Answer:
50%
Step-by-step explanation:
First, draw a normal distribution plot to use for the analysis of the data. Starting at the mean in the centre. Add one standard deviation for each interval to the right, and subtract one standard deviation for each interval to the right. See attached image. According to the empirical rule, 68% of data lies within one standard deviation of the mean, 95 % of the data is within two st. dev. and 99.7% of the data is within 3 st. dev. of the mean.
From the graph it can be deducted that half of the data will lie below 50, which makes it 50%.
An easier way of determining the answer is to use the definition of a mean. A mean is the number that,when all the data is placed in ascending order, lies right in the middle of all the data.
Answer:
7 is about 6 because it says to round to the nearest whole number
Step-by-step explanation:
8 is about 3 because it say to round to the nearest whole number
Answer:
11l:50
Step-by-step explanation:
110 min = 1 hour and 50 minutes
Answer:
1/2 x^2 + 2x - 6 = 0
(1/2 x - 1)(x + 6) = 0
zeroes are 2 and -6
so the graph intersects x axis at -6 and 2
The only one to do that is diagram A
Step-by-step explanation:
<span>So we want to know how many beads it takes to make a bracelet and a necklace if we have 192 beads and that we need 5 times more beads for the necklace. Let's say the number of beads we need for the necklace is n and the number of beads for the bracelet is b. We know that n + b = 192. Next we also know that 5b=n. When we plug that into our equation we get: 5b + b= 192 or:6b=192. so b=192/6=32. Now we know that the number of beads for the bracelet is 32. To get the number of beads for the necklace we simply plug in b=32 into 5b=n and we get 5*32=n so the number of beads to make a necklace is n=160.</span>