User Account

All Pages

Confidence interval for the population mean

Assignment Help Basic Statistics
Reference no: EM132847996

Part 1

In order to set rates, an insurance company is trying to estimate the number of sick days that full time welders in an oilfield welding company take per year. A previous study indicated that the standard deviation was 8.2 days. How large a sample must be selected if the company wants to be 90% confident that the true mean differs from the sample mean by no more than 2 days?

Part 2

A random sample of 16 healthy adults over the age of 45 showed a mean systolic blood pressure of 129 mm Hg and a standard deviation of 11 mm Hg. Construct a 98% confidence interval for the population mean of systolic blood pressure. Assume that systolic blood pressure is approximately normally distributed.

Reference no: EM132847996

Questions Cloud

State the null and the alternate hypothesis : State the null and the alternate hypothesis for conducting one-way ANOVA for both Education and Occupation individually.
How did white supremacy and patriarchy influence historical : How did White supremacy and patriarchy influence the historical areas we have studied? Pick slavery and two (2) other areas to cover: policing
Derive an expression for escape velocity from earth : Derive an expression for escape velocity from earth, considering atmospheric drag force, following the Fdrag = -kv2 law where k is a constant
What type of technology does linux represent : What type of technology does Linux represent- continous, disruptive, or next generation? Explain what such a classification of type of technology would mean
Confidence interval for the population mean : Construct a 98% confidence interval for the population mean of systolic blood pressure. Assume that systolic blood pressure is approximately normally distribute
How does compare to other religious movements of the time : How is Peoples' Temple part of the religious cultural trend of the 1970s and how does it compare to other religious movements of the time?
Probability of a baby weighing between 3 and 4 kg : Babies born in singleton births in the U.S. have weights that are approximately normally distributed with mean 3.3 kg and standard deviation 0.6 kg.
Find time period of small oscillations : A sphere of mass density ?b, and radius R floats in a fluid, with a height H submerged in the fluid. Find time period of small oscillations
Standard deviation of the number of large cups : According to this information, what is the standard deviation of the number of large cups of coffee sold in a weekend?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Statistics-probability assignment

MATH1550H: Assignment:  Question:  A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..

  What is the least number

MATH1550H: Assignment:  Question:     what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?

  Determine the value of k

MATH1550H: Assignment:  Question:     Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form

  What is the probability

MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?

  Binomial distributions

MATH1550H: Assignment:  Questions:  Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.

  Caselet on mcdonald’s vs. burger king - waiting time

Caselet on McDonald’s vs. Burger King - Waiting time

  Generate descriptive statistics

Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.

  Sampling variability and standard error

Problems on Sampling Variability and Standard Error and Confidence Intervals

  Estimate the population mean

Estimate the population mean

  Conduct a marketing experiment

Conduct a marketing experiment in which students are to taste one of two different brands of soft drink

  Find out the probability

Find out the probability

  Linear programming models

LINEAR PROGRAMMING MODELS

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