Confidence interval estimate of mean sat scores
A random sample of 225 SAT scores has a mean of 1500. Assume that SAT scores have a population standard deviation of 300. Construct a 95% confidence interval estimate of the mean SAT scores. Show all work.
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Sneed Corporation reported balances in the following accounts for the current year: Beginning Ending Income tax payable $54 $34 Deferred tax liability 76 147 Income tax expense was $234 for the year.
a) Find the resistance of a 1.3m length of gold wire with diameter 4.2×10^-5m . Express your answer to two significant figures and include the appropriate units.
Creble Company reported net income for 2011 in the amount of $46,000. The company's financial statements also included the following: Increase in accounts receivable $4,900
After a load of 23.6 kN is applied, the gage length increases by 0.311 mm and its diameter decreases by 0.017 mm. Find: the modulus of elasticity and the modulus of rigidity.
The changes in account balances for Elder Company for 2011 are as follows: Assets $488,000 debit Common stock 236,000 credit Liabilities 141,000 credit Paid-in capital.
Heat is added at constant pressure until a temperature of 1480 degrees C is achieved. Calculate: The amount of heat supplied per kg of air. Assume a cold air-standard cycle, with Cp = 1.005, Cv = 0.718 and R = 0.287 kj/kg.
A person walks first at a constant speed of 4.80 m/s along a straight line from point circle a to point circle b and then back along the line from circle b to circle a at a constant speed of 3.15 m/s. (a) What is her average speed over the entire
Black Enterprises reported the following ($ in 000s) as of December 31, 2011. All accounts have normal balances. Deficit 2,200 Common stock 3,100
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