Confidence interval for mean score on test by error of mean

Assignment Help Basic Statistics

Reference no: EM13142700

A sample of 65 business people was randomly selected and given a leadership test, which measures motivation and "internal strength." The mean score on this test was 84.4, with a standard deviation of 6.5.

a. What is the estimated standard error of the mean? 0.806
b. What are the degrees of freedom?
c. Determine the value of t.
d. Construct a 95 percent confidence interval for the mean score on this test, using the estimated standard error of the mean.
e. Interpret your results.

Reference no: EM13142700

Questions Cloud

Why you company uses accelerated depreciation method : Why do you think that the company uses accelerated depreciation methods in its income tax returns?

Find specific information about which metals interact edta : The effect of various metal ions on alkaline phosphatase (AP) activity. Each metal ion was added at 10 mM concentration, except zinc, which was added at 0.5 mM.

Result of converting from fifo to lifo : An entity changed from the FIFO to the LIFO cost flow assumption for inventories. Assuming that inventory and sales remain constant over time, and that prices are rising, how would the current ratio be changed as a result of converting from FIFO t..

Define soda ash and quicklime : Soda Ash and QuickLime, A lime-soda softening plant treats a flow of 150 MGD, and the water has 86mg/l Ca2+, 35 mg/L Mg2+, 299 mg/L HCO3- and 6mg/l CO2.

Confidence interval for mean score on test by error of mean : A sample of 65 business people was randomly selected and given a leadership test. Construct a 95 percent confidence interval for the mean score on this test, using the estimated standard error of the mean.

Identify and distribute indirect costs : Cost Allocation is a method to identify and distribute indirect costs. Direct costs are costs assignable to a specific cost objective, whereas indirect costs are costs incurred for multiple cost objectives or not assignable to a specific cost obje..

Compute the equivalent units of production for materials : Compute the equivalent units of production for materials and conversion costs for the month of September: Compute the unit costs for materials and conversion costs for the month. Determine the costs to be assigned to the units transferred out and in ..

Explain what is the ph value of water containing : What is the pH value of water containing 0.005 M of an acid with a acid dissociation constant of 0.001 M. The dissociation of the acid in water can be represented as: HA H+ + A-

What is this phenomenon called : Scientists have found that early fish have lungs and then developed swim bladders. Today humans have lungs and not swim bladders. What is this phenomenon called?

User Account

All Pages