QuestionAssume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the criticalvalue ta/2. (b) find the critical value za/2, or (c) state that neither the normal distribution nor the t distribution40applies.30The confidence level is 90%, o is not known, and the histogram of 57 player salaries (in thousands of dollars) offootball players on a team is as shown.20-10-4000 8000 12000 16000 20Salary (theusands of dellars)Select the corect choice below and, if necessary, fill in the answer box to complete your choice.OA la12=(Round to two decimal places as needed.)OB.Za/2(Round to two decimal places as needed.)OC Neither the nomal distribution nor thet distribution applies.Click to select and enter your answerts)9MB#2$&3568.9-

Given: σ is unknown. α=0.1 n=57 Since the σ is unknown, it is appropriate to use t distribution. The…

Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value ta/2, (b) find the critical value za/2, or (c) state that neither the normal distribution nor the t distribution 40 30 applies. 20- The confidence level is 90%, o is not known, and the histogram of 57 player salaries (in thousands of dollars) of football players on a team is as shown. 10- 4000 8000 12000 16000 20 Salary (thausands of de) Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA la12= (Round to two decimal places as needed.) OB 2/2- (Round to two decimal places as needed.) OC Neither the nomal distribution nor the t distribution applies Click to slect and enter your answer(s) Frequency

Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value ta/2, (b) find the critical value za/2, or (c) state that neither the normal distribution nor the t distribution 40 30 applies. 20- The confidence level is 90%, o is not known, and the histogram of 57 player salaries (in thousands of dollars) of football players on a team is as shown. 10- 4000 8000 12000 16000 20 Salary (thausands of de) Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA la12= (Round to two decimal places as needed.) OB 2/2- (Round to two decimal places as needed.) OC Neither the nomal distribution nor the t distribution applies Click to slect and enter your answer(s) Frequency

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value t12, (b) find the critical value z, 12, or (c) state that neither the normal 40- distribution nor the t distribution applies. 30- The confidence level is 95%, o is not known, and the histogram of 61 player salaries (in thousands of dollars) of football players on a team is as shown. 20- 10- 0- 0. 4000 8000 12000 16000 20000 Salary (thousands of dollars) .... Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. ta/2= (Round to two decimal places as needed.) В. Za/2 = (Round to two decimal places as needed.) O C. Neither the normal distribution nor the t distribution applies. Frequency
Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value ta/2, (b) find the critical value za/2, or (c) state that 40- neither the normal distribution nor the t distribution applies. 30- The confidence level is 99%, o is not known, and the histogram of 62 player salaries (in thousands of dollars) of football players on a team is as shown. 20- 10- 4000 8000 12000 16000 20000 Salary (thousands of dollars) Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. ta/2 = %3D (Round to two decimal places as needed.) OB. Za/2= (Round to two decimal places as needed.) C. Neither the normal distribution nor the t distribution applies. Frequency
Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value ta/2. (b) find the critical value za/2. or (c) state that neither the normal distribution nor the t distribution applies. Here are summary statistics for randomly selected weights of newborn girls: n=D156, x 29.3 hg, s = 7.7 hg. The confidence level is 90%.
Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value to/2, (b) find the critical value Zu/2, or (c) state that neither the normal distribution nor the t distribution applies. The confidence level is 95%, o is not known, and the histogram of 64 player salaries (in thousands of dollars) of football players on a team is as shown. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. /2² (Round to two decimal places as needed.) OB. Z/2 = (Round to two decimal places as needed.) O C. Neither the normal distribution nor the t distribution applies. ← Frequency 40- 30- 20- 10- ó 4000 8000 12000 16000 20000 Salary (thousands of dollars) G
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Tina catches a 14-pound bass. She does not know the population mean or standard deviation. So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds. Find the t and calculate a 95% (α = .05) confidence interval.
Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value t,/2, (b) find the critical value z/2, or (c) state that neither the normal 40- distribution nor the t distribution applies. 30- The confidence level is 95%, o is not known, and the histogram of 58 player salaries (in thousands of dollars) of football players on a team is as shown. 20- 10- 0- 4000 Salary (thousands of dollars) 8000 12000 16000 20000 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. ta/2 = %3D (Round to two decimal places as needed.) В. Za/2 =| (Round to two decimal places as needed.) O C. Neither the normal distribution nor the t distribution applies. Frequency
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Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value tα/2, (b) find the critical value zα/2, or (c) state that neither the normal distribution nor the t distribution applies.The confidence level is 99%, σ is not known, and the histogram of 63 player salaries (in thousands of dollars) of football players on a team is as shown. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A.tα/2=_(Round to two decimal places as needed.) B.zα/2=_(Round to two decimal places as needed.) C.Neither the normal distribution nor the t distribution applies
Car repairs: Let E be the event that a new car requires engine work under warranty and let T be the event that the car requires transmission work under warranty. Suppose that P(E) - 0.09, P(T) =0.07, P(E and T) =0.06. (a) Find the probability that the car needs work on either the engine, the transmission, or both. (b) Find the probability that the car needs no work on the engine.
Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value t/2. (b) find the critical value z/2, or (c) state that neither the normal distribution nor the t distribution applies. 30- The confidence level 99%, a is not known, and the histogram of 54 player salaries (in thousands of dollars) of football players on a team is as shown. 20- 10- 0- O 4000 8000 12000 1600 20000 Salary (thousands of dollars) Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A t4/2= (Round to two decimal places as needed.) Za12= (Round to two decimal places as needed.) OB. OC. Neither the normal distribution nor the t distribution applies.
Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96