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Stella [2.4K]
2 years ago
14

PLEASE HELP ME

Mathematics
1 answer:
kvasek [131]2 years ago
5 0

Answer:

28

Step-by-step explanation:

The binomial coefficient is calculated as:

nCx=\frac{n!}{x!(n-x)!}

It means that there are nCx ways to select x elements from a group of n elements.

So, If the researcher wants to determine the probability that 6 out of the next 8 individuals in his community are in favor of the president, we can replace n by 8 and x by 6 and calculated the binomial coefficient as:

8C6=\frac{8!}{6!(8-6)!}=28

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Cardiovascular disease is a major cause of death and illness worldwide, with high blood pressure and high LDL cholesterol both b
valkas [14]

Answer:

Null and alternative hypotheses:

H0: p1 = p2

H1: p1 ≠ p2

To find the sample proportions, we have the following:

p'1 = \frac{x_1}{n_1} = \frac{113}{3180} = 0.0355

p'2 = \frac{x_2}{n_2} = \frac{157}{3168} = 0.0495

p' = \frac{(x_1 + x_2}{n_1 + n_2} = \frac{113 + 157}{3180 + 3168} = 0.0425

Calculate Z statistics:

z = \frac{(p1 -p2)}{\sqrt{(p'(1-p')*(\frac{1}{n1}+ \frac{1}{n2})}}

= \frac{(0.0355 - 0.0495)}{\sqrt{(0.0425*(1-0.0425) * (\frac{1}{3180} + \frac{1}{3168})}} = -2.764

Z = -2.764

P-value = 0.00285

The pvalue is low.

Since the pvalue is low, reject null hypothesis, H0.

Conclusion:

There is strong evidence that patients experiencing the primary outcome is different for those receiving the treatment compared to those without

7 0
2 years ago
I need help with this problem! Please Help<br> t=-2.74 + sqrt(2.74^(2)-4*-4.9*(-10)) -: 2*-4.9
Ulleksa [173]

Answer:

Step-by-step explanation:

t=(-2.74 + sqrt(2.74^(2)-4*-4.9*(-10))) / -2*-4.9

t=(-2.74 + sqrt(7.5076-4*+49))/9.8

t=(-2.74 + sqrt(7.5076+45))/9.8

t=(-2.74 + sqrt(52.5076))/9.8

t=(-2.74/9.8)+(sqrt(52.5076))/9.8

this is simplest form, next will be rounded answers

t=0.45981763305

3 0
3 years ago
Read 2 more answers
Please help it would be nice
Shtirlitz [24]

Answer:

d

Step-by-step explanation:

Soooo,

d = 2r

(29) = 2r

29/2 = 2r/2

14.5 = r

6 0
2 years ago
If you can drive 340 miles in 5 hours, what is the unit rate? *<br> (2 Points)<br> Enter your answer
Marianna [84]
I believe it would be 68 miles per hour! To find the unit rate here you would divide miles by hours, or 340 by 5, which would give you 68.
3 0
3 years ago
Find the value of x.<br> 48<br> (7x + 13)<br> A. 7<br> B. 11<br> C. 3<br> D. 5
Lesechka [4]
The value of x is D. 5
3 0
2 years ago
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