Give sampling distribution using central limit theorem

Assignment Help Basic Statistics
Reference no: EM13133057

Suppose it is know from past research that the average cold lasts 5.7 days with a standard deviation of 2.3. A researcher takes an SRS of 50 children at an elementary school who had a cold this past winter and found out how long their cold symptoms lasted. Assuming that the Central Limit Theorem applies, give the sampling distribution of X for n = 50.

Reference no: EM13133057

Probability that she has never had an encounter with a ghost

If the person believes in ghosts, what is the probability that she has never had an encounter with a ghost?- What is the probability that the person believes in ghosts and has

Carefully interpret and explain given findings

For each of these workers, the income was known as well as the percentage of the work that was related to exportation. The regression slope estimate was 0.009, and the t-sta

Determine probability confidence intervals

An office manager wishes to estimate the mean time required to handle customer complaints. A sample of 38 complaints shows a mean time of 28.7 minutes with a standard deviat

State null hypothesis and choose an alternative hypothesis

Odometers measure automobile mileage. How close to the truth is the number that is registered?- State the null hypothesis, choose an alternative hypothesis, perform a t test,

Risk of investment among the two periods

Question 1. (Descriptive Statistics; 1 + 1 + 2 + 2 + 2 = 8 marks) Investment Returns: These data are the annual returns of 80 dividend stocks for the years 2005 and 2010. (i

Find critical value to set up decision rule to test claim

If the level of significance is 0.05, what is critical value to set up the decision rule to test the claim that the liberal arts students perform better than engineering stu

Award as being unreasonable compensation

A woman sued a computer keyboard manufacturer, charging that her repetitive stress injuries were caused by the keyboard. The injury awarded about $3.5 million for pain an

Bulbs from another nursery failed to bloom

In random samples, 46 of 400 tulip bulbs from one nursery failed to bloom and 18 of 200 tulip bulbs from another nursery failed to bloom. Use the χ2 statistic to test the nu


Write a Review

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