Mean weekly family expenditure on clothes
Course:- Basic Statistics
Reference No.:- EM13104061

Expertsmind Rated 4.9 / 5 based on 47215 reviews.
Review Site
Assignment Help >> Basic Statistics

A statistician wants to estimate the mean weekly family expenditure on clothes. He believes that the standard deviation of the weekly expenditure is $125. Determine with 99% confidence the number of families that must be sampled to estimate the mean weekly family expenditure on clothes to within $15.

Put your comment

Ask Question & Get Answers from Experts
Browse some more (Basic Statistics) Materials
In an article entitled "Fuel Economy Calculations to Be Altered," James R. Healey indicated that the government planned to change how it calculates fuel economy for new cars
A test statistic is a value determined from sample information used to reject or not reject the null hypothesis.All hypothesis testing is based on accepting or rejecting the a
Discovering that 12 will return to summer school. Construct a 90% confidence interval estimate for the fraction of current spring students who will return to summer school.
The dimension is supposed to be 224 mm and the variance is unknown for the manufacturing process. Is there evidence that the mean dimension is not 221 mm? Assume the populat
A particle of mass is fired at an angle θ0 with a velocity in a liquid that develops a drag resistance F = -kv where is a constant. Determine the maximum or terminal speed
(a) Use the ANOVA approach to test the appropriate hypotheses. Use α = 0.05. (b) Test the appropriate hypothesis by using the two-sample t-test for comparing population means.
The company believes that the price elasticity for this product is about -2.5. If it decreases its price to $63, what should be the quantity sold? Will the revenue increase?
Compare to a surface emission aperture with the same width, but a length of 35 µm. Which one do you expect to have less divergence and what is the beam shape in each case?