 17% of all initial cardiac incident victims are younger than 50. Please, interpret the result.
Two independent samples of sizes n1 = 50 and n2 = 50 are randomly selected from two populations to test the difference between the population means. The sampling distribution of the sample mean difference, is:
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