Answer:
215
Step-by-step explanation:
20+13(3(9)-12)
20+13(27-12)
20+13(15)
20+195
215
Answer:x = (5 + 3/7) - (2 + 1/5)*x
112x = 190
x = 95
56
≈ 1.696429
Answer:
Claim :The proportion, p, of full-term babies born in their hospital that weigh more than 7 pounds is 36%.
n = 170
x = 56
We will use one sample proportion test
![\widehat{p}=\frac{x}{n}](https://tex.z-dn.net/?f=%5Cwidehat%7Bp%7D%3D%5Cfrac%7Bx%7D%7Bn%7D)
![\widehat{p}=\frac{56}{170}](https://tex.z-dn.net/?f=%5Cwidehat%7Bp%7D%3D%5Cfrac%7B56%7D%7B170%7D)
![\widehat{p}=0.3294](https://tex.z-dn.net/?f=%5Cwidehat%7Bp%7D%3D0.3294)
The proportion, p, of full-term babies born in their hospital that weigh more than 7 pounds is 36%.
![H_0:p \neq 0.36 \\H_a:p= 0.36](https://tex.z-dn.net/?f=H_0%3Ap%20%5Cneq%200.36%20%5C%5CH_a%3Ap%3D%200.36)
Formula of test statistic =![\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Cwidehat%7Bp%7D-p%7D%7B%5Csqrt%7B%5Cfrac%7Bp%281-p%29%7D%7Bn%7D%7D%7D)
![=\frac{0.3294-0.36}{\sqrt{\frac{0.36(1-0.36)}{170}}}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B0.3294-0.36%7D%7B%5Csqrt%7B%5Cfrac%7B0.36%281-0.36%29%7D%7B170%7D%7D%7D)
=−0.8311
Now refer the p value from the z table
P-Value is .202987 (Calculated by online calculator)
Level of significance α = 0.05
Since p value < α
So we reject the null hypothesis .
Hence the claim is true
782% is just 782/1000. In decimal form, this works out 0.782. Now both the numerator and denominator look like they have common factors of 2. When reduced, that takes us to 391/500. That's about as simple as this can get! This cannot be written as a mixed number, the reason being that the numerator is not larger than the denominator, so it's just left as a fraction.