User Account

All Pages

Population standard deviation

Assignment Help Basic Statistics
Reference no: EM131726048

A book about college reports that the mean time students study each week is 1015 minutes. A dean says she believes the mean is greater than 1015 minutes. Suppose she takes a random sample of 64 students and finds that the sample mean is 1050 minutes. Assume the population standard deviation is 150 minutes. Test the deans claim at α 0.05 .

Reference no: EM131726048

Questions Cloud

Explain how to solve a homework problem : Jan is a member of a class with 20 students that meets daily. Each day for a week (Monday to Friday), a student in Jan's class is randomly selected to explain.
Explain understanding scope of transatlantic slave trade : Understanding the size and scope of the transatlantic slave trade is important fora complete appreciation of the development of the institution of slavery.
Normal with equal variances : Assume that the samples are independent simple random samples and that both populations are approximately normal with equal variances.
Explain how can determine the probabilities : Find information on a random circumstance in the news. Identify the circumstance and possible outcomes, and assign probabilities to the outcomes.
Population standard deviation : Assume the population standard deviation is 150 minutes. Test the deans claim at a 0.05.
Identify the random circumstances in the given story : It was Robin's birthday and she knew she was going to have a good day. She was driving to work, and when she turned on the radio, her favorite song was playing.
Regression model using all of the independent variables : A business statistics professor would like to develop a regression model to predict the final exam scores for students based on their current? GPAs
What is the probability that household will be selected : Suppose that you live in a city that has 125,000 households with telephones and a polling organization randomly selects 1000 of them to phone for a survey.
Write a paper about unemployment and the great depression : Write a paper about Unemployment and the Great Depression. Numerous specific examples demonstrate detailed knowledge of relevant history.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Point effect large enough to statistically significant

If the population standard deviation is σ = 20 is the 6 point effect large enough to be statistically significant? Use the two - tailed test with α = .05

  Without using the formula or calculating any numerical

lets say a publisher makes one typo per 1000 pages. without using the formula or calculating any numerical answers

  Probability that a batch will be acceptable to the consumer

What is the probability that a batch will be acceptable to the consumer? Is the probability large enough to be an acceptable level of performance?

  Suppose we draw two tickets from a hat that contains

suppose we draw two tickets from a hat that contains tickets numbered 1234. let x be the 1st number drawn and y be the

  Explain how the applications of integer programming differ

explain how the applications of integer programming differ from those of linear programming. why is rounding-down an lp

  If z is a standard normal random variable then what is

if z is a standard normal random variable then what is pr-2.61 lt z lt 0.23? use four decimal places of

  Distribution of box weights

A popular snack is packed by machine into 9-ounce boxes. The distribution of box weights is normally distributed with a mean of 9 ounces and a variance of 0.01 ounces. What is the probability of randomly selecting a box containing less than 8.9 ou..

  Correlation coefficient pearson correlation

Which correlation coefficient Pearson's correlation or spearman rank correlation is the best describe the relationship between the two variables?

  Constant-pressure specific of the steam

The constant-pressure specific of the steam is 0.452 kcal kg-1 K-1. Other data are available in Tables 1.2 and 5.1.

  What is the expected value to take insurance what is the

suppose that a car rental agency offers insurance for a week that will cost 10 per day. a minor fender bender will cost

  At the conclusion of the selection process what is the

1. one box contains six red balls and four green balls and a second box contains seven red balls and three green balls.

  A rancher runs a closed herd of breedin cattlehe keeps and

a rancher runs a closed herd of breedin cattle.he keeps and breeds the top 3of bull calves based on individual

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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