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Tresset [83]
3 years ago
10

Bring me home with this home in 10 11 12 and 13

Mathematics
2 answers:
spin [16.1K]3 years ago
6 0
Marla Paid 72$ or 71.99$ because 20% is 18$ so you subtract 90 by 18.
Mariana [72]3 years ago
3 0
10: 1140
11: ?
12: about $18
13: ?
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Please help with these two questions thank you.
prohojiy [21]
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A high school student named David Merrell did a study of how music affects the ability of rats to run a maze. He trained 71 rats
ladessa [460]
I don’t understand what you are saying...
3 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
Find z such that 7.5% of the standard normal curve lies to the left of z.
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A probability of 0.075 corresponds to a z-score of about z\approx-1.44, i.e.

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3 years ago
What is a constant term or variable term that makes 5x + 20 = 5x + ? have one solution?
In-s [12.5K]

Answer:

It would be 20

Step-by-step explanation:

because 5x+20 = 5x + <u>         </u>

it would have to be 20

to have 1 solution

6 0
3 years ago
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