Statistics question, Basic Statistics

Assignment Help:
1. A sample from 16 different farms across Quebec shows that the hay production in bales per acre is normally distributed N(100,50).
a. (2p )What is the probability that a random farm from this sample produces less than 80 bales/acre?



b. (2p) What is the probability that another random sample of nine farms has an average of less than 80 bales/acre?



c. (1p) Is the population mean known?



d. (2p) What can we learn from the central limit theorem in this case?



e. (3p) Calculate a 90 % confidence interval around the population mean.




f. (2p) Interpret: what does your answer in e) mean?


g. (2p) These nine farms were actually a pilot study. What is the minimal sample size needed to compute a 95 % confidence interval around the population mean?



Related Discussions:- Statistics question

Statistic, difference between histogram and historigram

difference between histogram and historigram

Simple random sample, A simple random sample of n = 300 full-time workers i...

A simple random sample of n = 300 full-time workers is selected from a company list containing the names of all n = 5000 full-time workers in order to evaluate job satisfaction. Gi

Binomial expansion, what is the largest coefficient of (1+3x)^4 is ?

what is the largest coefficient of (1+3x)^4 is ?

Transitioning from gaap to ifrs, How important do you think knowledge trans...

How important do you think knowledge transfer and training will be to help in transitioning from GAAP to IFRS? Manager 1: Knowledge transfer is going to be extremely importan

Probability, 1) A certain brand of batteries has a lifetime that has a norm...

1) A certain brand of batteries has a lifetime that has a normal distribution with a mean of 3,800 hours and a standard deviation of 390 hours. b) What lifetime should the manufac

Volume, I have a box that measures 3m x 3m x 3m. What is the volume of the...

I have a box that measures 3m x 3m x 3m. What is the volume of the cube?

TRENDS , Why do we particularly omit the middle year when using the semi-av...

Why do we particularly omit the middle year when using the semi-average method to fit a trend line

Full and restricted models - testing research hypotheses, 1. Suppose you ar...

1. Suppose you are given a dataset that consists of a random sample of tasters, on which the following variables were obtained: (y) Zpref = taste preference for green beans stor

Help with homework, 1. Penny Pincher, Inc. had a contribution margin of $33...

1. Penny Pincher, Inc. had a contribution margin of $33,000 on sales of $50,000 and had fixed costs of $18,000. Calculate its break-even point in sales dollars. 2. Krueger Company

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd