According to studies done in the 1940s, 29% of people dream in color. Assuming this is still true, find the probability that in a random sample of 200 independent people, 50% or more will report dreaming in color. Start by checking the conditions to see whether the Central Limit Theorem applies.
Answer to relevant QuestionsIgnaz Semmelweiss (1818–1865) was the doctor who first encouraged other doctors to wash their hands with disinfectant before touching patients. Before the new procedure was established, the rate of infection at Dr. ...Explain the difference between sampling with replacement and sampling without replacement. Suppose you have the names of 10 students, each written on a 3 by 5 notecard, and want to select two names. Describe both procedures. Suppose we are testing people to see if the rate of use of seat belts has changed from a previous value of 88%. Suppose that in our random sample of 500 people, we see that 450 have the seat belt fastened. a. About how many ...According to Time magazine (May 28, 2012), 33% of people in the U.S. have sleep-walked at least once in their lives. Suppose a random sample of 200 people showed that 42 reported sleepwalking. The first two steps were asked ...Samuel Morse determined that the percentage of t’s in the English language in the 1800s was 9%. A random sample of 600 letters from a current newspaper contained 48 t’s. Using the 0.10 level of significance, test the ...
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