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Sergeu [11.5K]
2 years ago
9

B. What percent is 17 out of 40? ​

Mathematics
2 answers:
vodomira [7]2 years ago
7 0

Answer:42.5

Step-by-step explanation:

Alex_Xolod [135]2 years ago
5 0

Answer:

42.5%

Step-by-step explanation:

This can be written as 17/40 and when you multiply the numerator and denominator by 2.5, you get 42.5/100 which is 42.5%.

Hope this helps!

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The General Social Survey asked a large number of people how much time they spent watching TV each day. The mean number of hours
DerKrebs [107]

Answer:

Yes, we can conclude that the population standard deviation of TV watching times for teenagers is less than 2.66

Step-by-step explanation:

H0 : σ² = 2.66²

H1 : σ² < 2.66²

X²c = (n - 1)*s² ÷ σ²

sample size, n = 40

Sample standard deviation, s = 1.9

X²c = ((40 - 1) * 1.9²) ÷ 2.66²

X²c = 140.79 ÷ 7.0756

X²c = 19.897

Using a confidence level of 95%

Degree of freedom, df = n - 1 ; df = 40 - 1 = 39

The critical value using the chi distribution table is 25.6954

Comparing the test statistic with the critical value :

19.897 < 25.6954

Test statistic < Critical value ; Reject the Null

Hence, we can conclude that the population standard deviation of TV watching times for teenagers is less than 2.66

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3 years ago
What shape is the base of a hockey puck?<br> rectangle<br> circle<br> semi-circle<br> ellipse
ratelena [41]

Answer:circle

Step-by-step explanation:

5 0
2 years ago
If 20lbs is about 9 kilograms and a dog weighs 30lbs what’s the weight in kilograms
DanielleElmas [232]
The dogs weight in kilograms is 13.5. Take the nine and divide it by 20, then multiply the 30 into that number.
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3 years ago
John has 34 bottle caps Logan has 4 times as many bottle caps as John ?
ELEN [110]

Answer:

136

Step-by-step explanation: 34 multiplied by 4

7 0
2 years ago
Read 2 more answers
What is the volume? 3 yd 10 yd 5 yd
zmey [24]
Volume is the product of the three dimensions...

V=xyz in this case:

V=3*10*5

V=150 yd^3
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