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Aneli [31]
3 years ago
14

To round 56.487 to the nearest tenth, you find the digit in the what place?

Mathematics
1 answer:
sveta [45]3 years ago
4 0

Answer:

56.5

Step-by-step explanation:

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A study sampled 350 upperclassmen (Group 1) and 250 underclassmen (Group 2) at high schools around the city of Houston. The stud
iris [78.8K]

Answer:

-0.048

Do not reject  H_0:P_1-P_2=0

Step-by-step explanation:

From the question we are told that

Sample size n_1=350

Sample size n_2=250

Sample proportion 1  \hat P= \frac{25}{350} =>0.07

Sample proportion 2 \hat P= \frac{19}{250} =>0.076

95% confidence interval

Generally for 95% confidence level

Level of significance

 \alpha = 1-0.95=>0.05

 \alpha /2=\frac{0.05}{2} =>0.025

Therefore

Z_a_/_2=1.96

Generally the equation for confidence interval between P_1 - P_2  is mathematically given as

(\hat P_1-\hat P_2)\pm Z_a_/_2\sqrt{\frac{\hat P_1(1-\hat P_1)}{n_1}+\frac{\hat P_2(1-\hat P_2)}{n_2}  }

(0.07-0.076)\pm 1.96\sqrt{\frac{0.07(1-0.07)}{350}+\frac{0.076(1-0.076)}{250}  }

(0.07-0.076)\pm 1.96\sqrt{4.66896*10^-^4  }

(-0.006)\pm 0.042

(-0.006)- 0.042=>-0.048

(-0.006)+ 0.042=>0.036

Therefore

Confidence interval is

-0.048

Conclusion

Given the confidence interval has zero

Therefore do not reject  H_0:P_1-P_2=0

6 0
2 years ago
Quran records that his hamster an turn the wheel in its cage to make 1 revolution in 0.5 minuet. How many revolutions can the ha
s344n2d4d5 [400]
20.5 divided by 0.5 = 41 rev
6 0
3 years ago
Read 2 more answers
Problem page the sum of two numbers is 56 . the smaller number is 16 less than the larger number. what are the numbers?
igomit [66]
Create equations using the given information
1) x+y=56
2) y=x-16
Substitute the value of y into the 1st equation and simplify
1)x+x-16=56
   2x=72
   x=36
Substitute the value of x into the 1st equation and simplify
1)x+y=56
   36+y=56
   y=20

Answer: 20 and 36

8 0
3 years ago
What is 7x 7(10) =98 in slope intercept form?
labwork [276]
7x+70=98

7x=28

x=4
this is the answer
4 0
3 years ago
A triangular flag has an area of 22 cm². Jon measures the height as 8 cm, what is the base length?
dedylja [7]
The base length is 5.5 cm.

Explanation:

Area of triangle = base x height x 1/2

Let b cm be the base length of the triangular flag.

22 = b x 8 x 1/2

22 x 2 ÷ 8 = b

b = 44 ÷ 8

b = 5.5
4 0
3 years ago
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