Tuesday
December 10, 2013

# Posts by apryl

Total # Posts: 32

math
The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 165 and a variance of 4. The material is considered defective if the breaking strength is less than 161 pounds. What is the probability that a single, randomly selected piece o...

math
The diameter of an electric cable is normally distributed, with a mean of 0.8 inch and a standard deviation of 0.01 inch. What is the probability that the diameter will exceed 0.82 inch? (Give the answer to four decimal places.)

math
Suppose that people's heights (in centimeters) are normally distributed, with a mean of 175 and a standard deviation of 6. We find the heights of 40 people. (a) How many would you expect to be between 169 and 181 cm tall? 1 (b) How many would you expect to be taller than 1...

Statistics
.4974

Statistics
For a particular value, this table gives the percent of scores between the mean and the z-value of a normally distributed random variable. What percent of the total population is found between the mean and the z-score, assume z = 2.79

math
Suppose that you want to purchase a home for \$450,000 with a 30 year mortgage at 6% interest. Suppose that you can put 40% down. Assume that the monthly cost to finance \$1,000 is \$6.00. What is the total amount of interest paid on the 30 year loan?

Geometery
i just guessed

math
Calculate the monthly finance charge for the following credit card transaction. Assume that it takes 10 days for a payment to be received and recorded and that the month is 30 days long. Assume 365 days in a year. (Round your answer to the nearest cent.) \$3,000 balance, 21% ra...

math
A car dealer will sell you a used car for \$7,742 with \$742 down and payments of \$309.93 per month for 24 months. What is the APR?

math
\$3,000 at 8% for 30 years (a) Calculate the future amount if the money were invested at simple interest

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