Margin of error for the confidence interval

Assignment Help Basic Statistics
Reference no: EM1390322

Data collected by a child development scientist produced a 95% confidence interval for the mean age, μ (in weeks) at which babies began to craw as [21.4, 31.6]

a) what is the sample mean.

b) what is the margin of error for the confidence interval.

Reference no: EM1390322

Questions Cloud

Stem-and-leaf diagram : The data below show the average daily high temperature for Chicago, Illinois, for twelve recent spring and summer months. Construct a stem-and-leaf diagram for the data:
Distributed random variable with a mean : The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 370 grams and a standard deviation of 15 grams. Find the weight that corresponds to each event:
Due to scheduled maintenance of their equipment : A fleet repair facility has the capacity to repair 900 trucks per month. However, due to scheduled maintenance of their equipment, management feels that they can repair no more than 600 trucks per month.
What benefits would bill get for his business from implement : What benefits would Bill get for his business from implementing a relational database? Your response must be tied directly to Bill†TM s shoe stores.
Margin of error for the confidence interval : Data collected by a child development scientist produced a 95% confidence interval for the mean age, μ (in weeks) at which babies began to craw as [21.4, 31.6]
Multiple choice questions - basic genetics : A population is reproductively isolated. Determine which of the following is primarily responsible for the introduction of new alleles at genetic loci into the population?
The local convenience store makes personal pan pizzas : The local convenience store makes personal pan pizzas. Currently, their process makes complete pizzas, fully cooked, for the customer. This process has a fixed cost of $20,000,
The express was established as the town newspaper : The Express was established as the town newspaper after the first year of operations. The daily demand remained at 500, the standard deviation of daily demand at 10.0 Armentrout retailed at $1 newspapers purchased
Role of carnitine in atp production : A deficiency of carnitine results in muscle cramps, which are increased through exercise or fasting. ATP is required for muscle contraction.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Contingency table problem

If one person is selected at random, what is the probability that person is Female?

  Null hypothesis and alternative hypothesis of plant

The mean height of a certain plant is 160 centimeters. Suppose a botanist wants to carry out a hypothesis test to see if the mean height when these plants are treated with a certain chemical differs from 160. What is the null hypothesis and the al..

  States of nature of this decision-making problem

The company can either settle out of court for $250,000 or go to court. If the company goes to court and loses, it must pay $825,000 plus $175,000 in court costs. If it wins in court the plaintiffs pay the court costs. Identify the states of natur..

  Predict quarterly turnover by incorporating seasonal effects

By using this data and incorporating seasonal effects, predict quarterly turnover for 2010.

  Normality assumption to build confidence interval

What is the best prediction for the number of products sold based on advertising costs of $7000?

  Interpreting the meaning of p-value

At 0.01 level of significance, is there evidence that mean price is higher at Whole Foods Market than at Fairyway supermarket? Interpret the meaning of p-value in (i).

  Xbar distribution of sample means

If random sample of size n = 16 are selected, can we say anything about the xbar distribution of sample means?

  Finding probabailty that none of the antennas is defective

Assume 1.5% of antennas on new Nokia cell phones are imperfect. For random sample of 200 antennas, determine the probability that: None of the antennas is defective.

  Probability of success in basketball player shoots

A basketball player shoots 8 free throws during a game. If we assume that each attempt has the same probability of success, the sample space for the number of baskets he/she makes during the game is ??

  Reasonable guideline-significance level

At the .05 significance level, can we conclude that the guideline is still reasonable?

  Sample to achieve this level of accuracy and confidence

How many individuals will it need to sample to achieve this level of accuracy and confidence?

  Evaluate the sum of the ranks for additive

One characteristic of billiard balls is their elasticity - the bounce they get when striking one another. A manufacturer of billiard balls is testing three additives to the basic plastic.

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