Information about business economics

Reference no: EM13113400

Studies from a local mall show the typical shopper spends 0.75 hrs shopping. the standard deviation is 0.10 hours. A sample of 45 shoppers revealed the mean time spent increased to .080.

Develop a hypothgesis to determine the mean time spent is more than 0.75 hrs using the .05 significance level.

Supose the mean shopping time actually increced from 0.75 hrs to 0.77 hrs. What is the probability this increase would not be detected?

Reference no: EM13113400

Questions Cloud

What is the vapor pressure of this solution at 30 degrees : A solution is prepared by dissolving 396g of sucrose (C2H22011) in 624g of water. What is the vapor pressure of this solution at 30 degrees.

Information about statistics problem : An experiment is designed to test the effectiveness of a specific type of gender selection process, using 15 couples trying to have baby girls.

Problem in statistical business economics : The rate of return for one year (reported in percent) for a sample of 12 mutual funds 4.634 4.15 4.76 4.70 4.65 4.52 4.70 5.06 4.42 4.51 4.24 4.52. Using .05 significance level,

Find an asymptotic confidence interval for alpha : Distribution and the method of moments estimators of the parameters are alpha(hat)= 5.23 and lambda(hat) = 21.3. Find an asymptotic 95% confidence interval for alpha.

Information about business economics : Studies from a local mall show the typical shopper spends 0.75 hrs shopping. the standard deviation is 0.10 hours. A sample of 45 shoppers revealed the mean time spent increased to .080.

Hypothesis testing on significance levels : Surveys have been widely used by politicians around the world as a way of monitoring the opinions of the electorate. Six months ago, a survey was undertaken to determine the degree of support for national party leader.

Is there a difference in number of points students earned : Thus, the first question he examines is as follows: Is there a difference in the number of points students earned on their educational statistics pretests and posttests?

What was the initial temperature of the water : Water (2290g ) is heated until it just begins to boil. If the water absorbs 4.99×10^5J of heat in the process, what was the initial temperature of the water.

Determining preference : Six people have declared their intentions to run for a county commission seat in the next general election. A political poll is conducted three-quarters of the way into the campaign to determine if there are any clear preferences on the part of th..

User Account

All Pages