SAT scores in a state are normally distributed with a mean of 1411 and a standard deviation of 88. 1) Find the probability that one of the scores in the state is less than 1462
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SAT scores in a state are
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- A door-to-door salesperson is visiting houses in Hamilton to sell internet plans. The probability that a house decides to buy the internet plan is 25%. The salesperson visits 100 houses. Using normal approximation, determine the mean, standard deviation, and probability that less than 30 houses buy the internet plan.Scores on an IQ test are normally distributed with a mean of 50 and a standard deviation of 20. What is the IQR of the IQ score?Assume that adults have IQ scores that are normally distributed with a mean of 101.3 and a standard deviation of 20.2. Find the probability that a randomly selected adult has an IQ greater than 136.4
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