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A sample of 28 of 180 funded projects revealed that 14 were valued at the $17,260 each as well as 14 were valued at $20,620 each. From the sample data, determine the total value of the funding for a
Consider the following. (Give your answers correct to two decimal places.) Find the t value t (12, 0.01).
Assume 16 coins are tossed. Determine the probability of getting the following result using the binomial probability formula and the normal curve approximation.
An engineer is going to redesign ejection seat for airplane. The seat was designed for the pilots weighing between 130 lb and 181 lb. the new population of pilots has normally distributed weights wi
Ben claims that average price of car wash in West Newton is more than $6.00. A sample of five car washes has average price of $6.60 and a standard deviation of $1.10. At alpha = 0.05, test Ben's cla
How many different kinds of circuits should be selected for employ in the experiment in order to obtain an alpha=.01 test having power of at least 0.90 whenever standard deviation in the Types of ci
Your consulting company was appointed by sports regulatory organization to build the model which related attendance over the season for sports teams to all the different factors that affect attendan
There're two urns. The first urn haves 2 black balls as well as 3 white balls. The second urn haves 4 black balls and 3 white balls. An urn is chosen at random, and ball is selected at the random f
A survey found that the 80% of consumers would prefer organically grown produce over those treated with the fertilizers and pesticides. Assume you ask the random sample of 14 people if they prefer
In a multiple regression with six predictors in a sample of 67 U.S. cities, what would be the critical value for an F test of overall significance at = .05?
Which Excel function will provide the p-value for overall significance if a regression has 75 observations and 5 predictors and gives an F test statistic Fcalc = 3.67?
A disadvantage of Excel's Data Analysis regression tool is that it expects the independent variables to be in a block of contiguous columns so you must delete a column if you want to eliminate a pre
The man-hour determine for test and evaluation was based on using expert opinion to come up with optimistic, pessimistic and most likely positions. This resulted in a triangular distribution with a
On average 3.6 meteorites weighing more than one kilogram reach surface of Earth each year. Throughout the next ten years, we wish to approximate the probability that at least 40 meteorites weighing
Calculate the approximate sample mean, sample variance, sample standard deviation, sample median, and sample mode from the data in the following frequency distribution:
Complete the hypothesis test with alternative hypothesis (mu)d ?d < 0 based on the paired data that follow and d = M - N. Use ? (alpha) = 0.02. Assume normality.
It is asserted that 90 percent of cars approaching an individual toll both in New Jersey are equipped with an E-ZPass transponder. Find the probability that in a sample of six cars:
Determine the missing value of y in the table. How would the values of this table be interpreted in terms of linear regression?
Calculate the coefficient of determination. Round your answer to four decimal places. The regression equation for the data below is y =3x. x = 2, 4, 5, and 6 y = 7, 11, 13, 20
In the certain population of mussels, 80% of the individuals are infected with intestinal parasite. A marine biologist plans to analyze 50 randomly selected mussels from population. Determine the pr
In the certain population of mussels, 80% of individuals are infected with an intestinal parasite. A marine biologist plans to examine 50 randomly chosen mussels from the population. Find the probab
Determine the Variance and Standard deviation for the number of times the SAT is taken (to 4 decimals)?
A certain adjustment to machine will change the length of the parts it makes but will not affect the standard deviation. The length of the parts is normally distributed, and the standard deviation i
A hypothesis test is to be performed. Find out the null and alternative hypothesis. A psychologist has designed a test to measure stress level in adults. She has determined that nationwide the mean
Assume a certain population of observations is normally distributed. Determine the value of z* such that 95% of the observations in the population are between -z* and +z*, on the Z scale.