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olga55 [171]
2 years ago
11

12, 26, 18, 8, 80, 14, 56, 16 The data above shows the number of points scored by each player on a basketball team during a regi

onal tournament. Jennie sampled three of the players and got a mean score of 14. Charles sampled three players and got a mean score of 54. Explain the difference in the two sample means.
Mathematics
2 answers:
damaskus [11]2 years ago
8 0
Sample means show a large variation because the data set has a large range. When there is a large variation in the data set, the sample means also will have a large variation. Jennie included small values in her sample, while Charles included high values.
xenn [34]2 years ago
5 0

Answer:

The data set shows a large variation. Jennie used the lowest scores in her set, Charles used the highest scores. The large variation in the means was caused by a large variation in the population.

this is select all to apply question

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In △ABC, m∠A=15 °, a=10 , and b=11 . Find c to the nearest tenth.
pshichka [43]

Answer:

The answer is:

\bold{c\approx 20.2\ units}

Step-by-step explanation:

Given:

In △ABC:

m∠A=15°

a=10 and

b=11

To find:

c = ?

Solution:

We can use cosine rule here to find the value of third side c.

Formula for cosine rule:

cos A = \dfrac{b^{2}+c^{2}-a^{2}}{2bc}

Where  

a is the side opposite to \angle A

b is the side opposite to \angle B

c is the side opposite to \angle C

Putting all the values.

cos 15^\circ = \dfrac{11^{2}+c^{2}-10^{2}}{2\times 11 \times c}\\\Rightarrow 0.96 = \dfrac{121+c^{2}-100}{22c}\\\Rightarrow 0.96 \times 22c= 121+c^{2}-100\\\Rightarrow 21.25 c= 21+c^{2}\\\Rightarrow c^{2}-21.25c+21=0\\\\\text{solving the quadratic equation:}\\\\c = \dfrac{21.25+\sqrt{21.25^2-4 \times 1 \times 21}}{2}\\c = \dfrac{21.25+\sqrt{367.56}}{2}\\c = \dfrac{21.25+19.17}{2}\\c \approx 20.2\ units

The answer is:

\bold{c\approx 20.2\ units}

4 0
2 years ago
A recent study of the hourly wages of maintenance crew members for major airlines showed that the mean hourly salary was $20.50,
RSB [31]
You ended without giving the values, so we can't get the exact answer. However, I can tell you steps.

First, you need to find the z-score. Then, look up the z-score on a normal distribution table and you will get the percent.

Let's call your value X. Just plug X into the equation below and you will have your z-score.

(x - 20.5) / 3.5 = z

Now, look up the z-score and you will have your probability.<span />
8 0
1 year ago
A movie theater was putting up their posters in the frames they had installed on the wall for upcoming attractions. They have 8
Serjik [45]

Answer:

1680

Step-by-step explanation:

Since there are 4 places (frames) to put up each poster, we think individually:

In the first place they can place ANY OF THE 8 POSTERS

In 2nd place, they can place ANY OF THE REMAINING 7 POSTERS

In 3rd place, they can place ANY OF THE REMAINING 6 posters

and

in last place, they can place ANY OF THE REMAINING 5 posters

The number of ways is the multiplication of them all, so:

8 * 7 * 6 * 5 ways = 1680 ways

7 0
2 years ago
Read 2 more answers
The ____________ of probability tells that to determine the chances of independent events, such as the likelihood of inheriting
____ [38]

Answer:

The product rule of probability tells that to determine the chances of independent events, such as the likelihood of inheriting a certain allele, probabilities are multiplied

Step-by-step explanation:

The product rule of probability states that the probability of independent events occurring together can be gotten by multiplying the probability of each event occurring alone.

The product rule is given as P(A*B) = P(A) *P(B).   Where A and B are two independent events. For example when picking cards from a deck of 52 cards, the probability of getting an ace is 4/52 = 1/13 (because there are 4 aces in a deck of 52 cards) . The probability of picking a heart is 13/52 = 1/4. Therefore the probability of picking the ace of hearts is 1/4*1/13 =1/52.

6 0
2 years ago
A pair of sunglasses is on sale for $26. The original price of the sunglasses was $40. What percent of the original price is the
GarryVolchara [31]
If the glasses were origanum 40, and were on sale for 26,we minus them from eachother to find out how much money was saved. So 40-26= 14, if $14 was saved we put 14 over the original price and times it buy 100 14/40x100= 35% So 35% was saved. 100-35= 65. Therefore 65% of the original price was paid and 35% was saved.
7 0
2 years ago
Read 3 more answers
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