Question

For a normal population with a mean equal to 83 and a standard deviation equal to...

For a normal population with a mean equal to 83 and a standard deviation equal to 13 ​, determine the probability of observing a sample mean of 89 or less from a sample of size 8 . Click here to view page 1 of the cumulative standardized normal table. LOADING... Click here to view page 2 of the cumulative standardized normal table. LOADING... Upper P left parenthesis x overbar less than or equals 89 right parenthesis

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

µ = 83

sd = 13

n = 8

                        

                         = P(Z < 1.31)

                         = 0.9049

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
If, in a sample of nequals16 selected from a normal​ population, Upper X overbar equals 60...
If, in a sample of nequals16 selected from a normal​ population, Upper X overbar equals 60 and Upper S equals 20​, what is your statistical decision if the level of​ significance, alpha​, is 0.01​, the null​ hypothesis, Upper H 0​, is mu equals 50 comma and the alternative​ hypothesis, Upper H 1 comma is mu not equals 50 question mark Click here to view page 1 of the table of the critical values of t. LOADING... Click here to view...
A random sample of n = 81 observations is drawn from a population with a mean...
A random sample of n = 81 observations is drawn from a population with a mean equal to 15 and a standard deviation equal to 9 . Complete parts a through g below. a. Give the mean and standard deviation of the? (repeated) sampling distribution x overbar . mu Subscript x overbar equalsnothingsigma Subscript x overbar equalsnothing ?(Type integers or? decimals.) b. Describe the shape of the sampling distribution of x overbar . Does this answer depend on the sample?...
The population mean and standard deviation are given below. Find the required probability and determine whether...
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 nequals=6464​, find the probability of a sample mean being less than 21.521.5 if muμequals=2222 and sigmaσequals=1.171.17. 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 nequals=6464​, the probability of a sample...
If Upper X overbar equals 92​, Upper S equals 10​, and n equals 25​, and assuming...
If Upper X overbar equals 92​, Upper S equals 10​, and n equals 25​, and assuming that the population is normally​ distributed, construct a 95 % confidence interval estimate of the population​ mean, mu. Click here to view page 1 of the table of critical values for the t distribution. LOADING... Click here to view page 2 of the table of critical values for the t distribution. LOADING... nothingless than or equalsmuless than or equals nothing ​(Round to two decimal...
Determine the area under the standard normal curve that lies between left parenthesis a right parenthesis...
Determine the area under the standard normal curve that lies between left parenthesis a right parenthesis Upper Z equals negative 0.43 and Upper Z equals 0.43​, ​(b) Upper Z equals negative 2.34 and Upper Z equals 0​, and​ (c) Upper Z equals negative 1.35 and Upper Z equals negative 0.88. LOADING... Click the icon to view a table of areas under the normal curve.
Suppose a simple random sample of size nequals36 is obtained from a population with mu equals...
Suppose a simple random sample of size nequals36 is obtained from a population with mu equals 82 and sigma equals 18. ​(a) Describe the sampling distribution of x overbar. ​(b) What is Upper P left parenthesis x overbar greater than 88 right parenthesis​? ​(c) What is Upper P left parenthesis x overbar less than or equals 76 right parenthesis​? ​(d) What is Upper P left parenthesis 78.1 less than x overbar less than 87.55 right parenthesis​?
Suppose a simple random sample of size nequals36 is obtained from a population that is skewed...
Suppose a simple random sample of size nequals36 is obtained from a population that is skewed right with mu equals 81 and sigma equals 6. ​(a) Describe the sampling distribution of x overbar. ​(b) What is Upper P left parenthesis x overbar greater than 82.1 right parenthesis​? ​(c) What is Upper P left parenthesis x overbar less than or equals 78.5 right parenthesis​? ​(d) What is Upper P left parenthesis 79.9 less than x overbar less than 82.65 right parenthesis​?...
Given a normal distribution with muμequals=105 and sigmaσequals=20, and given you select a sample of n...
Given a normal distribution with muμequals=105 and sigmaσequals=20, and given you select a sample of n equals 16n=16​, complete parts​ (a) through​ (d).Click here to view page 1 of the cumulative standardized normal distribution table. LOADING... Click here to view page 2 of the cumulative standardized normal distribution table. LOADING... a. What is the probability that Upper X overbarX is less than 9292​? ​P(Upper X overbarXless than<9292​)equals=. 0047.0047 ​(Type an integer or decimal rounded to four decimal places as​ needed.)...
Determine the total area under the standard normal curve for parts​ (a) through​ (c) below. For​...
Determine the total area under the standard normal curve for parts​ (a) through​ (c) below. For​ each, be sure to draw a standard normal curve and shade the area that is to be found. Click here to view the standard normal distribution table (page 1). LOADING... Click here to view the standard normal distribution table (page 2). LOADING... ​(a) Determine the total area under the standard normal curve to the left of zequals=negative 2−2 or to the right of zequals=22....
Construct a 95​% confidence interval to estimate the population proportion with a sample proportion equal to...
Construct a 95​% confidence interval to estimate the population proportion with a sample proportion equal to 0.60 and a sample size equal to 450. LOADING... Click the icon to view a portion of the Cumulative Probabilities for the Standard Normal Distribution table. A 95​% confidence interval estimates that the population proportion is between a lower limit of nothing and an upper limit of nothing.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT