A local hardware store claims that the mean waiting time in…

A local hardware store claims that the mean waiting time in line is less than 3.5 minutes. A random sample of 20 customers has a mean of 3.2 minutes with a standard deviation of 0.8 minute. If α = 0.10, test the store’s claim. H0: = 3.5 Ha:   Test statistic: p-Value =              Decision: Conclusion: There sufficient evidence to support the conclusion that the mean waiting time at this hardware store is than 3.5 minutes.

A recent study claimed that 15% of junior high students are…

A recent study claimed that 15% of junior high students are overweight. In a sample of 160 students, 18 were found to be overweight. At α = 0.05, decide if this sample gives evidence that the proportion of overweight junior high students is actually different from 15%. H0: p 0.15 Ha: p   Test statistic: p-Value = Decision:  Conclusion: There sufficient evidence to support the conclusion that the percentage of junior high students is than 15%.

The structure of The Capital is the same as the other 24 hot…

The structure of The Capital is the same as the other 24 hotels in the franchise . Managing Director –Jack Bouwer Managers of Human resources,Finance,Marketing and Housekeeping Employees Deputy managers for human resources ,finance and housekeeping Board of directors   1d. Using the above  information ,prepare an organisational chart for the Capital (5)