Answer:
V=14
Step-by-step explanation:
3v=42 divide both sides by 3. getting v=14
Answer: ![(0.10\ ,\ 0.18)](https://tex.z-dn.net/?f=%280.10%5C%20%2C%5C%200.18%29)
Step-by-step explanation:
According to the empirical rule, the 95% confidence interval for the true population proportion is given by :-
![(p'-2\sigma_{p'}\ ,\ p'+2\sigma_{p'})](https://tex.z-dn.net/?f=%28p%27-2%5Csigma_%7Bp%27%7D%5C%20%2C%5C%20p%27%2B2%5Csigma_%7Bp%27%7D%29)
Given : . The survey resulted in a sample proportion of p′=0.14, with a sampling standard deviation of σp′=0.02, who preferred reading an e-book.
Then, the 95% confidence interval for the true proportion of adults who prefer e-books will be :-
![(0.14-2(0.02)\ ,\ 0.14+2(0.02))\\\\=(0.14-0.04\ ,\ 0.14+0.04)\\\\=(0.10\ ,\ 0.18)](https://tex.z-dn.net/?f=%280.14-2%280.02%29%5C%20%2C%5C%200.14%2B2%280.02%29%29%5C%5C%5C%5C%3D%280.14-0.04%5C%20%2C%5C%200.14%2B0.04%29%5C%5C%5C%5C%3D%280.10%5C%20%2C%5C%200.18%29)
Hence, the 95% confidence interval for the true proportion of adults who prefer e-books= ![(0.10\ ,\ 0.18)](https://tex.z-dn.net/?f=%280.10%5C%20%2C%5C%200.18%29)
Answer:
Yes; James got 76 answers correct
Step-by-step explanation:
Round 1: 50 x 0.8 = 40
Round 2: 40 x 0.75 = 30
Round 3: 30 x 0.2 = 6
40 + 30 + 6 = 76
Yes. Parenthesis first, then if any exponents, then multiplication or division, then addition and subtraction. PEMDAS.
Answer:
33 1/3
Step-by-step explanation:
25/1 * 4/3 =
100/3 = 33.3... or 33 1/3