The main advantage of a random sample is that the sample results can be_. a extended...
The main advantage of a random sample is that the sample results can be_.
a extended to estimating the convenience population
b extended to estimating something of interest in the population
c measured and controlled
d generated by a computer
e generated by hand
Homework Answers
All these are advantages of a random sample except for option (c) , random sample cannot be controlled .
But the main advantage of random sample is that the sample results can be extended to estimating something of interestr in the population (like population mean /sd etc.) .
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The main advantage of a random sample is that the sample results
can be_.
a extended...
(1 point) For each problem, select the best response. (a) A simple random sample of size...
(1 point) For each problem, select the best response. (a) A simple random sample of size n is defined to be A. a sample of size n chosen in such a way that every unit in the population has the same chance of being selected. B. a sample of size n chosen in such a way that every set of n units in the population has an equal chance to be the sample actually selected. C. a sample of size...
1 point) For each problem, select the best response. (a) A simple random sample of size...
1 point) For each problem, select the best response. (a) A simple random sample of size n is defined to be A. a sample of size n chosen in such a way that every unit in the population has a known nonzero chance of being selected. B. a sample of size n chosen in such a way that every unit in the population has the same chance of being selected. C. a sample of size n chosen in such a...
4. A simple random sample of 100 customers is selected from an account receivable portfolio and...
4. A simple random sample of 100 customers is selected from an account receivable portfolio and the sample mean account balance is $3000. The population standard deviation σ is known to be $300. ( 8 marks) a. Construct a 90% confidence interval for the mean account balance of the population. b. What is the margin of error for estimating the mean account balance at the 90% confidence level? c. Construct a 90% confidence interval for the mean account balance of...
The main advantage of factorial designs is that they can be used to a) study individual...
The main advantage of factorial designs is that they can be used to a) study individual differences b) reduce measurement error c) study interactions between independent variables d) study the main effects of independent variables thank you :)))
a random sample of 25 is collected for a continuoue random variable x. the observed sample...
a random sample of 25 is collected for a continuoue random variable x. the observed sample mean is 172.5 and the sample deviation is 15.4. a. construct a95% confidence interval for the population mean b. can the population mean of X, ux be equal to 160? c. what is the probability that ux is equal or less than 178.86 d. what about 166.14 e. what is the probabilith that ux=172.5?
A random sample of size n= 15 obtained from a population that is normally distributed results...
A random sample of size n= 15 obtained from a population that is normally distributed results in a sample mean of 45.8 and sample standard deviation 12.2. An independent sample of size n = 20 obtained from a population that is normally distributed results in a sample mean of 51.9 and sample standard deviation 14.6. Does this constitute sufficient evidence to conclude that the population means differ at the a = 0.05 level of significance? Click here to view the...
#6 weekend before the final exam week. Her assistant took a random sample of 250 stadents...
#6
weekend before the final exam week. Her assistant took a random sample of 250 stadents The answer on "whether you visited campus bars on the weekend before the final exam week" from students in the sample is an example of A) a table of random numbers C) a categorical variable B) a continuous variable D) a discrete variable 3) 3) Which of the following is NOT a reason for the need for sampling? A) It is always more informative...
#7 weekend before the final exam week. Her assistant took a random sample of 250 stadents...
#7
weekend before the final exam week. Her assistant took a random sample of 250 stadents The answer on "whether you visited campus bars on the weekend before the final exam week" from students in the sample is an example of A) a table of random numbers C) a categorical variable B) a continuous variable D) a discrete variable 3) 3) Which of the following is NOT a reason for the need for sampling? A) It is always more informative...
#5 weekend before the final exam week. Her assistant took a random sample of 250 stadents...
#5
weekend before the final exam week. Her assistant took a random sample of 250 stadents The answer on "whether you visited campus bars on the weekend before the final exam week from students in the sample is an example of A) a table of random numbers C) a categorical variable B) a continuous variable D) a discrete variable 3) 3) Which of the following is NOT a reason for the need for sampling? A) It is always more informative...
8. A random sample of 25 college males was obtained and each was asked to report...
8. A random sample of 25 college males was obtained and each was
asked to report their actual height and what they wished as their
ideal height. A 95% confidence interval for μd= average difference
between their ideal and actual heights was 0.8" to 2.2". Based on
this interval, which one of the null hypotheses below (versus a
two-sided alternative)can be rejected?
A. H0: μd= 0.5
B. H0: μd= 1.0
C. H0: μd= 1.5
D. H0: μd= 2.0
9. The...
A random sample of size n= 15 obtained from a population that is normally distributed results in a sample mean of 45.8 and sample standard deviation 12.2. An independent sample of size n = 20 obtained from a population that is normally distributed results in a sample mean of 51.9 and sample standard deviation 14.6. Does this constitute sufficient evidence to conclude that the population means differ at the a = 0.05 level of significance? Click here to view the...
#6
weekend before the final exam week. Her assistant took a random sample of 250 stadents The answer on "whether you visited campus bars on the weekend before the final exam week" from students in the sample is an example of A) a table of random numbers C) a categorical variable B) a continuous variable D) a discrete variable 3) 3) Which of the following is NOT a reason for the need for sampling? A) It is always more informative...
#7
weekend before the final exam week. Her assistant took a random sample of 250 stadents The answer on "whether you visited campus bars on the weekend before the final exam week" from students in the sample is an example of A) a table of random numbers C) a categorical variable B) a continuous variable D) a discrete variable 3) 3) Which of the following is NOT a reason for the need for sampling? A) It is always more informative...
#5
weekend before the final exam week. Her assistant took a random sample of 250 stadents The answer on "whether you visited campus bars on the weekend before the final exam week from students in the sample is an example of A) a table of random numbers C) a categorical variable B) a continuous variable D) a discrete variable 3) 3) Which of the following is NOT a reason for the need for sampling? A) It is always more informative...
8. A random sample of 25 college males was obtained and each was
asked to report their actual height and what they wished as their
ideal height. A 95% confidence interval for μd= average difference
between their ideal and actual heights was 0.8" to 2.2". Based on
this interval, which one of the null hypotheses below (versus a
two-sided alternative)can be rejected?
A. H0: μd= 0.5
B. H0: μd= 1.0
C. H0: μd= 1.5
D. H0: μd= 2.0
9. The...
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