04/22/20

#### A movie theater is testing out their soda machine to see if it is dispensing the same amount for their “small-sized” sodas

A quality control engineer is concerned that the machine is under filling the cups. He draws a random sample of 8 cups and records the following...
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04/22/20

#### P-Value and Test Statistic

Physicians at a clinic gave what they thought were drugs to 840 patients. Although the doctors later learned that the drugs were really placebos, 58% of the patients reported an improved condition....
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03/19/20

#### Use the table below to calculate the rate of inflation between 2008 and 2009.

Year
Consumer Price Index
2008
150
2009
165
Inflation Rate between 2008 and 2009=

03/02/20

#### Perpetuities - Annuities

A perpetuity pays $2X one year from today. The payments increase by 5% per year thereafter. The effective annual interest rate on this perpetuity is 6%. The present value is $32,400. A second...
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06/02/15

#### Annual interest rate

Sally invests $4000 in a savings account which compounds interest monthly. After 10 years, she has a balance of $4,491.73. What is the annual interest rate of the account, rounded to the nearest...
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05/12/15

#### True or False?

When the necessary conditions are met, a two-tail test is being conducted to test the difference between two population means, but your statistical software provides only a one-tail area of 0.156...
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