Of all 3- to 5-year-old children, 56% are enrolled in school. If a sample of 500 such children is randomly selected, find the probability that at least 250 will be enrolled in school.
Answer to relevant QuestionsTwo out of five adult smokers acquired the habit by age 14. If 400 smokers are randomly selected, find the probability that 170 or fewer acquired the habit by age 14. Find the area under the standard normal distribution curve for each a. Between z = 0 and z = 1.95 b. Between z = 0 and z = 0.37 c. Between z = 1.32 and z = 1.82 d. Between z = –1.05 and z = 2.05 e. Between z = – 0.03 ...In a large university, 30% of the incoming first-year students elect to enroll in a personal finance course offered by the university. Find the probability that of 800 randomly selected incoming first-year students, at least ... A random sample of enrollments in Pennsylvania’s private four-year colleges is listed here. Check for normality. A study of 415 kindergarten students showed that they have seen on average 5000 hours of television. If the sample standard deviation of the population is 900, find the 95% confidence level of the mean for all students. If a ...
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