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Phantasy [73]
3 years ago
15

Which ratio would help find the height of the kite?

Mathematics
1 answer:
AnnZ [28]3 years ago
3 0

Answer:

sin 50°

Step-by-step explanation:

\sin 50° =  \frac{x}{200}  \\ 0.7660444431 = \frac{x}{200} \\  = 200 \times 0.7660444431 \\ x = 153.208889 \\ x = 153.21 \: ft

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Answer:

Calculated value t =  0.614< 1.782

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<u>Step-by-step explanation:</u>

<u>we will t-test </u> t = x⁻- y⁻ /S√ n₁+n₂-2

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course B type at 75, 64, 81, 55, 69, and 58

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course A    course B

    x                    y             x- x⁻     (x-x⁻ )^2     y- y⁻     (y-y⁻ )^2    

    62                75            8             64          8            64

    85                64           15            225       -3             9

    59                81           -11            121          14            196      

    64                55           -6            36          -12          144          

    73                69          3                9            2            4

    70               58            0              0           -9            81

    75                              5              25

    72                              2               4

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<u>Null hypothesis :H₀:μ₁=μ₂ ( there is no difference between A and B)</u>

<u>Alternative hypothesis :H₁:μ₁≠μ₂</u>

<u>level of significance ∝=0.05</u>

<u>we will use t-test </u> t =   0.614 ( see attachment )

The degrees of freedom = n₁+n₂-2 = 8+6-2=12

From tabulated value  t = 1.782

Calculated value t = 0.614< 1.782

we accepted null hypothesis for 12 degrees of freedom at 0.05 level of significance .

There is no difference between Course A and Course B

Download docx
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