Assume the distributions of time a customer is on hold are

Assignment Help Basic Statistics

Reference no: EM13630453

A customer service representative was interested in comparing the average time (in minutes) customers are placed on hold when calling Southern California Edison and Southern California Gas companies. The representative obtained two independent random samples and calculated the following summary information:

Edison: n1= 9 xbar1= 3.2 s1= 0.5min

Gas: n2= 12 xbar2= 2.8 s2= 0.7min

Assume the distributions of time a customer is on hold are approximately normal.

In a minimum of 5 steps, show work: Perform an appropriate hypothesis test to test whether there is a significant difference in average time a customer is on hold between the two companies. Use the .10 significance level.

Reference no: EM13630453

Questions Cloud

Major league baseball mlb uses a best of 7 series to : major league baseball mlb uses a best of 7 series to determine the winner for the finals the winner must win 4 games.

Find the velocity of the satellite relative to that of the : suppose a satellite in geosynchronous orbit has just passed above the international space station with respect to the

Conduct a hypothesis test to determine if the percentage of : according to a recent gallup poll more americans who own credit cards say they always pay the full amount of their

Use the perfomance characteristics of the marine propeller : total power required to overcome viscous resistance and wave drag is 11.4 mw. use the perfomance characteristics of the

Assume the distributions of time a customer is on hold are : a customer service representative was interested in comparing the average time in minutes customers are placed on hold

Find the power in hp of the compressor the heat rate added : a wet compression refrigeration cycle uses hfc-134a as the working fluid and operates between 75 f and 8 f. use a mass

Find the 95 confidence interval for the variance of the : find the 95 confidence interval for the variance of the heights of maple trees if a sample of 21 trees has a standard

Determine the minimum coefficient of static friction : if the coefficient of static friction between the crate and ground is 0.3 determine the minimum coefficient of static

Find the 95 confidence interval for the variance of the : find the 95 confidence interval for the variance of the heights of maple trees if a sample of 21 trees has a standard

User Account

All Pages