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The number of adults that should be surveyed is 138 (Round up to the nearest whole number). A random sample of 20 purchases showed the amounts in the table (in ). The mean is 52.08 and the standard deviation is 20.92. What is the standard error of the mean How would the standard error change if the sample size had been 5 instead of 20 (Assume that the sample standard deviation didnt change). Table 80.70 45.42 46.89 83.80 28.19 48.65 29.17 50.75 31.17 72.20 32.29 52.41 72.43 33.13 74.04 87.73 16.41 38.40 58.79 59.00 The standard error of the mean is 4.68(Round to two decimal places as needed) How would the standard error change if the sample size was 5 instead of 20 with the same sample standard deviation Select the correct choice below and fill in any answer boxes within your choice. The standard error would increase. The new standard error would be 2 times the old. The standard error would decrease. The new standard error would be the old standard error divided by _____________ The standard error would not change. Top management at a large Software company wishes to estimate the average number of hours its firms professional