Solution-Test the hypothesis that the population mean age

Test the hypothesis that the population mean age

Assignment Help Basic Statistics

Reference no: EM132363846

Question example:

1. A simple random sample of 80 customers is taken from a customer information file and the average age is 34. The population standard deviation σ is unknown. Instead the sample standard deviation s is also calculated from the sample and is found to be 5.5.

a. Test the hypothesis that the population mean age is greater than 30 using the critical value approach and a 0.05 level of significance.

i. H₀= µ= 30, H₁= µ> 30

ii. 34-30/5.5/square root of 80 = 6.5049

iii. cv= 1.664 <--- what does this number mean??

iv. H₀is rejected. The mean age is greater than 30. <--- do we reject this because the cv is great than 0.05?

Reference no: EM132363846

Questions Cloud

Approximate the probability that more than 40 weigh : Approximate the probability that more than 40 weigh more than 20 pounds.

Compute the 98% confidence interval : Compute the 98% confidence interval for ß1 (the population slope). Interpret this interval.

Draw a scatter diagram of the data : Draw a scatter diagram of the data from part (a), treating the Zestimate as the explanatory variable. Comment on the association between the Zestimate

Difference in how well shoe size predicts height : Do you think that organizing the data by gender would make a difference in how well shoe size predicts height?

Test the hypothesis that the population mean age : Test the hypothesis that the population mean age is greater than 30 using the critical value approach and a 0.05 level of significance.

How many faces does the map have if it is drawn on a sphere : SGTA Exercises - Predicate logic, proofs, trees, planar graphs. How many faces does the map have if it is drawn on a sphere

First card dealt off the top of a deck of cards : Find the probability that the first card dealt off the top of a deck of cards is a diamond or a 5.

Standardizing falls for comparison purposes : Since the number of patients per night may fluctuate and the type of patient may be different from day to day, how may you consider standardizing falls

Secure lab to check the total bio-carbon ratio : With climate change on the rise, reduction in CO2 has been demonstrated by using renewable resources and fossil fuel. Random samples of 46 blended

User Account

All Pages

Test the hypothesis that the population mean age

Reference no: EM132363846

Reference no: EM132363846

Questions Cloud

Reviews

Write a Review

Basic Statistics Questions & Answers

Statistics-probability assignment

What is the least number

Determine the value of k

What is the probability

Binomial distributions

Caselet on mcdonald’s vs. burger king - waiting time

Generate descriptive statistics

Sampling variability and standard error

Estimate the population mean

Conduct a marketing experiment

Find out the probability

Linear programming models

Assured A++ Grade

Academics

Major Subjects

Majors

Get In Touch

TERMS & POLICIES

HELP & SUPPORT