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The unfair coin (p = p ( head)=0.7 and q = p(tail) =0.3 ) is tossed 200 times. Use normal approximation to find the probability
The unfair coin (p = p ( head)=0.7 and q = p(tail) =0.3 ) is tossed 200 times. Use normal approximation to find the probability that the number of heads is between 130 and 150 (both inclusive). 0.8948 O 0.8558 None of these answers O 0.8764A health care professional wishes to estimate the birth weights of infants. How large a sample must be obtained if he desires to be 95% confident that the true mean is within 3 ounces of the sample mean? Assume that the standard deviation of the population is 5 ounces. None of these answers O 11 10 15A health care professional wishes to estimate the birth weights of infants. How large a sample must be obtained if he desires to be 95% confident that the true mean is within 3 ounces of the sample mean? Assume that the standard deviation of the population is 5 ounces. None of these answers O 11 10 15
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