State the null and the alternative hypotheses

Assignment Help Econometrics

Reference no: EM13210243

Children in the United States account directly for $ 36 billion in sales annually. When their indirect influence over product decisions is considered, the total economic spending affected by children in the US is $ 290 billion. It is estimated that by age 10, a child makes an average of more than 5 trips per week to a store. Suppose that you want to prove that children in Los Angeles average more than 5 trips a week to a store. Let represent the population mean number of times children in Los Angeles make trips to a store.

a) State the null and the alternative hypotheses.

b) Explain the meaning of the Type I and Type II errors in the context of this scenario.

c) In Los Angeles, you take a sample of 100 children and find that the mean number of trips to the store is 5.47 and the sample standard deviation of the number of trips to the store is 1.6. At the 0.01 level of significance, is there evidence that the population mean number of trips to the store is greater than 5 per week?

Reference no: EM13210243

Questions Cloud

State the presence or absence of nickel : A biological sample was submitted to you lab for a nickel assay. Assume you are assaying a 2.06 g tissue sample for the presence or absence of nickel at the 0.1ppb (m/m) level

Create a program called tokens.java : Create a program called Tokens.java that will receive any text file name as a command line argument and display all the unique tokens (separated by space/s) there are in the given text file

Find the appartent recovery for the analyte : carried through the analysis, the error in determining the analyte is +6.3%. (a) Determine the appartent recovery for the analyte if R1=0. (b) deter,ome the apparent recovery for the interferent if Ra=1.

State the mole fraction of kr if the partial pressure : What is the mole fraction of Kr if the partial pressure of Xe and Ar are 1.60 atm and 2.8 atm, respectively?

State the null and the alternative hypotheses : Children in the United States account directly for $ 36 billion in sales annually. When their indirect influence over product decisions is considered, the total economic spending affected by children in the US is $ 290 billion.

Explain what is the magnitude of delta for the complex : The d-d transition in [Ti(H2O)6]3+(aq) produces an absoption maximum at 500 nm. What is the magnitude of DELTA for this complex in kJ/mol?

Recall the recursive formulas for fibonacci numbers : Recall the recursive formulas for Fibonacci numbers F(sub 2n+1) = ( F(sub n+1) )^2 + ( F(sub n) )^2

Compare the average success index for two groups : Behavioral researchers have developed an index designed to measure managerial success. The index (measured on a 100-point scale) is based on the manager's length of time in the organization and his or her level within the firm: the higher the inde..

Broad knowledge of the history of islam : Demonstrate a broad knowledge of the history of Islam and explain of the basic doctrines of the Islamic religion,

User Account

All Pages