Obtained a random sample from a population

Assignment Help Basic Statistics

Reference no: EM131087366

a. Having obtained a random sample from a population, you wish to use a chi-squared test to decide whether the population distribution is standard normal. If you base the test on six class intervals having equal probability under H0, what should be the class intervals?

b. If you wish to use a chi-squared test to test H0: the population distribution is normal with µ= .5, σ = .002 and the test is to be based on six equiprobable (under H0) class intervals, what should be these intervals?

c. Use the chi-squared test with the intervals of part (b) to decide, based on the following 45 bolt diameters, whether bolt diameter is a normally distributed variable with µ = .5 in., σ = .002 in.

Reference no: EM131087366

Questions Cloud

Collaborating with other organizations : In a study of 368 San Francisco Bay Area nonprofits, 224 reported that they are collaborating with other organizations to provide services, a necessity as nonprofit agencies are called upon to do more with less.

Population standard deviation : If the manager of a paint supply store wants to estimate, with 95% confidence, the mean life of light bulbs to within +/-20 hours and also assumes that the population standard deviation is 100 hours, how many light bulbs need to be selected?

Describe how they solve the problem : Describe how they solve the problem.

Confidence interval estimate for population proportion : Construct a 95% confidence interval estimate for the population proportion of social media users who would say it is not okay to friend their boss. Write a short summary of the information derived from (a) and (b).

Obtained a random sample from a population : a. Having obtained a random sample from a population, you wish to use a chi-squared test to decide whether the population distribution is standard normal. If you base the test on six class intervals having equal probability under H0, what should b..

Confidence interval estimate for mean value : Assuming a normal distribution construct a 95% confidence interval estimate for the mean value of all greeting cards in the store's inventory. Suppose there are 2,500 greeting cards in the store's inventory. How are the results in (a) useful in as..

Calculate the joint probability density : Fix i and let Y1, . . . , Yn-1 be the order statistics of X1, . . . , Xi-1, Xi+1, . . . , Xn. Calculate the joint probability density of (Xi, Y1) at a point (x, x), conditional on V = 1. Calculate the joint probability density of (Xi, Y1) at a point ..

How this problem can be addressed by local detection : Discuss how this problem can be addressed by local detection and correction of failures [4, 16].

How one begin to define concepts such as health and disease : Given the narrative of creation, fall, redemption, and restoration, how would one begin to define concepts such as health and disease? Do you think that health ought to be this broadly defined?

User Account

All Pages