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In a lengthy manuscript, it is found that only 2/3 of the pages contain no typing errors. Assume that the number of errors per page has a Poisson distribution.
a. Find the expected number of errors per page?
b. What percentage of pages has exactly one error?
Find the range, standard deviation, and variance for the scores.
Five homes were recently sold in Oxnard Acres. Four of the homes sold for $400,000 while the fifth home sold for $2.5 million. Which measure of central tendency best represents a typical home price in Oxnard Acres?
Explain briefly and in nontechnical language what "a significant difference (P
A drawer contains 11 identical red socks, and 8 identical black socks. Suppose that you choose 2 socks at random in the dark
How is data screening related to the assumptions of the statistic you will choose to analyze your data?
At 95% confidence using the critical value approach, determine if the proportion of females in the company is significantly less than 50%.
Between 180 and 230 (inclusive) of the drivers in the sample regularly wear a seatbelt? Hint: Use the BINOMDIST function in Excel.
The winning team's score in 13 high school basketball games was recorded. If the sample mean is 54.3 points and the sample standard deviation is 11.0 points, find the 98% confidence interval of the true mean.
At 0.05 level of significance, is there evidence of noteworthy difference in variation in sales among different aisle locations?
Assume a mean wage of $1,000 and standard deviation of $100. What's the probability of finding an employee with a wage of between $790 and $1000?
The registrar of a college with a population of N=4,000 full-time students is asked by the president to conduct a survey to measure satisfaction with the quality of life on campus.
What is the appropriate procedure to test a significant difference in means between the two groups? Use the critical-value method.
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