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brilliants [131]
1 year ago
12

Is the right arm or left arm stronger? Twenty five right handed people were studied. They were asked to do as many bicep curls a

s possible, first with their right arm and then with their left arm. Note:The differences were calculated as right-left. The 95% confidence interval for the true mean difference is (-9.242, 0.2472). Which of the following statements is the correct interpretation? Group of answer choices There is convincing evidence that the right arm can perform, on average, a different number of curls than the left arm. The left arm can perform more bicep curls than the right arm. The right arm can perform more bicep curls than the left arm. There is not enough evidence to say that the right arm and left arm can perform a different number of curls on average.

Mathematics
1 answer:
melisa1 [442]1 year ago
5 0

Answer:

The p-value should be higher than 0.05

Step-by-step explanation:

solution is found below

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luke paid 30 percent less for a used car than its original price of $3,500. how much did luke pay for the car?​
serg [7]

Answer:

Im not sure ok

Step-by-step explanation:

Im trying to solve too

5 0
2 years ago
Read 2 more answers
Mrs. Matthews wants to have $18,000 in the bank in 2 years. If she deposits $9000 today at 6% compounded quarterly for 2 years,
OverLord2011 [107]
Depends if you want
1. find how much he will earn, find the differnce between that and 18000
2. see how much to invest till he will  get 18000


A=P(1+ \frac{r}{n})^{nt}

A=futre amount
P=present amout
r=rate in decimal
n=number of times per year ccompounded
t=time in years


1.
A=?
P=9000
r=0.06
n=4 (quarter means 4 times per year)
t=2
?=9000(1+ \frac{0.06}{4})^{(4)(2)}
?=9000(1+ 0.015)^{8}
?=9000(1.015)^{8}
?=10138.4 will be earned
18000-10138.4=7861.6 needed

2.
A=18000
P=9000+x
r=0.06
n=4 (quarter means 4 times per year)
t=2
18000=(9000+x)(1+ \frac{0.06}{4})^{(4)(2)}
18000=(9000+x)(1+ 0.015)^{8}
18000=(9000+x)(1.015)^{8}
divide both sides by 1.015^8
15978.8=9000+x
minus 9000 both sides
6978.8 needed




if he willnot be investing any more, he needs $7861.6 more
if he will invest more he will need to invest $6978.8 more




6 0
2 years ago
Read 2 more answers
Each locker is shaped like a rectangular prism. Which has more storage space? explain/
seropon [69]
Locker 1 has more storage space because it has a greater volume.
The volume of locker 1 is 8,640 (48x15x12)
The volume of locker 2 is 7,200 (60x10x12)

I hope this helps.
4 0
2 years ago
A company makes traffic signs.One of their signs can be modeled by an equilateral triangle with a perimeter of 144 inches. The c
Mars2501 [29]

Answer:

The perimeter of the larger sign : 144*1,25= 180 inches

Side of the triangle= 180/3= 60 inches

square of the height= 60^(2) - 30^(2)= 2700 ( Pythagoras' theorem)

height= square root ( 2700)= 51,96

Step-by-step explanation:


6 0
2 years ago
If having a warranty on a car is important a person should buy a car that is _______
Ket [755]

Answer:

the answer is new

Step-by-step explanation:

I just took the test

7 0
1 year ago
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