please state the conditions when you are allowed to use the "Z" formula as opposed to using the "T" formula.
please state the conditions when you are allowed to use the "Z" formula as opposed to...
supose you want to find the confidence interval for the mean. 1. when would you use the formula involving the t? 2. when would you use the formula involving the z? 3. if sigma is known, n <30, and you have no information about the population distribution. which of the following choices would be the correct course of action to take to find the confidence interval? a. use the t-formula b. use the z- formula c. something else
When do we use t vs. z distributions? What are assumptions that must be met when using the t distribution? When can we assume equal population variances? What are degrees of freedom? When do we need to calculate them? What do we estimate when solving the formula for finding z obtained with sample proportions in the two sample case? How do we estimate it?
traffic Describe two possible conditions that would cause you to consider implementing split phasing as opposed to permitted phasing.
Please explain as much as possible. Why did you use the equation? Or what conditions did you see from the question? etc. Calculate AS for the system when the state of 3.00 mol of gas molecules for which Cpm = R, is changed from 25 °C and 1.00 atm to 125 °C and 5.00 atm.
3. There are an infinite number of possible normal distributions and we use the formula z = (x - m)/ s where m = mean and s = standard deviation, to convert values from any normal distribution to the standard normal distribution. We then calculate the answer in terms of the standard normal distribution and say that the answer we got is also the answer for the normal distribution we were working with. Why are we allowed to do that?...
Please assist me using the BAII Plus calculator. We are not allowed to use excel on the exam. What is the weighted average formula You have a portfolio consisting solely of stock C and stock D. The portfolio has an expected return of 10.1 percent. Stock C has an expected return of 13.2 percent while stock d is expected to return 7.6 percent. What is the portfolio weight of stock C?
You can use both the t-statistic and the Z-statistic to test hypotheses about the mean of a population. The test that uses the t-statistic is typically referred to as a t test, while the test that uses the z-statistic is commonly called a z test. IO Which of the following statements are true of the t-statistic and the t distribution? Check all that apply. The formula for the t-statistic is t = (x - 1) / s/vn. When the population...
show work please Problem 1: Use the following to answer questions a) – e): In a survey conducted by the Gallup organization September 6-9, 2012, there were 1,017 adults asked "In general, how much trust and confidence do you have in the mass media - such as newspapers, TV, and radio - when it comes to reporting the news fully, accurately, and fairly?" Of the 1,017 respondents, 214 said they had "no confidence at all." The research question: Does this...
(2) If n (a - b), prove that wa=wb. For this problem-set, you are allowed to use de Moivre's theorem and the following exponential laws If z is a nonzero complex number, then (26) = 24+6 = 36+ = 2(2), Va, bez and = (26)". Va, b e Z. (+) = 26 = You are not allowed to use Euler's formula. For the following problems, w:= cos () + sin()iec, where n is a fixed integer greater than 1.
Derive the state diagram for a FSM that has an output z and an input w. This machine has to generate z-1 when the previous four values of w were 1011 or 1110 otherwise, z-0. Overlapping input patterns are allowed. An example of the desired behavior is: w: 01011110101001110110 z: 00000100100000000101 Derive the state diagram for a FSM that has an output z and an input w. This machine has to generate z-1 when the previous four values of w...