Mathematics, 18.03.2020 21:34 jpsaad00
The U. S. Energy Information Administration surveys households to obtain data on residential energy consumption and expenditures and find out the mean residential energy expenditure of all U. S. families in 1995 was $1,123. That same year, 15 randomly selected upper-income families reported their energy expenditures. Their mean energy expenditures was $1,344.27 and the standard deviation was $231.
At the 5% significance level, do the data indicate that in 1995, upper-income families spent more on the average, for energy than the national average of $1,123?
Answers: 1
Mathematics, 21.06.2019 15:00
Use the graph to determine the range. which notations accurately represent the range? check all that apply. (–∞, 2) u (2, ∞) (–∞, –2) u (–2, ∞) {y|y ∈ r, y ≠ –2} {y|y ∈ r, y ≠ 2} y < 2 or y > 2 y < –2 or y > –2
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Mathematics, 21.06.2019 15:30
Iwill give brainliest only if your correct the words subsequent and submerge both contain the prefix sub. based on this information, what does the prefix sub most likely mean? a) under or secondary b) true or verifiable c) tricky or difficult d) around or centered on
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Mathematics, 21.06.2019 20:00
Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?
Answers: 3
The U. S. Energy Information Administration surveys households to obtain data on residential energy...
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