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Elza [17]
3 years ago
9

B + -73 = -58help please​

Mathematics
2 answers:
kramer3 years ago
6 0
The answer is b = 131
n200080 [17]3 years ago
5 0

Answer:

Step-by-step explanation:

b-73=-53

b=-53+73

b=+73-53

b=73-53

b=20

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State the hypothesis and claim:
vekshin1

Answer:

<em>Null Hypothesis</em>: H₀ : μ < 214 miles

<em>Alternative Hypothesis :H₁</em>: μ> 214 miles

The calculated value |t| = 1.319 < 3.4966 at 0.01 level of significance

Null hypothesis is accepted

The average daily travel distance is less than 214 miles

Step-by-step explanation:

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

Given that the size of the sample 'n' = 12

The mean of the Population = 214 miles

The mean of the sample   = 198 miles

The standard deviation of the sample = 42 miles

Level of significance = 0.01

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

Null Hypothesis: H₀ : μ < 214 miles

Alternative Hypothesis :H₁: μ> 214 miles

Test statistic

             t = \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } }

             t = \frac{198 -214}{\frac{42}{\sqrt{12} } }

          |t| = |- 1.319| = 1.319

Degrees of freedom   = n-1 = 12 -1 =11

critical value  t_{(0.005 , 11)} =   3.4966

The calculated value |t| = 1.319 < 3.4966 at 0.01 level of significance

Null hypothesis is accepted

The average daily travel distance is less than 214 miles

3 0
2 years ago
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