you increase your walking speed from 1 m/s to 3 m/s in a period of 1 s. What is your acceleration? A) 2 m/s ^2 B) 3 m/s ^2 C) 5
2 answers:
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Answer:
a) 0.025 level of significance
The calculated t - value t = 2.88 > 3.58 at 0.025 level of significance
Therefore null hypothesis is rejected
The data indicate that the dividend yield of all Australian bank stocks is higher than 7.9%
Step-by-step explanation:
<u><em>Step(i):-</em></u>
Let 'x' has a normal distribution
Given sample size 'n' =11
Mean of the sample (x⁻) = 9.89% = 0.0989
Standard deviation of the sample (s) = 2.3% = 0.023
Mean of the Population ' μ' = 7.9% = 0.079
<u><em>Step(ii):-</em></u>
<u><em>Null hypothesis:H₀:</em></u>' μ' = 0.079
<u><em>Alternative Hypothesis</em></u> :μ' > 0.079
Test statistic
t = 2.8840
Degrees of freedom
ν = n-1 = 11-1 =10
<em>Level of significance </em>
<u><em>Step(iii):-</em></u>
<em>The calculated t - value t = 2.88 > 3.58 at 0.025 level of significance</em>
<em>Therefore null hypothesis is rejected</em>
<em>The data indicate that the dividend yield of all Australian bank stocks is higher than 7.9%</em>
We are given a trapezoid TRHY.
Height of the trapezoid = 13 units.
b1 = 21 units and
Area = 215 units squares.
We need to find the length of b2.
We know formula for area of a trapezoid.
Plugging values in formula.
215 = (21+b2)× 13.
215 = 6.5(21+b2)
Dividing both sides by 6.5, we get
33.08 = 21+b2.
Subtracting 21 from both sides, we get
33.08-21 = 21-21+b2
b2 = 12.08.
<h3>Therefore, length of b2 is 12.08 units.</h3>