Explain why or why not. When is the mean the best measure of central tendency? When is the median the best measure of central tendency?
Explain why or why not. When is the mean the best measure of central tendency? When is the median the best measure of central tendency?
I know the answer is .414, but I need to know how to get it. Thank you so much!!!
An underwriter of home insurance policies studies the problem of home fires resulting from wooding-burning furnaces. Of all homes having such furnaces, 30% own a type 1 furnace, 25% a type 2 furnace,...
A study determined that 5% of children under 18 years of age live with their father only. Find the probability that at most 2 individuals selected at random from 14 children under 18 years of age...
Janey always waits until her gas tank is nearly empty before she refuel a. She keeps a record of the distance she drives on each tank of gas. The distance varies, depending on the weather...
For after-hours emergencies, doctors often use a messaging/paging service to allow patients to contact them. If it is known that 30% of the patients who call the messaging service fail to leave a...
Assume you go to the doctor and you are tested for the dreaded XYA disease. He informed you that you tested positive. Since the the test has a false positive rate of 5% he tells you there is only...
A team of marine researchers is investigating ocean life that lives in the Hadalpelagic Zone (>6,000m beneath the surface). In this zone it is believed that the average depth the strange creatures...
Movie trailers are designed to entice audiences by showing scenes from coming attractions. Several trailers are usually shown in a theater before the start of the main movie, and most are available...
I have a control of 4 groups. I have 24 experimental groups. I want to know if the difference between the weight difference (from day one to the final day) of the experimental groups...
I don't know much about statistics. We have data on purchasing patterns of people living in one County. In this county, young and old groups purchase products A, B, C, D, E, F . Product:...
The general population (Population 2) has a mean of 30 and a standard deviation of 5, and the cutoff Z score for significance in a study involving one participant is 1.96. If the raw score obtained...
A sample of 350 orders for take out food at a local pizzeria found that the average cost of an order was $29 with s=$15. 1) find the margin of error, if we use 85% confidence interval, for...
Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean...
At a gas station in France, the price of gasoline is 1.38 euros per liter. What is the price in dollars per gallon? 1 gal = 3.785 L $1US = 0.80 euros
During the period of 6 months, the price of gasoline increased 27%. Then, for the following 6 months, the price has decreased by 18%. By how much has the price of gasoline change over this 12 months...
Its a probability problem and I have to find the probability of how many students don't do their homework
a) How many ways can the dealer get exactly one car with problems? b) How many ways can the dealer get at least one car with problems? c) What is the probability that the dealer will receive...
The random variable x is known to be uniformly distributed between 70 and 90. The probability of x having a value between 80 to 95 is
Need to prove the following (a) If P(A)>P(B), then P(A|B)>P(B|A). (b) If A is independent of B, then A is independent of B' (c) If A is independent of B, then A' is independent...