
According to an NRF survey conducted by BIGresearch, the average family spends about $237 on electronics...
According to an NRF survey conducted by BIGresearch, the average family spends about $237 on electronics (computers, cell phones, etc.) in back-to-college spending per student. Suppose back-to-college family spending on electronics is normally distributed with a standard deviation of $54. If a family of a returning college student is randomly selected, what is the probability that: (a) They spend less than $160 on back-to-college electronics? (b) They spend more than $340 on back-to-college electronics? (c) They spend between $120 and...
According to an NRF survey conducted by BIGresearch, the average family spends about $237 on electronics (computers, cell phones, etc.) in back-to-college spending per student. Suppose back-to-college family spending on electronics is normally distributed with a standard deviation of $54. If a family of a returning college student is randomly selected, what is the probability that: (a) They spend less than $145 on back-to-college electronics? (b) They spend more than $390 on back-to-college electronics? (c) They spend between $125 and...
According to the Insurance Institute of America, a family of four spends between $400 and $3,800 per year on all types of insurance. Suppose the money spent is uniformly distributed between these amounts. What is the mean amount spent on insurance? What is the standard deviation of the amount spent? (Round your answer to 2 decimal places.) If we select a family at random, what is the probability they spend less than $2,000 per year on insurance per year? (Round...
According to the Insurance Institute of America, a family of four spends between $400 and $3,800 per year on all types of insurar Suppose the money spent is uniformly distributed between these amounts. a. What is the mean amount spent on insurance? Mean - b. What is the standard deviation of the amount spent? (Round your answer to 2 decimal places.) Standard deviation c. If we select a family at random, what is the probability they spend less than $2,000...
1. The average amount parents and children spent per child on back-to-school clothes in Autumn 2010 was $527. Assume the standard deviation is $160 and that the amount spent is normally distributed. What is the probability that the amount spent on a randomly selected child is more than $700? (Round to four decimal places) What is the probability that the amount spent on a randomly selected child is less than $100? (Round to four decimal places) What is the probability...