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skelet666 [1.2K]
3 years ago
6

For a health assignment, Janet and Kate record how many students wear glasses in each of their classes. In Janet's class, 15 out

of the 25 students wear glasses. In Kate's class, 12 out of the 20 students wear glasses. Which class has the greater ratio of students with glasses to total students?
Mathematics
2 answers:
rewona [7]3 years ago
6 0

Answer:

They are equal

Step-by-step explanation:

prohojiy [21]3 years ago
5 0

Answer:

There are equal ratios

Step-by-step explanation:

100/25=4 and 15x4 is 60

100/20=5 and 12x5 is also 60

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7 0
3 years ago
The manufacturer of an airport baggage scanning machine claims it can handle an average of 560 bags per hour. (a-1) At α = .05 i
ioda

Answer:

The calculated value t = 1.76 < 2.131 at 0.05 level of significance

Null hypothesis is accepted

The manufacturer’s claim is greater than 560 bags per hour

Step-by-step explanation:

<u><em>Explanation</em></u>:-

Given sample size 'n' =16

Given the manufacturer of an airport baggage scanning machine claims it can handle an average of 560 bags per hour.

mean of the Population 'μ' = 560

Mean of the sample Χ⁻ = 538

sample standard deviation' S' = 50

<em><u>Null hypothesis</u></em><em>:H₀:μ > 560</em>

<em><u>Alternative Hypothesis</u></em><em>:H₁ : :μ < 560 (left tailed test)</em>

<em>Test statistic</em>

   t = \frac{x^{-}-mean }{\frac{S}{\sqrt{n} } }

  t = \frac{538-560 }{\frac{50}{\sqrt{16} } } = -1.76

|t| = |-1.76| = 1.76

<em>Degrees of freedom </em>

<em>γ = n-1 =16-1 =15</em>

t_{\frac{\alpha }{2} } = t_{\frac{0.05}{2} } =t_{0.025} =2.131

<em><u>Conclusion</u></em>:-

The calculated value t = 1.76 < 2.131 at 0.05 level of significance

Null hypothesis is accepted

The manufacturer’s claim is greater than 560 bags per hour

6 0
3 years ago
Help me thanks please thanks
Gnesinka [82]
83838383 centimeters
4 0
3 years ago
Read 2 more answers
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Answer:

12

Step-by-step explanation:

4hoursx3 temp increase=12

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3 years ago
The ratio of square H’s length to square I’s length is 3 : 5. If the length of square H is 18 meters, what is the perimeter of s
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B. 54 meters

first you want to set up your ratios and cross multiply to figure out the number to square l's ratio. which would be 10.8.

then use formula for perimeter 
2(l)+2(w)=9
2(10.8)+2(18)=53.6-rounded =54<span />
6 0
3 years ago
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