Find mean and standard deviation for sampling distribution

Assignment Help Basic Statistics
Reference no: EM13128422

Business Week surveyed MBA alumni 10 years after graduation to ?nd out how much they spend eating out per week. You are asked to conduct a follow-up study by taking a sample of 40 of these MBA alumni. Assume the population standard deviation is $35.

a. Are the assumptions for the sampling distribution of x to be normally distributed satis?ed? Explain.
b. If the population mean for how much alumni spend is $115.50 per week eating out socially, what is the mean and standard deviation for the sampling distribution of x?
c. What is the probability the sample mean will be within $10 of the population mean?

Reference no: EM13128422

Questions Cloud

Determine if particular overbooking strategy is sound : You have been retained as a consultant to SarParKingsGraUsch. Your job is to determine if this particular overbooking strategy is sound. Use simulation methods to perform your analysis.
Increase in height of sand pile with volume : At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 10 cubic feet per minute. The diameter of the base of the cone is approximately 3x the altitude.
How many grams of iron are formed : How many grams of iron are formed when 275 grams of carbon monoxide react with excess Fe2O3
Trial balance prepared by an inexperienced accountant : A trial balance prepared by an inexperienced accountant showed total debits of $540,000 and total credits of $450,000. This discrepancy is most likely due to which type of error?
Find mean and standard deviation for sampling distribution : If the population mean for how much alumni spend is $115.50 per week eating out socially, what is the mean and standard deviation for the sampling distribution of x?
Differentiation and related rates : A baseball diamond has the shape of a square with sides 90 feet long. A player running from second base to third base at a speed of 28 feet per second is 30 feet from third base.
Provide the fund level entries in general journal : The Central Stores Fund of Cook City provides centralized management of purchasing, storage, and issue of supplies for the entire City. For the following summarized transactions and events for the year ended June 30, provide the fund level entries..
How many grams of n2h4 will be consumed : Consider the hydrazinenitrogen tetroxide rocket fuel reaction:  2N2H4 + N2O4 3N2 + 4H2O How many grams of N2H4 will be consumed by 46 g of N2O4?
Rate of change of length of shadow : A man 6 feet tall walks at a rate of 5 feet per second away from a light that is 15 feet above ground . When he is 10 feet from the base of the light,

Reviews

Write a Review

Basic Statistics Questions & Answers

  Participation in a randomized clinical trail

The data is based on 214 children with acute otitis media who participated in a randomized clinical trail each child had OME at the beginning of the study in either one or both ears and was randomly assigned to receive a 14 day course of one of tw..

  Performance on spatial skills task

For the following data, determine whether or not right-hemisphere damage results in significantly reduced performance on the spatial skills task. Test with alpha set at .05 with one tail. The data are as follows:

  Compute sample statistic

Use Hypothesis testing to determine if Dr. Boom is correct, that his sample of 25 rockets weight less than the average rocket.

  Probability that a randomly selected monthly cell phone

What is the probability that a randomly selected monthly cell phone bill is more than $100?

  Hypothesis testing of problem solving inventory

The Problem Solving Inventory (PSI) has a normal distribution with mean = 90 and standard deviation = 15. A researcher suspects that the mean for female students is higher than 90.

  Determine which of the two mutual funds is better

Perform the necessary calculations to determine which of the two mutual funds is better. Which one should you choose to maximize the expected value?

  Fault tree problem-calculating probabilities

Assume the probability of a tire blowout is 0.178% per 50,000 miles of use and that a person travels 15,000 miles per year in a car.

  Hypotheses of this scenario of the restuarant franchises

Do sit down restuarant franchises and fast food franchises differ significantly in stock price? Specifically, is the average stock price for sit-down restaurants different from the average stock price for fast food restaurants?

  What does the law of large numbers tell if gambler wins

What does the law of large numbers tell us about what will happen if a gambler makes very many bets on red? If the gambler keeps on playing forever he must win.

  Following of the normal distribution

The number of passengers on the Carnival Sensation during one-week cruises in the Caribbean follows the normal distribution.

  Computing confidence interval for mean

The standard deviation of test scores on a certain achievement test is 11.4. A random sample of 100 scores on this test had a mean of 71.2. Based on this sample, find a 90% confidence interval for the true mean of all scores. Complete the below:

  Aggregate demand and aggregate supply analysis

In the boom years of the late 1990s, it was often said that rapidly increasing stock prices were responsible for much of the rapid growth of real GDP. Explain how this could be true, using aggregate demand and aggregate supply analysis

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