Mathematics, 31.07.2019 22:10 130005401
According to the u. s. energy administration, the mean monthly household electric bill in the united states is $99.70 with a standard deviation of $20. given that household electric bills follow a normal distribution, what is the probability that a randomly chosen household electric bill:
a) is over $131.50? b) is less than $80? c) is between $85.50 and $111.50? d) is either higher than $105 or less than $90?
Answers: 1
Mathematics, 21.06.2019 15:30
Angel entered a triathlon (a three-part race). he swam 1 mile, rode his bike 30 miles, and ran 10 miles. how far did he go altogether? a. 11 miles b. 123 miles c. 41 miles d. 40 miles
Answers: 1
Mathematics, 21.06.2019 15:30
The average hourly earnings for a construction worker is projected to be $24.50 in 2012. jason wants to join the construction work force after he graduates in 2012. his friend tells him that average hourly earnings for construction workers will rise by 2% from 2009 to 2012. based on the data below, assuming that the projected hourly earnings are correct, is jason’s friend’s statement accurate? construction industry - average hourly earnings, 2000-2009 a. his friend’s statement is accurate. the average hourly earnings will increase by 2%. b. his friend’s statement is not accurate. the percent increase will be more than 2% c. his friend’s statement is not accurate. the percent increase will be less than 2% d. his friend’s statement is not accurate. the average hourly earnings will decrease
Answers: 3
Mathematics, 21.06.2019 16:00
Use the function f(x) is graphed below. the graph of the function to find, f(6). -2 -1 1 2
Answers: 1
According to the u. s. energy administration, the mean monthly household electric bill in the united...
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