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One hundred people are selected at random and tested for colorblindness to determine whether gender and colorblindness are independent. The following counts were observed.
Colorblind Not Colorblind Total Male 7 53 60 Female 1 39 40 Total 8 92 100
Find the value of the χ2 statistic for the chart data.
If each bulb has a 99.9% chance of "working" the first time current is applied, what is the probability that the string itself will not work?
Gambling in ancient Rome. Tossing four astragali was the most popular game of chance in Roman times. Many throws of a present-day sheep's astragalus.
Use software to access the survey data and construct a 95% confidence interval for the number of cigarettes smoked in a day by the smoking students.
Using a table of critical? t-values of the t? distribution, find the range of values for the? P-value for testing a claim about the mean body.
A club consists of 10 seniors, 12 juniors, and 15 sophomores. An organizing committee of size 5 is chosen randomly (with all subsets of size 5 equally likely).
A standard deviation of 0.6 miles per gallon, find the probability that a car has a gas mileage of between 28.8 and 29.2 miles per gallon.
List and describe the three types of reading you would use to make notes from a given text. Explain briefly with examples of each type of reading.
a pharmaceutical company receives large shipments of ibuprofen tablets and uses this acceptance sampling plan randomly
discuss the various sampling methods we might use in determining which items to include in a
A random sample of 50 binomial trials resulted in 20 successes. Test the claim that the population proportion of successes does not equal 0.50.
a) What is the sampling distribution of mean height of 108 adults ages 20 and older?
What is the probability that all 3 would iPods from best buy? Or at least one would have iPod from best buy?
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