Determining z-score of sample means

Assignment Help Finance Basics

Reference no: EM1311405

1) Assume distribution of SAT scores is normal with the mean of µ = 500 and standard deviation σ is unknown. If mean SAT score is calculated from the sample of n = 100 students from this population, and standard deviation of those students’ scores is s = 125.

a) What range of values must have the sample mean 95% of time?

b) What range of values must have the sample mean 99% of time

2) Population has mean of µ = 45 and standard deviation of σ = 20. Determine the z-score corresponding to each of the given sample means obtained from this population.

a) Mean = 47 for a sample of n = 4 scores

b) Mean = 47 for a sample of n = 100 scores

c) Mean = 40 for a sample of n = 16 scores

Reference no: EM1311405

Questions Cloud

The average die temperature after a die-casting operation : In a die-casting operation 0.1 kg charges of molten zinc alloy at 410 degrees C are injected at a rate of 120 charges per hour. Calculate the average die temperature after a die-casting operation

Computation of required return : Computation of required return and If MUG stock currently sells for $48 per share then what is the required return

Closed economy and small open economy : Discuss how each of the following developments would affect the supply of the money, the demand for money, and the interest rate. For each case, describe what happens in closed economy and in small open economy. Describe your answers with diagrams.

Purpose a production budget for playclay : Purpose a production budget for Playclay for the months July, August, September, and October and Materials purchase Budget For the quarter from the data given below

Determining z-score of sample means : Population has mean of µ = 45 and standard deviation of σ = 20. Determine the z-score corresponding to each of the given sample means obtained from this population.

What role might decentralization play : Denny has assured Austin that the information is accurate and that the expenses are properly classified and Do you believe this situation is more likely or less likely to occur in larger v. smaller companies? What role might decentralization play..

Gini coefficient and hypothetical gini values : First explain what the Gini coefficient is and what hypothetical Gini values of 0 and 1 mean. Sort the data by the Gini coefficient in 2000 and look at the list of countries.

Dissertation writing - criminology and law enforcement. : Dissertation writing - Criminology and law enforcement. "When you are the sheriff of Nowhere, you encounter strange crimes"

Computation of current share price : Computation of current share price and If the required rate on this stock is 10% what is the current share price

User Account

All Pages