Q1) Answer two of the following branches A- Which of the random variable is discrete and which it is continuous? 1. Electronic branch students' lengths 2. Thermometer readings 3. Readings of Speed counter in the car B- Select the correct answer. 1. The probability of getting two times of number 1 in 10 die tosses with Bernoulli trials is; 1- 0.3 II- 0.35 III- None of them 2. the probability of Z= 0.03 is 1- 0.008 II-0.120 III- None of them 3. The mean and variance of the getting two times of number 4 in 10 fair die tosses with Bernoulli trails is I- Mean = 10*4 II- Mean (4)*(1/10) III- None of them C- True or false variance 10*4*(10-4) variance = 10* (1/4)*(1/(10-4)) I- If the sampling distribution of two statistics have the same mean, the statistic with the smaller variance is called a more efficient estimator of the mean. II- The reliability of conclusions drawn concerning a population is considered good when the selection of samples is random. III- The member of the sample which can be choosing multi-time one by one, this sample can continue to infinity.
Q1) Answer two of the following branches A- Which of the random variable is discrete and which it is continuous? 1. Electronic branch students' lengths 2. Thermometer readings 3. Readings of Speed counter in the car B- Select the correct answer. 1. The probability of getting two times of number 1 in 10 die tosses with Bernoulli trials is; 1- 0.3 II- 0.35 III- None of them 2. the probability of Z= 0.03 is 1- 0.008 II-0.120 III- None of them 3. The mean and variance of the getting two times of number 4 in 10 fair die tosses with Bernoulli trails is I- Mean = 10*4 II- Mean (4)*(1/10) III- None of them C- True or false variance 10*4*(10-4) variance = 10* (1/4)*(1/(10-4)) I- If the sampling distribution of two statistics have the same mean, the statistic with the smaller variance is called a more efficient estimator of the mean. II- The reliability of conclusions drawn concerning a population is considered good when the selection of samples is random. III- The member of the sample which can be choosing multi-time one by one, this sample can continue to infinity.
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter29: Dc Generators
Section: Chapter Questions
Problem 1PA: You are working as an electrician in a large steel manufacturing plant, and you are in the process...
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Transcribed Image Text:Q1) Answer two of the following branches
A- Which of the random variable is discrete and which it is continuous?
1. Electronic branch students' lengths
2. Thermometer readings
3. Readings of Speed counter in the car
B- Select the correct answer.
1. The probability of getting two times of number 1 in 10 die tosses with Bernoulli trials
is;
1- 0.3
II- 0.35
III- None of them
2. the probability of Z= 0.03 is
1- 0.008
II-0.120
III- None of them
3. The mean and variance of the getting two times of number 4 in 10 fair die tosses with
Bernoulli trails is
I- Mean = 10*4
II- Mean (4)*(1/10)
III- None of them
C- True or false
variance
10*4*(10-4)
variance = 10* (1/4)*(1/(10-4))
I- If the sampling distribution of two statistics have the same mean, the statistic with
the smaller variance is called a more efficient estimator of the mean.
II- The reliability of conclusions drawn concerning a population is considered good
when the selection of samples is random.
III- The member of the sample which can be choosing multi-time one by one, this
sample can continue to infinity.
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