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Hogar Banco de preguntas Matemáticas Estadísticas Archive 2024 December 17

Statistics Questions from Dec 17,2024

Browse the Statistics Q&A Archive for Dec 17,2024, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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Question The weight of oranges growing in an orchard is normally distributed with a mean weight of 8 oz. and a standard deviation of 1.5 oz . Using the empirical rule, determine what interval would represent weights of the middle of all oranges from this orchard. Question The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 1100 hours and a standard deviation of 70 hours. Using the empirical rule, what percentage of light bulbs last between 960 hours and 1240 hours? Question In an all boys school, the heights of the student body are normally distributed with a mean of 69 inches and a standard deviation of 3 inches. Using the empirical rule, determine the interval of heights that represents the middle of male heights from this school. Answer When Eva commutes to work, the amount of time it takes her to arrive is normally distributed with a mean of 57 minutes and a standard deviation of 4 minutes. Using the empirical rule, determine the interval that represents the middle of her commute times. This is the only question in this section. Question IQ scores are normally distributed with a mean of 100 and a standard deviation of 15 . Using the empirical rule, determine the interval that would represent the middle of IQ scores. Answer Attempt 1 out of 2 Question When Brooklyn commutes to work, the amount of time it takes her to arrive is normally distributed with a mean of 45 minutes and a standard deviation of 5 minutes. Using the empirical rule, what percentage of her commutes will be between 40 and 50 minutes? Question For males in a certain town, the systolic blood pressure is normally distributed with a mean of 125 and a standard deviation of 7 . Using the empirical rule, determine the interval of systolic blood pressures that represent the middle of males. Question In an all boys school, the heights of the student body are normally distributed with a mean of 70 inches and a standard deviation of 5 inches. Using the empirical rule, what percentage of the boys are between 55 and 85 inches tall? Answer 5) Find the population mean (point estimate). A researcher from pusp wants to estimate the average neight (population mean) of all filipint males. she collects a randum sample of 20 filipind males and measules their heights. , 171 Find the population variance, a population in grade 1 students consists of the following five numbers
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