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Of the shirts produced by a company, 8% have loose threads, 7.5% have crooked stitching, and 3.5% have loose threads and crooked stitching. Find the probability that a randomly selected shirt has loose threads or has crooked stitching.
Confidence intervals and sample size, part 2. A confidence interval for the price of gasoline from a random sample of 30 gas stations in a region gives the following statistics:
The average weight of 40 randomly selected minivans was 4150 pounds. The standard deviation was 480 pounds. Find the 99% confidence interval of the true weight of the minivans.
a. Plot £, against £t-1 fort = I. .... 10 on a graph. How is the positive first-order autocue relation in the error terms shown by the plot?
suppose the probability density function of the length of computer cables is fx 0.1 from 1200 to 1210 millimeters.
Determine the likelihood function and a minimal sufficient statistic for this model. (Hint: Use the factorization theorem and maximize the logarithm
Is there significant evidence that this production run doesn't meet specifications? Use a 1% level of significance.
What percentage of the portfolio should be invested in the risky stock?
What is the probability that an IRS auditor will catch only 2 income tax returns with illegitimate deductions if she randomly selects 5 returns from among 15 returns, of which 9 contain illegitimate deductions?
Standard deviation 2.8 inches. (a) If you choose one student at random, what is the probability that he is between 69 and 71 inches tall?
Every year sixth-grade students in Ohio schools take proficiency tests.
We have data from a four by three factorial with 24 units. Below are ANOVA tables and residual versus predicted plots for the data and the log transformed data. What would you conclude about interaction in the data? Original data:
What are the null and alternative hypothesis for testing the claim that the AI detects false statements as claimed by the company?
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