Correct Answer:
The data value must be less than the mean.
The formula for the z value is:
z-value = (Data value - Mean) / Standard Deviation
The z-value will be negative when the Numerator of the above expression will be negative. The numerator will be negative only when the Data Value is less than the mean value. For example, for a data value of 5 and mean value 8, the numerator will be -3, and when it will be divided by standard deviation, the resulting z value will be negative.
So, Third option is the correct answer.
Answer:
1/6 of the third workers time
Step-by-step explanation:
one of the people is budgeted for 1 /2 of his time to the project and a second person for 1/3 of her time
Let x be the third workers time
Let the completed job time = 1
Time taken for 3 workers to complete the job = 1
now we solve for x
LCD = 2*3 = 6
We multiply the whole equation by 6
3 + 2 +6x = 6
5 + 6x = 6
subtract 5 on both sides
6x = 1
divide both sides by 6
Answer:
26 A =1690.48 in^2
27 B 10 2/15 hours
Step-by-step explanation:
26. The area of the mat is given by
A = l*w
where l = 74.8 and w = 22.6
A = 74.8 * 22.6
A =1690.48 in^2
27. The candle is 11 2/5 inches tall. It burns 1 1/8 inches per hour
We need to divide
11 2/5 ÷ 1 1/8
Changing to improper fractions
11 2/5 = (5*11+2)/5 = 57/5
1 1/8 = (8*1+1)/8 = 9/8
57/5 ÷9/8
Copy dot flip
57/5 * 8/9
456/45
Change back to a mixed number
45 goes into 456 10 times with 6 left over
10 6/45
10 2/15 hours
If you let x be the number to get 8 more you add so it would be x+8
