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the answer is option C
The distribution is the sampling distribution of X.
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Suppose you're in a class of 25 students. The instructor takes a simple random sample of...
A statistics class has 26 students. The instructor would like to select a random sample of...
A statistics class has 26 students. The instructor would like to select a random sample of 3 students to work together on a group project. a. How many different samples are possible? b. If 13 of the 26 students in class are freshmen, what is the probability that all 3 of the selected students are freshmen? Help please
Suppose that n students are selected at random without replacement from a class containing 28 students,...
Suppose that n students are selected at random without replacement from a class containing 28 students, of whom 8 are boys and 20 are girls. We assume that 0 < n < 28. Let X denote the number of boys that are obtained. Answer the following questions: a (4 marks) State the distribution of X, with parameters b (1 mark) Write down the possible values of X c (1 mark) Express E(X) in terms of n. d (4 marks) For...
A statistics instructor wants to obtain a Simple random sample (SRS) of five students from her...
A statistics instructor wants to obtain a Simple random sample (SRS) of five students from her class of 35 students. She assigns each student a number from 1 to 35 based on a sheet which lists the students alphabetically, by last name. For each scenario, say if it's really an SRS and how you can tell that it is or is not: a. The instructor puts pieces of paper numbered 1-35 in a bowl and closes her eyes and selects...
Suppose that X~N(5000,400). You're considering taking a simple random sample and calculating the average of your...
Suppose that X~N(5000,400). You're considering taking a simple random sample and calculating the average of your sample. The Central Limit Theorem tells us that the distribution of all possible sample averages is Normally distributed with a mean of 5000. If you took a sample of size n = 10000, what is the standard deviation of that sample?
1.You plan to randomly select 10 students from your campus and ask them how many minutes...
1.You plan to randomly select 10 students from your campus and ask them how many minutes they exercised in the past seven days. The distribution of values taken by the average exercising time in all possible samples of size 10 is the (a) probability distribution of exercising times. (b) sampling distribution of average exercising times. (c) variance of the exercising time values. (d) population parameter. 2. The sampling distribution of a statistic is a. the probability that we obtain the...
Let's say you want to poll a random sample of 150 students on campus to see...
Let's say you want to poll a random sample of 150 students on campus to see if they prefer to take online classes. Of course, if you took an actual poll you would only get one number (your sample proportion, p-hat). Imagine all the possible samples of 150 students that you could draw and the distribution of all the possible sample proportions you would get from them. If I told you that we know that 35% of all students actually...
suppose a simple random sample size n=49 Suppose a simple random sample of size n= 49...
suppose a simple random sample size n=49
Suppose a simple random sample of size n= 49 is obtained from a population with u = 82 and o = 28. (a) Describe the sampling distribution of x. (b) What is P (X> 86.2)? (c) What is P (572) (d) What is P (76<x< 88.6)? Click here to view the standard normal distribution table page) Click here to view the standard normal distribution table (page 2). (a) Choose the correct description of...
Question 11-In a large statistics class. PM 100% of all students are male and the rest are female...
Question 11-In a large statistics class. PM 100% of all students are male and the rest are female. The heights of all male students follow a normal distribution with mean Ax and standard deviation σΜ. The heights of all female students follow a normal distribution with mean Mr and standard deviation σ Suppose a random sample of n students is selected independently. Let H be the mean height of these n randomly selected students. a. Determine E[H) and Va[FI /...
A simple random sample of 40 students is taken at a community college. Of those, 25...
A simple random sample of 40 students is taken at a community college. Of those, 25 are females. Use the proportion of females in the sample to construct a 95% confidence interval for the proportion of females enrolled on the campus (the population). Round your boundaries to two decimal places (for example(0.25, 0.35)).
Problem 2 (20pts) The mean balance that college students owe on their credit card is $1096...
Problem 2 (20pts) The mean balance that college students owe on their credit card is $1096 with a standard deviation of $350. If all possible random samples of size 144 are taken from this population, determine the following: a) name of the Sampling Distribution b) mean and standard error of the sampling distribution of the mean (use the correct name and symbol for each) c) percent of sample means for a sample of 144 college students that is greater than...
Suppose that n students are selected at random without replacement from a class containing 28 students, of whom 8 are boys and 20 are girls. We assume that 0 < n < 28. Let X denote the number of boys that are obtained. Answer the following questions: a (4 marks) State the distribution of X, with parameters b (1 mark) Write down the possible values of X c (1 mark) Express E(X) in terms of n. d (4 marks) For...
A statistics instructor wants to obtain a Simple random sample (SRS) of five students from her class of 35 students. She assigns each student a number from 1 to 35 based on a sheet which lists the students alphabetically, by last name. For each scenario, say if it's really an SRS and how you can tell that it is or is not: a. The instructor puts pieces of paper numbered 1-35 in a bowl and closes her eyes and selects...
suppose a simple random sample size n=49
Suppose a simple random sample of size n= 49 is obtained from a population with u = 82 and o = 28. (a) Describe the sampling distribution of x. (b) What is P (X> 86.2)? (c) What is P (572) (d) What is P (76<x< 88.6)? Click here to view the standard normal distribution table page) Click here to view the standard normal distribution table (page 2). (a) Choose the correct description of...
Question 11-In a large statistics class. PM 100% of all students are male and the rest are female. The heights of all male students follow a normal distribution with mean Ax and standard deviation σΜ. The heights of all female students follow a normal distribution with mean Mr and standard deviation σ Suppose a random sample of n students is selected independently. Let H be the mean height of these n randomly selected students. a. Determine E[H) and Va[FI /...
Problem 2 (20pts) The mean balance that college students owe on their credit card is $1096 with a standard deviation of $350. If all possible random samples of size 144 are taken from this population, determine the following: a) name of the Sampling Distribution b) mean and standard error of the sampling distribution of the mean (use the correct name and symbol for each) c) percent of sample means for a sample of 144 college students that is greater than...
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