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kherson [118]
3 years ago
12

one third of the Juniors in the Linwood high school marching band play the trumpet the band has 50 members and the table shows w

hat percent of the band members are freshman sophomores Juniors and seniors how many Juniors play the trumpet​
Mathematics
2 answers:
Ahat [919]3 years ago
7 0

Answer:

4 Juniors play the trumpet

Step-by-step explanation:

Given the following information:

percent of the band members that are Juniors: 24%

In 50 members of the band, 50*24/100 = 12 are Juniors. One third of them play the trumpet, that makes 12*(1/3) = 4 members.

baherus [9]3 years ago
5 0

Answer:

12

Step-by-step explanation:

You must first divide 50 by 100 to get what 1% of 50 would be (0.5). You can then take 0.5 and multiply it by 24 and you will get 12.

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3 years ago
What is 2/3+1/2 equal to
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3 years ago
Read 2 more answers
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3 years ago
A survey of 90 men found that an average amount spent on St. Patrick's day of $55 with a standard deviation of $18. A similar su
dem82 [27]

Answer:

The value of the test statistic is 4.70.

Step-by-step explanation:

The hypothesis for this test can be defined as follows:

<em>H</em>₀: Men do not spend more than women on St. Patrick's day, i.e. μ₁ = μ₂.

<em>H</em>ₐ: Men spend more than women on St. Patrick's day, i.e. μ₁ > μ₂.

The population standard deviations are not known.

So a <em>t</em>-distribution will be used to perform the test.

The test statistic for the test of difference between mean is:

t=\frac{\bar x_{1}-\bar x_{2}}{\sqrt{\frac{s^{2}_{1}}{n_{1}}+\frac{s^{2}_{2}}{n_{2}}} }

Given:

\bar x_{1}=55\\s_{1}=18\\n_{1}=90\\\bar x_{1}=44\\s_{1}=16\\n_{1}=86

Compute the value of the test statistic as follows:

t=\frac{\bar x_{1}-\bar x_{2}}{\sqrt{\frac{s^{2}_{1}}{n_{1}}+\frac{s^{2}_{2}}{n_{2}}} }=\frac{55-44}{\sqrt{\frac{15^{2}}{90}+\frac{16^{2}}{86} }}=4.70

Thus, the value of the test statistic is 4.70.

7 0
3 years ago
Ratios equivalent to 1/2
Blizzard [7]
The answer is 1:2. all you have to do is add the dots for example 4/5 would be 4:5
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3 years ago
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