12 men from Pinellas County were randomly drawn from a population of 100,000 men and weighed....

12 men from Pinellas County were randomly drawn from a population of 100,000 men and weighed. The average weight of a man from the sample was found to be 150 pounds with a standard deviation of 56 pounds, find the 90% confidence interval for the true mean weight of men. Answer the following

What is the sample mean value? [ Select ] ["206", "94", "56", "150"]

Which distribution is used in this case? [ Select ] ["t", "Not Sure", "Both", "z"]

What is the Maximal Margin of Error? [ Select ] ["32.307", "29.03", "35.82", "8.375"]

What is the confidence interval? [ Select ] ["(117.693,182.307)", "(114.175,185.825)", "(141.625,158.375)", "(120.968,179.032)"]

Expert Solution

thankn you.

orchestra answered 1 year ago

The following data were randomly drawn from an approximately normal population. 37, 40, 43, 45, 49...

The following data were randomly drawn from an approximately normal population. 37, 40, 43, 45, 49 Based on these data, find a 95% confidence interval for the population standard deviation. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your answers to at least two decimal places. What is the lower limit of the 95% confidence interval? What is the upper limit of the 95% confidence interval?

The following eight observations were drawn from a normal population whose variance is 100: 12 8...

The following eight observations were drawn from a normal population whose variance is 100: 12 8 22 15 30 6 29 58 Part A What is the standard error of the sample mean, based on the known population variance? Give your answer to two decimal places in the form x.xx Standard error: Part B Find the lower and upper limits of a 90% confidence interval for the population mean. Give your answer to two decimal places in the form xx.xx...

Suppose samples of size 100 are drawn randomly from a population of size 1000 and the...

Suppose samples of size 100 are drawn randomly from a population of size 1000 and the population has a mean of 20 and a standard deviation of 5. What is the probability of observing a sample mean equal to or greater than 21?

a) If random samples of size 12 are drawn from a population with mean 7 and...

a) If random samples of size 12 are drawn from a population with mean 7 and standard deviation 2 , find the standard error of the distribution of sample means. b) Assume the sample is a random sample from a distribution that is reasonably normally distributed and we are doing inference for a sample mean. Find endpoints of a t-distribution with 0.025 beyond them in each tail if the sample has size n=26. c) Assume the sample is a random...

1. The following 10 numbers were drawn from a population. Is it likely that these numbers...

1. The following 10 numbers were drawn from a population. Is it likely that these numbers came from a population with a mean of 13? Evaluate with a two-tailed test at p < .05. 5, 7, 7, 10, 10, 10, 11, 12, 12, 13 a. State both in words, and then symbolically what your H1 and H0 would be. b. What is your df? What is your critical t? c. Calculate t d. Based on the above information, would you...

We have weighed 8 randomly selected cinnamon buns from a pastry shop. The weights were according...

We have weighed 8 randomly selected cinnamon buns from a pastry shop. The weights were according to following (unit grams) 111, 85, 109, 124, 113, 127, 88, 101 (a) Calculate a 95% confidence interval for the average weight for all cinnamon buns at this pastry shop. Specify the conditions to be met. (b) Enter the margin of error for the interval from the (a) task. We plan to do that about the investigation at another patisserie. What can we do...

A) Assume that 12 jurors are randomly selected from a population in which 87% of the...

A) Assume that 12 jurors are randomly selected from a population in which 87% of the people are Mexican-Americans. Refer to the probability distribution table below and find the indicated probabilities. xx P(x)P(x) 0 0+ 1 0+ 2 0+ 3 0+ 4 0+ 5 0.0002 6 0.0019 7 0.0111 8 0.0464 9 0.138 10 0.2771 11 0.3372 12 0.188 Find the probability of exactly 5 Mexican-Americans among 12 jurors. P(x=5)=P(x=5)= Find the probability of 5 or fewer Mexican-Americans among 12...

A sample of 12 of bags of Calbie Chips were weighed (to the nearest gram), and...

A sample of 12 of bags of Calbie Chips were weighed (to the nearest gram), and listed here as follows. 219, 226, 217, 224, 223, 216, 221, 228, 215, 229, 225, 229 Find a 95% confidence interval for the mean mass of bags of Calbie Chips. Find a 95% confidence interval for the mean mass of bags of Calbie Chips (b) Professor GeniusAtCalculus has two lecture sections (A and B) of the same 4th year Advanced Calculus (AMA 4301) course...

(a) A sample of 12 of bags of Calbie Chips were weighed (to the nearest gram),...

(a) A sample of 12 of bags of Calbie Chips were weighed (to the nearest gram), and listed here as follows. [9 marks] 219, 226, 217, 224, 223, 216, 221, 228, 215, 229, 225, 229 Find a 95% confidence interval for the mean mass of bags of Calbie Chips. (b) Professor GeniusAtCalculus has two lecture sections (A and B) of the same 4th year Advanced Calculus (AMA 4301) course in Semester 2. She wants to investigate whether section A students...

9. The heights of a population of 100,000 men are normally distributed with a mean of...

9. The heights of a population of 100,000 men are normally distributed with a mean of 68 inches and standard deviation of 3. About how many men have heights (a) below 64 inches? (b) above 74 inches? (c) between 62 and 74 inches? 10. Assume that the scores on the Graduate Record Exam (GRE) are normally distributed with a mean of 500 and a standard deviation of 115. (a) Find the percentage of students who scored at least 600. (b)...

Question