Three students want to estimate the mean word length of the same book. To do this,...

 

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Three students want to estimate the mean word length of the same book. To do this, each student randomly chose 5 words from the book and recorded their lengths. The samples are shown in the table. (a) Fill in the sample means in the table. Do not round your answers. Sample Word length (number of letters) Sample mean 1. 9, 8, 7, 6, 8 7.6 7, 7, 8, 9, 8 7.8 9, 8, 9, 8, 7 8.2 (b) Use the table to calculate the range of the sample means. Range of sample means: 0.6 (c) The students are going to use the sample means to estimate the mean word length in the book. Select all the true statements below. O The mean of the sample means will tend to be a worse estimate than a single sample mean. UA single sample mean will tend to be a worse estimate than the mean of the sample means. O The closer the range of the sample means is to 0, the more confident they can be in their estimate. O The farther the range of the sample means is from 0, the more confident they can be in their estimate. Three students want to estimate the mean word length of the same book. To do this, each student randomly chose 5 words from the book and recorded their lengths. The samples are shown in the table. (a) Fill in the sample means in the table. Do not round your answers. Sample Word length (number of letters) Sample mean 1. 9, 8, 7, 6, 8 7.6 7, 7, 8, 9, 8 7.8 9, 8, 9, 8, 7 8.2 (b) Use the table to calculate the range of the sample means. Range of sample means: 0.6 (c) The students are going to use the sample means to estimate the mean word length in the book. Select all the true statements below. O The mean of the sample means will tend to be a worse estimate than a single sample mean. UA single sample mean will tend to be a worse estimate than the mean of the sample means. O The closer the range of the sample means is to 0, the more confident they can be in their estimate. O The farther the range of the sample means is from 0, the more confident they can be in their estimate.

Answer rating: 100% (QA)

a 1 Mean sumn 9 8 7 6 85 385 76 2 Mean 7 7 8 9 85 395 78 3 Mean 9 8 9 8 75 415 82 b Range ... View the full answer