Answer:
Population mean μ = 21 and a standard deviation σ = 1.22
We want to find the probability of a sample mean being less than 21.2
P(xbar < 21.2) = P((xbar - µ)/ (σ/√n)) < (21.2– 21)/ (1.22/sqrt(64))
= P( Z < 1.31)
= 0.9049 (Using Statistical table)
The probability is 0.9049
The given sample mean being less than 21.2 would be considered unusual because it has less than 90% probability.
The mean and standard deviation are given below. Find the required probability and determine whether the...
The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample of n 69, find the probability of a sample mean being less than 25.1 if u 25 and o 1.34 囲Click the icon to view page 1 of the standard normal table. 囲Click the icon to view page 2 of the standard normal table. For a sample of n-69, the probability of a...
The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual For a sample of n=62, find the probability of a sample mean being less than 22.2 it-22 and 1.24 Click the icon to view page 1 of the standard normal table. EIB Click the icon to view page 2 of the standard normal table 124 is For a sample of n=62, the probability of a sample...
The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample of n equals 66, find the probability of a sample mean being less than 20.6 if mu equals 21 and sigma equals 1.16. LOADING... Click the icon to view page 1 of the standard normal table. LOADING... Click the icon to view page 2 of the standard normal table. For a sample of...
5.4.15 Question Help The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample of n = 68, find the probability of a sample mean being less than 22.1 if u = 22 and o=1.31. Click the icon to view page 1 of the standard normal table. Click the icon to view page 2 of the standard normal table. For a sample of n...
the population mean and standard deviation are given below. find the required probability and determine Test: Chapter 5 TEST 03:00:00 This Test: 21 pts possible The population mean and standard deviation are given below Find the required probability and oemine whether the given sample mean would be considered unusual For a sample of n 60,nd the probability of a sample mean being less than 23.6fp -24 and 1.16 l Cick the ioon to view page 1 of the standard normal...
The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample of =64 , find the probability of a sample mean being less than 22.2 if u=22 and =1.27. For a sample of =64, the probability of a sample mean being less than 22.2 if μ=22 and σ=1.27 is ____(Round to four decimal places as needed.) Would the given sample mean be considered unusual?...
3 vuCun. Pu von Complee) 15 Tesl. I pes p... The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample of n = 68, find the probability of a sample mean being less than 21.2 if u = 21 and o = 1.16. B B Click the icon to view page 1 of the standard normal table. Click the icon to view page...
The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample of n=64, find the probability of a sample mean being less than 24.5 if mμ=25 and σ=1.31
The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample of n=6565, find the probability of a sample mean being greater than 219 if muμequals=218 and sigmaσequals=5.8 For a sample of n=65, the probability of a sample mean being greater than 219 if μ=218 and sigmaσequals=5.8 is?
The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual For a sample of a 70 find the probably of a sample mean being greater than 213 2 12 and 5.9 For a sample 70, the probability of a sample mean being greater than 213 Pound to four decimal places as needed) 212 and 595 Would the given Sample mean be considered unusual? The sample mean...