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A random sample of 19 people used by the Florida state authority established they earned an average wage (comprising benefits) of $59 per hour. The sample standard deviation was $6.45 per hour. Wha
Determine the point estimate of the population mean? (Round your answer to 3 decimal places. Omit the "tiny_mce_markerquot; sign in your response.)
A survey is being planned to determine the mean amount of time corporation executives watch television. A pilot survey indicated that the mean time per week is 16 hours, with a standard deviation of
The length of time it takes college students to find out a parking spot in library parking lot follows normal distribution with mean of 4.5 minutes and standard deviation of 1 minute. Find out the c
Assume a brewery has filling machine which fills 12 ounce bottles of beer. It is known that amount of beer poured by this filling machine follows the normal distribution with mean of 12.14 ounces as
A sample of 8 observations is selected from a normal population for which the population standard deviation is known to be 4. The sample mean is 24. (Round your answers to 3 decimal places.)
The results of the hypothesis test are reported as follows: t(8) = 2.25, p > .05. Based upon this report, what was statistical decision and how big was the sample?
The table below presents data on rates of growth of vegetation in three different swamps.
Two samples from same population both have M = 84 and s2 = 20, but one sample has n = 10 and the other has n = 20 scores. Both samples are employed to measure a hypothesis that ? = 80 and to calcula
Which of the following is a difference between a hypothesis test with the t statistic and a test with a z-score?
A study is conducted to see if diet has any effect on blood pressure. Four groups of 10 women each are given four kinds of diets. After 4 months, the blood pressures of groups are compared.
We know that if the probability of an event happening is 100%, then the event is certainty. Can it be concluded that if there is a 50% chance of contracting communicable disease through contact with
Porphyrin is the pigment in blood protoplasm as well as other body fluids that is significant in body energy and storage. Let x be a random variable which represents the number of milligrams of porp
A pharmaceutical company is testing the effectiveness of a new drug for lowering cholesterol. As part of this trial, they wish to determine whether there is a difference between the effectiveness fo
The product management team asks you for analysis of the stock-out probabilities for different order quantities, an estimate of the profit potential, and to help make an order quantity recommendatio
How many Level four visits would a physician working five days a week have on average, per day? Show work
Assume that the population of heights of female college students is approximately normally distributed with mean m of 67.26 inches and standard deviation s of 5.96 inches. A random sample of 78 heig
What are some benefits and drawbacks of hypothesis tests? Give an example of a situation in which the results of a hypothesis test could lead to a mistaken conclusion.
Mysti Farris (see Problem 1-19) thinks that there is high probability that 120 pool cues can be sold if the selling price is appropriately set. What selling price would cause break-even point to be
In your own line of work, provide one example of a discrete and one example of continuous random variable, and discuss why each is continuous or discrete.
An important indicator of lung function is forced expiratory volume (FEV), which is the volume of air that the person can expire in one second. Dr. Hernandez plans to determine FEV in a random sampl
On the average, sales have been about 87,000 packages of No-Stick follows normal curve, with standard deviation of 4,000 packages. Determine the probability that sales will be less than 81,000 packa
Determine the probability that the sample mean strength of 100 of these cables is below 457 lb.?
A local politician claims that 1 in 5 automobile accidents involves a teenage driver. He is advocating increasing the age at which teenagers can drive alone.
When each and every data value in one sample is paired with the corresponding data value in another sample for sample of 35 individuals or objects and the corresponding difference are computed, what