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In your sock drawer you have 4 blue socks, 5 grey socks, and 3 black ones. Half asleep one morning, you grab 2 socks at random and put them on. Find the probability you end up wearing
a) 2 blue socks.
b) no grey socks.
c) at least 1 black sock.
d) a green sock.
e) matching socks.
How would you respond if someone told you that the correlation between education level and salary was 1.27?
What proportion of a normal distribution is within one standard deviation of the mean?
State the decision rule using the .01 significance level. Compute the value of chi-square. What is your decision regarding Ho?
Define Population 1 as the Deerfield course and Population 2 as the Pike Creek course. Construct a 95% confidence interval for the difference in population mean and interpret the results.
What are the categories for each of the two variables?- If the explanatory variable is used to define the rows of the contingency table, which variable would be the row variable?
1. for the production lot size model to be appropriate the relationship between d annual demand and p maximum annual
smith is a weld inspector at a shipyard. he knows from keeping track of good and substandard welds that for the
Discuss the merits and Imitations of representing statistical data through graphs and diagrams. How do you represent data by means of a pie diagram?
Operators are to answer telephone calls from customers in an average time of 0.1 minute or less, and either respond to or refer to the proper department within 0.5 minute.
To obtain data, the obituary columns of The New York Times are read for 30 days, and the ages at death of people in the United States are noted. Do you think this approach will lead to a representative sample?
senior management of a consulting services firm is concerned about a growing decline in the firms weekly number of
The following data are the daily price quotations for a certain stock over a period of 45 days. Construct a stem-and-leaf display for these data. What can you conclude about the distribution of daily stock prices over the period under study?
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