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podryga [215]
3 years ago
6

At a large automobile dealership, you take a random sample of 35 cars and determine that the average cost is $34,330. Which stat

ement is true? A) You conclude that the price of all cars on the dealership's lot is exactly $34,330. B) You conclude that more than half of the cars on the dealership's lot cost less than $34,330. C) You conclude that less than half of the cars on the dealership's lot cost more than $34,330. D) You conclude that the average price of all cars on the dealership's lot is close to $34,330.
Mathematics
2 answers:
viva [34]3 years ago
8 0

Answer:

c

Step-by-step explanation:

Lina20 [59]3 years ago
3 0
C) you conclude that less than half of the cars on the dealership’s lot cost more than$34,330
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Cushing's disease is characterized by muscular weakness due to adrenal or pituitary dysfunction. To provide effective treatment,
Katyanochek1 [597]

Answer:

Since the calculated value of t =-0.427 does not  fall in the critical region so we accept H0 and conclude that there is enough evidence to show that mean difference in the  age of onset of symptoms and age of diagnosis is  25 months  .

Step-by-step explanation:

The given data is

Difference d= -24 -12 -55 -15 -30 -60 -14 -21 -48 -12 -25 -53 -61 -69 -80

∑ d= -579

 ∑d²= 29871

1) Let the hypotheses be

H0: ud= 25 against the claim    Ha: ud ≠25

H0 : mean difference in the  age of onset of symptoms and age of diagnosis is  25 months  .

Ha:   mean difference in the  age of onset of symptoms and age of diagnosis is not 25 months.

 

2) The degrees of freedom = n-1= 15-1= 14

3) The significance level is 0.05

4) The test statistic is

t= d`/sd/√n

The critical region is ║t║≤ t (0.025,14) = ±2.145

d`= ∑di/n= -579/15= -38.6

Sd= 23.178  (using calculators)

Therefore

t= d`/ sd/√n

t= -38.6/ 23.178√15

t= -1.655/3.872= -0.427

5) Since the calculated value of t =-0.427 does not  fall in the critical region so we accept H0 and conclude that there is enough evidence to show that mean difference in the  age of onset of symptoms and age of diagnosis is  25 months  .

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3 years ago
What is the standard form for 8 hundreds plus 2 hundreds
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Answer:

800+200

Step-by-step explanation:

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3 years ago
Read 2 more answers
Explain how you would solve -5/8 divided by 2/3 and what the solution is?
andre [41]

Answer:

-15/16

Step-by-step explanation:

-5/8 ÷ 2/3

Copy dot flip

-5/8 * 3/2

Multiply the numerators

-5*3 = -15

Multiply the denominators

8*2 =16

Put the numerator over the denominator

-15/16

4 0
3 years ago
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