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3 years ago

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Millie read a 36 page book and an 54-page book.she read the books in 5 days.she read the same number of pages every day.how many

pages did Millie read each day?

2 answers:

Step2247 [10]3 years ago

6 0

Answer:

add 36+54/4

Step-by-step explanation:

dexar [7]3 years ago

5 0

Answer: 18

Step-by-step explanation: 36+54=90 total pgs --> 90/5 days = 18 per day

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<em>The calculated value |t| = 2.375 > 2.1009 at 0.05 level of significance</em>

<em>Null hypothesis is rejected </em>

<em>Alternative hypothesis is accepted</em>

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Step-by-step explanation:

<u><em>Step(i):-</em></u>

<em>Given data</em>

<em>First sample size (n₁) = 10 </em>

<em>mean of the first sample(x₁⁻) = 537</em>

<em>standard deviation of the first sample (S₁) = 22</em>

<em>second sample size (n₂) = 10 </em>

<em>mean of the second sample (x₂⁻) = 559</em>

<em>standard deviation of the second sample (S₂) = 17</em>

<u><em>Step(ii)</em></u><em>:-</em>

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<u>Alternative Hypothesis :H₁</u>

<em>The extra carbonation of cola results in a higher average compression strength</em>

<u><em>Step(iii)</em></u><em>:-</em>

<em>By using student's t -test for difference of means</em>

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<em> where </em>

<em> </em> $S^{2} = \frac{n_{1}S^{2} _{1} + n_{2} S_{2} ^{2} }{n_{1}+n_{2} -2 }$ <em />

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<em>Degrees of freedom</em>

<em>γ = n₁+n₂ -2 = 10+10-2 =18</em>

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