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Nataly_w [17]
2 years ago
14

Hans planted 15 bulbs and 12 grew into flowers. If next year he plants 55 bulbs, how many do you predict will grow into flowers

based on his previous experience?
Mathematics
1 answer:
Reil [10]2 years ago
7 0

Answer:

44

Step-by-step explanation:

15/12=1.25

55/44=1.25

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The volume of this cylinder is 175pi cubic units. What is the volume of a cone that has the same base area and the same height?
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79,168.135

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3 years ago
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How many cubes that measure 2 inches by 2 inches by 2 inches would fit inside a cube that measures 10 inches by 10 inches by 10
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Find the surface area of the prism shown (Remember, rectangular prisms have a total of 6 sides)
gregori [183]

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In the expression 14b what is the coefficient? *
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4 0
3 years ago
The calibration of a scale is to be checked by weighing a 13 kg test specimen 25 times. Suppose that the results of different we
Natali5045456 [20]

Solution :

a).

Given : Number of times, n = 25

            Sigma, σ = 0.200 kg

            Weight, μ = 13 kg

Therefore the hypothesis should be tested are :

$H_0 : \mu = 13 $

$H_a : \mu \neq 13$

b). When the value of $\overline x = 12.84$

 Test statics :

   $Z=\frac{(\overline x - \mu)}{\frac{\sigma}{\sqrt n}} $

  $Z=\frac{(14.82-13)}{\frac{0.2}{\sqrt {25}}} $

          $=\frac{1.82}{0.04}$

          = 45.5  

P-value = 2 x P(Z > 45.5)

            = 2 x 1 -P (Z < 45.5) = 0

Reject the null hypothesis if P value  < α = 0.01 level of significance.

So reject the null hypothesis.

Therefore, we conclude that the true mean measured weight differs from 13 kg.

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