Armando read 20 pages of his 200-page book in 4 hours. At this rate, how long will it take him to read the entire book?

Mathematics

2 answers:

Deffense [45]2 years ago

6 0

20 pages in 4 hours.
Total pages of book is = 200
Therefor: 200/20= 10
= 10 x 4 = 40 hours

Neko [114]2 years ago

5 0

Answer:

Step-by-step explanation:

b because in 4 hours he/she read 20 pages in 40 hours 4(10)=40, in 40 hours he would have read all 200 pages because 20(10)=200

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A national grocery store chain wants to test the difference in the average weight of turkeys sold in Detroit and the average wei

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Calculated value t = 1.3622 < 2.081 at 0.05 level of significance with 42 degrees of freedom

The null hypothesis is accepted .

Assume the population variances are approximately the same

Step-by-step explanation:

Explanation:-

Given data a random sample of 20 turkeys sold at the chain's stores in Detroit yielded a sample mean of 17.53 pounds, with a sample standard deviation of 3.2 pounds

The first sample size 'n₁'= 20

mean of the first sample 'x₁⁻'= 17.53 pounds

standard deviation of first sample S₁ = 3.2 pounds

Given data a random sample of 24 turkeys sold at the chain's stores in Charlotte yielded a sample mean of 14.89 pounds, with a sample standard deviation of 2.7 pounds

The second sample size n₂ = 24

mean of the second sample "x₂⁻"= 14.89 pounds

standard deviation of second sample S₂ = 2.7 pounds

Null hypothesis:-H₀: The Population Variance are approximately same

Alternatively hypothesis: H₁:The Population Variance are approximately same

Level of significance ∝ =0.05

Degrees of freedom ν = n₁ +n₂ -2 =20+24-2 = 42

Test statistic :-

$t = \frac{x^{-} _{1} - x_{2} }{\sqrt{S^2(\frac{1}{n_{1} } }+\frac{1}{n_{2} } }$