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Compute the present value of a five-year, 6% & 10% coupon bond with a face value of $1000. What happens when the interest rate goes down to 8%? we have two 5 years bonds,
A recent study reported that the prevalence of hyperlipidemia (defined as total cholesterol over 200) is 30% in children 2- 6 years of age. If 12 children are analyzed,
How many dollars in sales would the company need to do in year 10 to have an average of $1,004,342? I got this one wrong on the test. would someone explain how to do it? The answer is 1,013,374 but
Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of $2,225 per hour and a standard deviation of $250. What is the operating cost for the
A random sample of size n=100 is taken from a population with a mean u =80 and standard deviation =14. Calculate the standard deviation for the sampling distribution of the sample mean.
At a certain university, the average attendance at basketball games has been 3100 spectators per game. Due to the dismal showing of the team this year, the attendance for the first 13 games has been
At a certain university, the average attendance at basketball games has been 3200 spectators per game. The attendance for the first 15 games has been 2700 spectators per game with a standard deviati
The average speed of greyhound dogs is about 18.5 meters per second. A particular greyhound breeder claims that her dogs are faster than the average greyhound.
Find the equation of the regression line for these data. What is the value of the standard error of the estimate?
A laboratory sampled and tested 16 chicken eggs and found that the mean cholesterol was 230 mg. with a standard deviation was 20 mg. If cholesterol is normally distributed, Find a 96% confidence int
The following data represent the amount of sugar consumed (in lbs.) in a household during five randomly selected weeks. Sugar consumption for the household is normally distributed.
A sample of 9 quiz scores had a mean of 15.2 and a sample standard deviation of s = 3.3. If it is known that the quiz scores are approximately normal, find a 95% confidence interval for the mean in
Age at onset of dementia was determined for a sample of adults between the ages of 60 and 75. For 15 subjects, M = 67.2 and s = 3.06. Use this information to answer the following:
The central limit theorem says that when a simple sample of size n is drawn from any population with mean ? and standard deviation ?, then when n is sufficiently large
Scores on the Critical Reading part of the SAT exam in a recent year were roughly Normal with mean 501 and standard deviation 112. You choose an SRS of 100 students and average their SAT Critical Re
The mean value of land and buildings per acre from a sample of farms is $1500, with a standard deviation of $200. Estimate the percent of farms whose land and building values per acre are between $1
Do the data provide sufficient evidence to conclude that the mean delivery time for the local pizza restaurant is less than the mean delivery time for the national pizza chain? Conduct hypothesis te
If 3 different factor levels show a lot of variation between levels this implies:
A television ratings analyst estimates that at least 72% of U.S. adults enjoy science fiction shows. In a random sample of 150 U.S. adults, 69% say they enjoy science fiction shows. At = 0:05, concl
Find the critical values for the indicated test for a population variance sample size n and the level of significance a
Surveys repeatedly show that about 40% of adults in the U.S. indicate that if they only had one child, they would prefer it to be a boy. Suppose we take a random sample of 25 adults.
In the standard normal distribution, what is the probability that a value is greater than 1.55?
Major League Baseball (MLB) uses a best of 7 series to determine the winner for the finals (the winner must win 4 games). The following is the Probability Distribution of the number of games needed
Conduct a hypothesis test to determine if the percentage of American adults in 2014 who say they always or usually pay the full amount on their credit cards each month is at least 5% higher than the