18, respectively. The distribution of the population is unknown. The mean and the standard error of the mean are (assuming infinite population) 200 and 18 15. Random samples of size 81 are taken from an infinite population whose mean and standard deviation are 200 and a. 200 and 2 b. 81 and 18 9 and 2 C. d. 16. A population has a mean of 300 and a standard deviation of 18. A sample of 144 observations will be taken. The probability that the sample mean will be between 297 to 303 is (assuming infinite population) 0.9544 0.4332 a. b. 0.8664 C. d. 0.0668 17. Doubling the size of the sample will reduce the standard error of the mean to one-half its current value b. a. have no effect on the standard error of the mean double the standard error of the mean d. reduce the standard error of the mean to approximately 70% of its current value C. 18. A finite population correction factor is needed in computing the standard deviation of the sampling distribution of sample means whenever the population is infinite b. a. whenever the sample size is less than 5% of the population size The correction factor is not necessary if the population has a normal distribution d. whenever the sample size is more than 5% of the population size с. In a local university, 40% of the students live in the dormitories. A random sample of 80 students is selected for a particular study. (assuming infinite population) 19. The standard deviation of, known as the standard eror of the proportion is approximately 0.5477 b. a. 0.0547 C. 5.477 d. 54.77 20. Refer to the information in Q19. The probability that the sample proportion (the proportion living in the dormitories) is between 0.30 and 0.50 is 0.9328 b. 0.4664 a. 0.0336 d. 0.0672 C.

Q: Evaluate: O -0.05+j0.602 O -0.05-j0.602 0.05+j0.602 O 0.05-jo.602

A:

Q: Evaluate T(n) and O(n) for the n = 84 and n = 2100.

A:

Q: 丰 ZZ= ? А. X В. U С.Т OA O B

A:

Q: Evaluate the following 1. j6 2. j245

A: For imaginary unit we use j instead of i in various chapters like electricity, python.  so,…

Q: S t Vat²-b dt

A:

Q: Aus: J 5C -2X

A:

Q: and

A:

Q: Find C(18, 4). 73 440 4 896 3 060 2 400

A: Combination using formula

Q: Fnd A A= 2.

A:

Q: #9E, F and G wasnt answered

A: Given; 9) e) (cos(theta)+sin(theta))/(cos(theta)-sin(theta))=1+2tan(theta)/(1-tan(theta)) f)…

Q: -5 w2 In(w) dw

A:

Q: find the Valus of xad y for which 2.

A:

Q: N =   Q + 1     for Q              Q

A: Given: N=Q+1Q

Q: B find value for x for AB = 32 and CD=68

A:

Q: cotx Evaluate : co dx

A:

Q: Find Z if x = 12, x= 8 and S= 4.

A: The formula of Z-score is,

Q: What is dfw?

A: The given table contains three treatment, and the sample size is 11.

Q: R =  C − S t ; S

A: R=C-St

Q: t(r) dr

A:

Q: P(Vm,T); PVm = RT ӘР JVm / T avm ӘT ӘТ ӘР P Vm = = =

A:

Q: Oproved that 5.ri YzT3= A

A:

Q: = 4 . Enter the value of x, where 240 = 4.

A:

Q: 7. Solve for the unknown in each triangle. a) b) A D 21 37° 9 cm 46⁰ 26 с E 53⁰ a F B

A: Given problems:-

Q: Given x = x=20₁ 6 what is the exact value of cos(2n-x)?

A:

Q: (x, 5), (2, 6) m = 3/4

A: Let the equation of line be y=mx + b  ...(i) We have m=3/4 = 0.75

Q: LOWEST SCORE FOR  b c d

A: From the given information, Mean (µ) = 73 Standard deviation (σ) = 7 Grades are assigned such that…

Q: W X Y Exs. 4, 5

A: Given: mXW⏜=60, mWZ⏜=70, and mZY⏜=70.

Q: Luestic Given the circumference of the circle and the measure of the central angle ACB, find the…

A:

Q: C. 2

A:

Q: S=P+Prt for r

A: The equation is given by,

Q: P= Poet.

A:

Q: What is the value of r?

A: Calculated values :  N1 = 200  dN1/dt = 100    N2 = 400  dN2/dt = 160