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GaryK [48]
2 years ago
5

A small dealership leased 21 Suburu Outbacks on 2-year leases. When the cars were returned at the end of the lease, the mileage

was recorded (see below). 40,060 24,960 14,310 17,370 44,740 44,550 20,250 33,380 24,270 41,740 58,630 35,830 25,750 28,910 25,090 43,380 23,940 43,510 53,680 31,810 36,780 picture Click here for the Excel Data File (a) Is the dealer's mean significantly greater than the national average for 2-year leases, which is 30,000 miles? Using the 10 percent level of significance, choose the appropriate hypothesis. H0: μ ≤ 30,000, reject H0 if tcalc > 1.325 H1: μ ≤ 30,000, reject H0 if tcalc > 1.325 H0: μ > 30,000, reject H1 if tcalc > 1.325 H1: μ > 30,000, reject H1 if tcalc > 1.325 a b c d (b-1) Calculate the test statistic. (Round your answer to 2 decimal places.) Test statistic (c) The dealer's cars show a significantly greater mean number of miles than the national average at the 10 percent level.
Mathematics
1 answer:
Liula [17]2 years ago
4 0

Answer:

yes 30 is the answer

Step-by-step explanation:

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The prices of three t-shirts styles are $24, $30 and $36. the probability of choosing a $24 t-shirt is 1/6. the probability of c
Slav-nsk [51]

\text{Answer} : \text{The expected value of a t-shirt is \$31.}

Explanation:

Since we have given that

The prices of three t-shirts styles  i.e $24, $30, $36 with their probability is given by

\frac{1}{6}, \frac{1}{2},\frac{1}{3}

As we know that,

E(X)= \sum_{1}^{3}x_iP(x_i)

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Now,

x_1= \$24 , x_2=\$30 , x_3=$36

and

P(x_1)=\frac{1}{6},P(x_2)=\frac{1}{2}, P(x_3)=\frac{1}{3}

So,

E(X)= 24\times \frac{1}{6}+30\times\frac{1}{2}+36\times \frac{1}{3}\\=4+15+12\\=31

So, the expected value of a t-shirt = $31.

4 0
2 years ago
An adult meerkat weighed 0.776 kilograms . this is 7.47 hectograms more than the weight of a baby meerkat . how much dose a baby
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Let x = weight of adult meerkat, y=weight of baby meerkat, Find y.
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2 years ago
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TiliK225 [7]

The correct answer would be, Jeremy rides at a greater speed than Kevin.

Step-by-step explanation:

Jeremy rides at a rate of 15 miles per hour

Kevin rides at a rate given in the table

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So for Kevin, Y = 11.5 x

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which means Jeremy rides at a greater speed.  

Learn more about Time and Distance problem at:

brainly.com/question/3581191

#LearnWithBrainly

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2 years ago
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The answer is 143 square feet
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Think about all of the ways in which a circle and a parabola can intersect. Select all of the number of ways in which a circle a
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Answer:

A circle can intersect a parabola in

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3. Three points [Circle just touches at one point and cuts the parabola in two distinct points]

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