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The article "Birth Order and Political Success" (Psych. Reports, 1971: 1239-1242) reports that among 31 randomly selected candidates for political office who came from families with four children, 12 were firstborn, 11 were middle born, and 8 were last born. Use this data to test the null hypothesis that a political candidate from such a family is equally likely to be in any one of the four ordinal positions.
question during the previous presidential elections in the united states very long wait times have been witnessed at
in a tire factor the quality control inspector examines a randomly chosen sample of 16 tires. when more than one
A research firm conducted a survey to determine the mean amount people spend at a popular coffee shop during a week. They found the amounts spent per week followed a normal distribution with a population standard deviation of $4.
a. conduct a simple linear regression analysis of these data in which the average tuition for private colleges is
Does this sample indicate a smaller average? Use α = 0.05 and assume a normally distributed population.
a system with 3 components is such that the system fails if at least one of the individual components fail.the
Could you detail the value of using standard scores (Z scores) to compare relative performance of individual test scores.
Find a 90% confidence interval for the population average µ of the percentage of hospitals providing at least some charity care.
a researcher uses analysis of variance to test for mean differences among four treatments with a sample of n 8 in each
the mean television viewing for americans is 15 hour per week monday november 2003. suppose a sample of 80 americans is
For the 20 test scores shown, find the percentile rank for a score of 86. 75 63 92 74 86 50 77 82 98 65 71 89 75 66 87 59 70 83 91 73. 75th percentile 30th percentile 80th percentile 70th percentile???
Determine the most likely outcome? Are events "alcohol involved" and "2 or more vehicles involved" mutually exclusive? Describe your reasoning.
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