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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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Jenny’s mother is 5 years older than twice Jenny's age. The sum of their ages is 62 years. This is represented by the equation x
Salsk061 [2.6K]

Answer:

Jenny´s age is 19 and her mother is 43.

Step-by-step explanation:

1. Plug in the first value of the set

41 is different from 62, so Jenny isn´t 12 years old.

2. Plug in the second value of the set

50 is different from 62, so Jenny isn´t 15 years old.

3. Plug in the third value of the set

59 is different from 62, so Jenny isn´t 18 years old.

4. Plug in the fourth value of the set

Therefore Jenny´s 19 years old.

5. Calculate Jenny´s mother age:

As the sum of their ages is 62 ages, we have the following equation

where

x=Jenny´s age

y=Jenny´s mother age

Therefore Jenny's mother age is 43 years old.

pls mark me brainliest

8 0
2 years ago
A recent poll of 80 randomly selected Californians showed that 38% ( = 0.38) believe they are doing all that they can to conserv
Bad White [126]
The result 0.14 as percentage is 14%

Margin error is 38% ⁺/₋ 14%
4 0
2 years ago
Product A is and 8oz bottle of cough medication that's sells for $1.36. Product B is 16oz bottle of cough medication that costs
zhenek [66]

Answer:

Product B

Step-by-step explanation:

Divide the number of ounces i the bottle by the price of the bottle. Product A has a unit price of $0.17 and Product B has a unit price of $0.20. Therefore Product B has a lower unit price :))

4 0
2 years ago
During a college fun-fair, the entrance fee for students was $12 and for teachers (and their family members) it was $30. 75 peop
solmaris [256]

Answer:

25 Students attended and 50 teachers and their family members attended

Step-by-step explanation:

50x30=1500

25x12=300

1500+300=1800

Hope this helped :)

3 0
2 years ago
Jenny paid $8.54 for pizza.she now has $16.79.with how much money did she start
otez555 [7]

Answer:

$25.33

Step-by step explanation:

In the start she had $8.54 + $16.79= $25.33

4 0
2 years ago
Read 2 more answers
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