Calculate the condence interval

Assignment Help Basic Statistics
Reference no: EM13911604

You have ordered 10 bags of cement, which are supposed to weigh 94 kg each. The average weight of the 10 bags is 93.5 kg. Assuming that the 10 weights can be viewed as a realization of a random sample from a normal distribution with unknown parameters, construct a 95% confidence interval for the expected weight of a bag. The sample standard deviation of the 10 weights is 0.75.

Calculate the condence interval in R, and write the code you used.

Reference no: EM13911604

Questions Cloud

The plaintiffs annual salary for the last two years : You are serving on a jury. A plaintiff is suing the city for injuries sustained after a freak street sweeper accident. In the trial, doctors testified that it will be five years before the plaintiff is able to return to work. The jury has already dec..
Analyze the types of securities and financial markets : Analyze the types of securities and financial markets and propose a new type of market that would be better than anything in existence today. Please be as creative as you like.
The machine is expected to have a four year useful life : Porter, Inc., acquired a machine that cost $360,000 on October 1, 2013.
Find probability that at least fourty of randomly selected : Assuming that the company's claim is valid, use the normal approximation to the binomial to calculate the probability that at least 40 of the 250 randomly selected consumers would say that they would never shop at that store again if they were sub..
Calculate the condence interval : You have ordered 10 bags of cement, which are supposed to weigh 94 kg each. The average weight of the 10 bags is 93.5 kg. Calculate the condence interval in R, and write the code you used
Temperature of the water and aluminum : A 20.0 gram aluminum ball (specific heat 0.90 J g-1 °C-1) at 80 °C was placed in 50 grams of water initially at 22.9 °C. What is the final temperature of the water and aluminum assuming no heat was lost during the energy exchange.
Copper to form a precipitate : The chemist then initiates a reaction in the solution that causes all of the copper to form a precipitate (form a solid) that settles to the bottom of the container. What should be the mass (in grams) of the copper precipitate?
Dentify depreciation methods used moyle company : dentify depreciation methods used Moyle Co. acquired a machine on January 1, 2013, at a cost of $800,000. The machine is expected to have a five year useful life, with a salvage value of $50,000.
What is the probability that a yet-to-be-calculated : What is the probability that a yet-to-be-calculated 95% confidence interval with sample size n=50 will not cover the true population value of the mean (µ)

Reviews

Write a Review

Basic Statistics Questions & Answers

  Probability distribution of a random variable

The probability distribution of a random variable X is shown below, where X represents the amount of money (in $1,000s) gained or lost in a particular game of Blackjack.

  What is the standard error of sample mean

From an urn containing balls, a ball was drawn, weighted and replaced. This experiment was repeated 5 times. what is the standard error of sample mean?

  Population proportions are equal against two-tailed

Test at the .05 significance level the null hypothesis that the population proportions are equal against the two-tailed alternative.

  Hypothesis test to determine convincing evidence

Using a significance level of 0.03, carry out a hypothesis test to determine if there is convincing evidence to support the claim that fewer than half of adult Americans can name at least one justice currently serving on the Supreme Court.

  Using symbols state hypotheses for two-tailed test

Using symbols state hypotheses (H 0 and H 1 ) for two-tailed test. Sketch suitable distribution and locate critical region for a = 0.05.

  A researcher testing the effects of two treatments for

a researcher testing the effects of two treatments for anxiety computed a 95 confidence interval for the difference

  Twenty officers participating in the survey are randomly

a survey asks 1400 chief financial officers has the economy forced you to postpone or reduce the amount of vacation you

  Should you be concerned about the likelihood that it is

suppose you have some data gathered from a repeated experiment. if you want to make inferences about the data collected

  A frozen-food packer specifies the mean weight of a product

a frozen-food packer specifies the mean weight of a product as 200 g. the output is normally distributed with a

  Find probability of achieving exactly two successful calls

The random digit dialing machine is expected to reach a live person 15% of the time. In eight attempts, what is the probability of achieving exactly two successful calls?

  Value of the test statistic

Compute the value of the test statistic (to 2 decimals).

  Relationship of joggers and consumption of supplements

Study is conducted as to whether there is relationship between joggers and consumption of nutritional supplements.

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