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nordsb [41]
3 years ago
8

What is the standard deviation of company r's earnings per month for this year? (1) the standard deviation of company r's earnin

gs per month in the first half of this year was $2.3 million. (2) the standard deviation of company r's earnings per month in the second half of this year was $3.9 million. 2. what is the standard deviation of q, a set of consecutive integers? (1) q has 21 members. (2) the median value of set q is 20. 3. lifetime of all the batteries produced by certain companies have a distribution which is symmetric about mean m. if the distribution has a standard deviation of d , what percentage of distribution is greater than m+d? (1) 68 % of the distribution in the interval from m-d to m+d, inclusive (2) 16% of the distribution is less than m-d 4. question deleted 5. list s and list t each contain 5 positive integers, and for each list the average of the integers in the list is 40. if the integers 30,40 and 50 are in both lists , is the standard deviation of the integers in list s greater than the standard deviation of the integers in list t? (1)the integer 25 is in list s (2)the integer 45 is in list t 6. set t consists of odd integers divisible by 5. is standard deviation of t positive? (1) all members of t are positive (2) t consists of only one member 7. set x consists of 8 integers. is the standard deviation of set x equal to zero? (1) the range of set x is equal to 3 (2) the mean of set x is equal to 5 8. {x,y,z} if the first term in the data set above is 3, what is the third term? (1) the range of this data set is 0. (2) the standard deviation of this data set is 0. 9. question deleted 10. a scientist recorded the number of eggs in each of 10 birds' nests. what was the standard deviation of the numbers of eggs in the 10 nests? (1) the average (arithmetic mean) number of eggs for the 10 nests was 4. (2) each of the 10 nests contained the same number of eggs. 11. during an experiment, some water was removed from each of the 6 water tanks. if the standard deviation of the volumes of water in the tanks at the beginning of the experiment was 10 gallons, what was the standard deviation of the volumes of water in the tanks at the end of the experiment? (1) for each tank, 30% of the volume of water that was in the tank at the beginning of the experiment was removed during the experiment. (2) the average (arithmetic mean) volume of water in the tanks at the end of the experiment was 63 gallons. calculating standard deviation of a set {x1, x2, ... xn}: 1. find the mean, m, of the values. 2. for each value xi calculate its deviation (xi-m) from the mean. 3. calculate the squares of these deviations. 4. find the mean of the squared deviations. this quantity is the variance. 5. take the square root of the variance. the quantity is th sd. tips: 1. |median-mean| <= sd?
Mathematics
1 answer:
Norma-Jean [14]3 years ago
5 0
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 are all factors of 2

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A game of chance with exactly thirty distinct outcomes is designed to allow 8 people to win the game for every 22 people who do
vagabundo [1.1K]

Answer:

B

Step-by-step explanation:

Can not be the first 2. People must come first. 44 is the people.

6 0
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Two trains are 480 miles apart. They start at the same time, and travel towards one another. The difference between the speeds o
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3 years ago
A right triangle has a hypotenuse of length 99 inches. if one angle is 34 degrees34°​, find the length of each leg.
Andreyy89
Sine (34) = opposite / 99
opposite side = .55919 * 99
opposite side = <span> <span> <span> 55.35981 </span> </span> </span>

Adjacent side² = 99² - 55.35981²
Adjacent side² = <span> <span> </span></span> <span> <span> <span> 9,801  </span> </span> </span> -<span><span><span>3,064.7085632361 </span> </span> </span>
<span><span><span>Adjacent side² = 6,736.29 </span> </span> </span>
Adjacent side = <span> <span> <span> 82.0749

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5 0
2 years ago
Belle's Cupcakes recently sold 6 pistachio cupcakes and 8 other cupcakes. Considering this data, how many of the next 56 cupcake
VikaD [51]

Answer: 24 pistachios cupcakes.

Step-by-step explanation:

We know that:

They recently sold 6 pistachio cupcakes and 8 other cupcakes.

Then we can model this with the ratio 6:8

This means that for each 6 pistachio cupcakes sold, they also sell 8 of another type of cupcakes.

Whit this info, if they sell 56 cupcakes, how many of them will be pistachio cupcakes?

Using the ratio above, we must find a number N such that:

N*6 + N*8 = 56.

N*(6 + 8) =  56

N*14 = 56

N = 56/14 = 4.

This means that:

out of the 56 cupcakes, 4*6 = 24 are pistachios cupcakes

                                        4*8 = 32 are other cupcakes.

Then you should expect that 24 out of the 56 cupcakes are pistachios cupcakes.

6 0
3 years ago
6. Write an equation of a line parallel to y = 3x + 9 and goes through the point (-1,5).
lisabon 2012 [21]

Answer: The equation parallel to the line is y=3x+8

Step-by-step explanation: Parallel lines have the same gradients, wr have a gradient for the above line which 3. The standard formula for the linear equation is y=mx+c

We have to calculate c since we have x and y.

y=mx+c

5= 3(-1)+c

c=8

The equation become y=3x+8

4 0
3 years ago
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