Mathematics, 28.11.2020 18:50 kajjumiaialome
We collected a sample of the prices of new homes. The mean of our sample is $255,000, with a standard deviation of $19,000. Calculate the z-scores of each of the given prices. Determine if the they are usual or unusual. Round up each z-score to two decimals.
(a) $275, 000
(b) $230,000
(c) $210,000
(d) $290,000
Answers: 1
Mathematics, 21.06.2019 22:20
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A6 ounce bottle of dressing costs $1.56 a 14 ounce bottle costs $3.36 a 20 ounce bottle costs $5.60 which has the lowest cost per ounce
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Farmers know that driving heavy equipment on wet soil compresses the soil and injures future crops. here are data on the "penetrability" of the same type of soil at two levels of compression. penetrability is a measure of how much resistance plant roots will meet when they try to grow through the soil. compressed soil 2.85 2.66 3 2.82 2.76 2.81 2.78 3.08 2.94 2.86 3.08 2.82 2.78 2.98 3.00 2.78 2.96 2.90 3.18 3.16 intermediate soil 3.17 3.37 3.1 3.40 3.38 3.14 3.18 3.26 2.96 3.02 3.54 3.36 3.18 3.12 3.86 2.92 3.46 3.44 3.62 4.26 use the data, omitting the high outlier, to give a 95% confidence interval for the decrease in penetrability of compressed soil relative to intermediate soil. compute degrees of freedom using the conservative method. interval: to
Answers: 1
We collected a sample of the prices of new homes. The mean of our sample is $255,000, with a standar...
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