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Nataly_w [17]
2 years ago
8

In recent years the mean number of miles driven per year by residents of a particular state was 11,568. A researcher wishes to t

est, at the 5% level of significance, whether the mean is different now. In a random sample of 62 drivers, the mean and sample standard deviation of the number of miles driven last year were 10,822 and 1,741, respectively.
(a) The relevant hypotheses are

(a) H0 :µ =11, 568 Vs Ha :µ ≠11, 568 (b) H0 :µ =10,822 Vs Ha :µ ≠10,822 (c) H0 : X =11, 568 Vs Ha : X ≠11, 568 (d) H0 : X =10,822 Vs Ha : X ≠10,822

(b) The value of the test statistic is about

(a) -3.345; (b) 3.376; (c) 3.345; (d) -2.855; (e) -3.376

(c) The rejection region is

(a) (-[infinity],-2]U[2,[infinity]) (b) (-[infinity],-2] (c) (-[infinity],-1.96]U[1.96,[infinity]) (d) (-[infinity],-1.96] (e) (-[infinity],-1.670]
Mathematics
2 answers:
svet-max [94.6K]2 years ago
7 0

Answer:

oksy

Step-by-step explanation:

disa [49]2 years ago
6 0

Answer:

516

Step-by-step explanation:

You should check the 561 with 6591

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Price of a bucket of eggs $16.20
price for a dozen of eggs $3.50
number of dozens in 450 eggs:
450/12
=37.5
price of 37.5 will be:
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The percentage the store has increased the price will be:
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All members of our painting team paint at the same rate. If $20$ members can paint a $6000$ square foot wall in $24$ minutes, th
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Let x represent time taken by 20 members to paint 9000 square foot wall.

We have been given that all members of our painting team paint at the same rate. 20 members can paint a 6000 square foot wall in 24 minutes. We are asked to find the time taken by 20 members to paint 9000 square foot wall.

We will use proportions to solve our given problem.

\frac{\text{Time taken}}{\text{Area of wall painted}}=\frac{24\text{ min}}{6000\text{ ft}^2}

\frac{x}{9000\text{ ft}^2}=\frac{24\text{ min}}{6000\text{ ft}^2}

\frac{x}{9000\text{ ft}^2}\times 9000\text{ ft}^2=\frac{24\text{ min}}{6000\text{ ft}^2}\times 9000\text{ ft}^2

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Answer:

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Step-by-step explanation:

Algebraic Expression:

An algebraic expression is a mathematical expression that consists of variables, numbers and operations.

  • Variables with the coefficient is called as Term.
  • Number is also a term.

Here the Expression is

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So,

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