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lakkis [162]
2 years ago
14

Suppose a random sample of 84 men has a mean foot length of 26.9 cm with a standard deviation of 2.1 cm. What is an 95% confiden

ce interval for this data?
Question 3 options:

24.905 to 28.895


24.8 to 29


22.784 to 31.016


21.52 to 32.28
Mathematics
2 answers:
Eduardwww [97]2 years ago
8 0

Answer:

Number of People Selected for this Hypothesis = 84

Mean =M = 26.9 cm

Standard Deviation = S= 2.1 cm

Z_{Score}=\frac{X_{score}-M}{S}

Z=\frac{84-26.9}{2.1}\\\\ Z=\frac{57.1}{2.1}\\\\ Z=27.190

Z_{95 percent}=1.96

Confidence Interval for this Data will be

  27.190 -1.96 ≤ Z ≤ 27.190 +1.96

  25.230 ≤  Z ≤ 29.15

Option C: 22.784 to 31.016.

matrenka [14]2 years ago
4 0
I do belive that it is 22.905 to 28.895
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Find a linear equation to model this real-world application:
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The linear equation to model the company's monthly expenses is y = 2.5x + 3650

<em><u>Solution:</u></em>

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3 0
2 years ago
Renting a truck costs $55.00 per day and $0.38 per mile when the driver goes beyond the 40 free miles allotted. How much would S
solmaris [256]
Well we need to multiply 55 by 2 because of the 2 days of renting. 55 * 2 = 110. Now we need to subtract 40 from 94 to find how many miles Samantha drove over 40. So 94 - 40 = 54. Now we need to multiply 54 by 0.38 to get the cost Samantha has to pay. 54 * 0.38 = 20.52. Finally we need to add the cost of 2 days of renting to the cost of the additional miles. 110 + 20.52 = 130.52. The total that Samantha has to pay for the truck is $130.52
I hope this was helpful and if so, please leave a good rating and thanks and maybe even brainliest answer. Thank you I really appreciate it. Have a nice day!
4 0
2 years ago
Read 2 more answers
HURRY PLEASE When 5 and 6 are multiplied by the same factor, how do the ratios compare to the ratio 5:6? The ratios are equivale
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Answer:

The ratios are equivalent.

Step-by-step explanation:

If you multiply both 5 and 6, the ratio stays the same.

5:6 = 10:12 = 15:18 = 20:24 etc.

You can try this by dividing the larger number by the smaller number. You'll always get 1.2 as the "relationship", or ratio, is preserved.

24/20 = 1.2

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6 0
2 years ago
A charity fair raised $6,000 by selling 500 lottery tickets. There were two types of lottery tickets: A tickets cost $10 each, a
julsineya [31]





x= A ticket 
y=b ticket
x+y=500
10x+60y=6000 
-------------------
   10x+60y=6000 
-  x+y=500 (*10) ---> 10x+10y=5000
-------------------
   10x+60y=6000
-  10x+10y=5000
-------------------
50y=1000
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x+y=500
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x=480
a ticket=480
 answer is the last option , 
6 0
2 years ago
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