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Someone working for a survey organization approached thefirst 100 students they saw on campus, and noted that 52 of these students were female and 48 of these students were male. From the registar's data for that year, 25,000 students were enrolled, and 62% were male. Was this sampling procedure like taking a simple random sample? Explain your answer briefly
We want to estimate the population mean within 5, with a 99% confidence level. The population std dev is estimated to be 15. How large is the required sample size?
Compute the sample correlation coefficient r. Compute the coefficient of determination. Give a brief explanation of the meaning of the coefficient of determination in the context of this problem.
the waiting time in minutes between ordering and receiving your meal at a certain restaurant is exponentially
The life expectancy of Timely brand watches is normally distributed with a mean of four years and a standard deviation of eight months. What is the minimum and the maximum life expectancy of the middle 95% of the watches?
the weight of an organ in adult males has a bell shaped distribution with a mean of 310 grams and a standard deviation
Multiple comparison procedures are going to be done using the Bonferroni method with = 0.05. The value of t** is 2.4667. Which of the following is the appropriate conclusion from carrying out these multiple comparisons?
The faculty members at Boise State University were surveyed on the question "How satisfied were you with the Summer 2002 Schedule?" Their responses were to be categorized as "very satisfied," "somewhat satisfied," "neither satisfied nor dissatisfi..
Insurance policies ever have to pay out. You decide to test his claim at the a=0.1significance level. With a critical value of -2.33, compute the sample statistic.
a survey of affluent americans those with incomes of 75000 or more indicated that 56 would rather have more time than
Construct a 95 percent confidence interval for the population mean. Is it reasonable that the population mean is 28 weeks? Justify your answer.
Research the topic of Job Satisfaction using the Business Source Premier Database (EBSCO) and/or the ABI Inform Global database from the Internet.
Construct and interpret a 90% confidence interval to estimate the mean fuel savings in the population of all such vehicles.
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