Solve the problem.A realtor is analyzing recent sale prices…
Solve the problem.A realtor is analyzing recent sale prices of 3 bedroom homes in her area. The mean sale prices of recent sales was $370 ,000 with a standard deviation of $50,000. Assuming no information concerning the shape of the distribution is known, what percentage of homes sold between $270,000 and $470,000?
Read DetailsSolve the problem.The amount of time workers spend commuting…
Solve the problem.The amount of time workers spend commuting to their jobs each day in a large metropolitan city has a mean of 70 minutes and a standard deviation of 20 minutes. Assuming nothing is known about the shape of the distribution of commuting times, what percentage of these commuting times are between 30 and 110 minutes?
Read DetailsSolve the problem.A realtor is analyzing recent sale prices…
Solve the problem.A realtor is analyzing recent sale prices of 3 bedroom homes in her area. The mean sale prices of recent sales was $320 ,000 with a standard deviation of $40,000. Assuming no information concerning the shape of the distribution is known, what percentage of homes sold between $200,000 and $440,000?
Read DetailsSolve the problem.A realtor is analyzing recent sale prices…
Solve the problem.A realtor is analyzing recent sale prices of 3 bedroom homes in her area. The mean sale prices of recent sales was $310 ,000 with a standard deviation of $20,000. Assuming no information concerning the shape of the distribution is known, what percentage of homes sold between $270,000 and $350,000?
Read DetailsSolve the problem.A study was designed to investigate the ef…
Solve the problem.A study was designed to investigate the effects of two variables — (1) a student’s level of mathematical anxiety and (2) teaching method — on a student’s achievement in a mathematics course. Students who had a low level of mathematical anxiety were taught using the traditional expository method. These students obtained a mean score of 300 with a standard deviation of 40 on a standardized test. Assuming a mound-shaped and symmetric distribution, in what range would approximately 68% of the students score?
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