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Calculate the mean number of Magazine subscriptions per house hold. A construction company has bid on two contracts.
Suppose that 1% of a clinic's patients are known to have Lyme disease. A test is developed that is positive in 99% of patients with Lyme disease, but it is also positive in 3% of patients who do not
A random sample of 85 group leaders and supervisors revealed that they worked an average of 6.5 years before being promoted. The population standard deviation was 1.7 years. Using the 0.95 degree of
It is also known that 15% of walls painted with this paint need more than 55 minutes to dry completely. Find the standard deviation of this distribution.
A newspaper article about the results of a poll states:In theory, the results of such a poll, in 99 cases out of 100 should differ by no more than 2 percentage points in either direction from what w
The monthly earnings of computer programmers are normally distributed with a mean of $4,000. If only 1.7 percent of programmers have monthly incomes of less than $2,834, what is the value of the sta
His least squares regression line equation is: "assembly line output" = 1.03 + (5.1389 x Test Score). Which scatter plot has the graph of his line?
The lifetime of automobile tires of a certain brand are found to follow an exponential distribution with mean 30 (in thousands of miles). Find the probability that one of these tires will last
A certain poultry farmer finds that 7% of his eggs are underweight, and that 14% weigh over 72 grams. If a normal model is appropriate, what would the standard deviation of his egg weights be?
A study of cats and dogs found that 29 of 50 cats and 19 of 50 dogs slept more than 10 hours per day. At the 0.05 level of significance, is there sufficient evidence to conclude that a difference e
when 319 college students are randomly selected and surveyed, its is found that 120 own a car. find a 99% confidence interval for the true proportion of all college students who own a car.
Comparing the weight of every person in a group of people before they went on a diet with their weight after they completed the diet program. I would want to know whether each person's weight after
determine the mean for the eggs' weights. Assume that the distribution of the weights is NORMAL and the Standard deviation = .4 ounces.
The ticket sales for sporting events at the new Civic Arena are believed to be normally distributed with a mea 1.The ticket sales for sporting events at the new Civic Arena are believed to be normal
You survey 40 random independent individuals and find a mean of 24.8 with a standard deviation of 3.1 years. What is the probability that you will find another sample with a mean greater than 24.8
the most famous geyser in the world, old faithful in yellow stone national park, has a mean time between eruptions of 85 minuntes. if the interval of tiem between eruptions is normally distributed w
A company manufactures batteries for watches. A random sample of 169 batteries is taken and the sample mean life is 5.5 years with a standard deviation of 0.6 years. If you were constructing a 99%
Please write a hyposis statement for the graduation rate of students each year for UoP is 65,000 also need a nuermical hyposis statement with a range of .01?
What is the probability that 7 or more are defective? What is the probability that exactly 7 cabinets are defective? What is the probability that there are more than 8 defective file cabinets?
A box contains five $1 bills, ten $2 bills, three $5 bills, four $10 bills, one $20 bill, one $50 bill and one $100 bill. You get one turn to reach in and pick out one bill. What would you need to c
Sixty-two percent of adults say chocolate chip is their favorite cookie. If you select 8 adults what is the:
What is the standard deviation of the total weight of 100 randomly chosen babies? What is the expected total weight of 10,000 randomly chosen babies?
It was found that 75 lasted more than 1000 hours. Find the point estimate for the population proportion, the margin of error for a 95% confidence and then construct to the 95% confidence interval f
Mrs. Smith's reading class can read a mean of 175 words per minute with a standard deviation of 20 words per minute. The top 3% of the class is to receive a special award. What is the minimum number
The following reflects cups per day cosumed. Generate a 95% confidence interval for the difference in mean number of cups of coffee consumed between men and women.