The original population is extremely large and has u= -1357 and o=56. A simple random sample of n=81 is to be drawn. Let x be the mean. Find P( -1363<x<-1355).
Hint: u is population mean and o is standard deviation
The original population is extremely large and has u= -1357 and o=56. A simple random sample...
Fill in the blanks to correctly complete the sentence below. Suppose a simple random sample of size n is drawn from a large population with mean u and standard deviation o. The sampling distribution of x has mean u;= __ deviation = and standard Suppose a simple random sample of size n is drawn from a large population with mean u and standard deviation o. The sampling distribution of x has mean u; = | Vand standard deviation or
1- Suppose a simple random sample of sizen is drawn froma large population with mean u and standard deviation o. The sampling distribution of x has mean ug and standard deviation= 2- As the number of degrees of freedom in the t-distribution increase, the spread of the distribution 3- True or False: The value of to.10 with 5 degrees of freedom is greater than the value of to.10 with 10 degrees of freedom. 4- True or False: To construct a...
33. Sally draws a simple random sample from an original population. Sample size is n=41 and sample size mean=130, and the sample standard deviation is s=6. FInd the 99% confidence interval for the population mean "u".
A simple random sample of size n = 81 is obtained from a population with u = 87 and o = 36. (a) Describe the sampling distribution of x. (b) What is P (x > 94.2)? (c) What is P (xs 77.2) ? (d) What is P (82.4 <x< 95.8) ? (a) Choose the correct description of the shape of the sampling distribution of x. O A. The distribution is skewed left. OB. The distribution is uniform. O C. The...
A simple random sample of 81 observations was taken from a large population. The sample mean and the sample standard deviation were determined to be 165 and 225 respectively. The standard error of the mean is
A simple random sample of 64 observations was taken from a large population. The sample mean and the standard deviation were determined to be 70 and 12 respectively. The standard error of the mean is . . . (hint: enter the answer with one decimal place)
5. A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x is found to be 108, and the standard deviation, s, is found to be 10. a. Find the degrees of freedom about u if the sample size, n, is 23. b. Construct a 95% confidence interval about u if the sample size, n is 27. brud on C. How does increasing the sample size affect the margin of error,...
76 and o= 18 A simple random sample of size n = 81 is obtained from a population with u (a) Describe the sampling distribution of x. (b) What is P (x> 79.7)? (c) What is P (xs71)? (d) What is P (73.7<x<79.3)? (a) Choose the correct description of the shape of the sampling distribution of x OA. The distribution is skewed right. B. The distribution is approximately normal. OC. The distribution is uniform. OD. The distribution is skewed left...
A simple random sample of size n = 81 is obtained from a population with u = 70 and o = 27. (a) Describe the sampling distribution of x. (b) What is P (X>73)? (c) What is P (7562.5) ? (d) What is P (67.9<x< 75.25)?
A simple random sample of size n 49 is obtained from a population with u 75 and o 14 (a) Describe the sampling distribution of x. (b) What is P (x>77.2)? (c) What is P (xs 71)? (d) What is P (73.8 < x<80)? (a) Choose the correct description of the shape of the sampling distribution of x. O A. The distribution is skewed right. B. The distribution is approximately normal. OC. The distribution is skewed left O D. The...