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There are 8146 male employees studied from 1946 to 1981. Comparisons were made for causes of death between mortality rates in these workers and U.S. white male mortality rates from 1950 to 1978. There were 17 deaths from cirrhosis of those hired before 1946 and worked for 10 years or more, compared to 6.3 was expected based on U.S. mortality rates.
Perform a significance test to see if there is a relation between mortality and duration of employment in the group hired AFTER 1945 and report a p-value.
Obtain a test statistic and p -value assuming equal variances. Interpret these results.
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 deck of cards is shuffled and then divided into two piles of 26 cards each. We say that a suit is unsplit if all 13 cards of that suit are in the same pile. Compute the probability that at least one suit will be unsplit.
For the samples summarized below, test the hypothesis at ∞ =.05 that the two variances are equal. Variance Number of data values Sample 1 19 8 Sample 2 9 18
Suppose the population standard deviation is a=25. (The a is actually the funny looking 0 with the line that goes from the top right up at an angle) Compute the standard error of the mean
Pproportion who are sent to prison after pleading innocent and being found guilty? No, as the test value -1.96 is inside interval (-2.58, 2.58), No, as the test value -4.94 is outside interval (-1.96, 1.96).
Construct a frequency distribution and construct a histogram for the following data and use seven intervals, starting with 30-39.
Which of the following Venn diagrams has shaded the event that the contractor wins exactly one of the contracts and evaluate the mean time to complete the entire homework assignment
Utilizing a binominal experiment, that is each trail can be reduced to two outcomes, construct a binomial distribution.
A researcher conducts an experiment comparing two treatment conditions and obtains data with 10 scores for each treatment condition.
Determine the percentage of households that have a credit card debt of more than $13,000.
The dying rate in an industrial process is department of many factors and varies according to the following distribution.
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