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2050 randomly selected adults were asked whether or not they have ever shopped on the Internet. The following table gives a two-way classification of the responses.
HAVE SHOPPED HAVE NEVER SHOPPED
MALE 500 700
FEMALE 300 550
Round your answers to three decimal places.
If one adult is selected at random from these 2050 adults, find the probability that this adult
i. has never shopped on the Internet.___?
ii. is a male.__?
iii. has shopped on the Internet given that this adult is a female.___?
iv. is a male given that this adult has never shopped on the Internet._____?
Suppose urn #2 has 6 red and 12 blue balls. Suppose we pick three balls uniformly at random from each of the two urns.
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use the normal approximation to binomial to find the probability for n 48 p 0.9 and x lt
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Young affluent U.S. professionals are creating a growing demand for exotic pets. The most popular pets are the Shiba Inu dog breed, Rottweilers.
A student scores 81 on a chemistry test and 75 on a history test. For the chemistry test, the mean was 70 and the standard deviation was 20. For the history test, the mean was 65 and the standard deviation was 8.
Assuming that these students represent all students at UCD, test whether there is a preference for one drink over the other for students at UCD.
Construct a 90% confidence interval for the true mean weight. What sample size would be necessary to estimate the true weight with an error of plus or minus .03 grams with a 90% confidence?
What measures can management adopt towards a union acceptance strategy?
Compute the realized rate of return for an investor who purchased the bonds when they were issued and held them until they were called.
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