It is estimated that 3.2% of the general population will live past their 90th birthday. In a graduating class of 737 high school seniors, find the following probabilities. (Round your answers to four...
It is estimated that 3.2% of the general population will live past their 90th birthday. In a graduating class of 737 high school seniors, find the following probabilities. (Round your answers to four...
The claim is that the IQ scores of statistics professors are normally? distributed, with a mean greater thangreater than 118. A sample of 12 professors had a mean IQ score of 119with a standard deviation...
In the game of roulette a player gives the casino $7 for a bet on the number 5, the player has a 37/38 probability of losing $7 and a 1/38 probability of making a net gain of $245. (The prize is $252...
Data analysis for 148 Bumble Bee shrimp resulted in 95% confidence interval for this mean to be 5.5 grams to 8.5 grams. What is the value of the margin or error for listed interval?
Listed below are the amounts of mercury? (in parts per? million, or? ppm) found in tuna sushi sampled at different stores. The sample mean is 0.879 ppm and the sample standard deviation is 0.356 ppm...
An insurance company is studying wheat hail damage claims in a county in Colorado. A random sample of 16 claims in the county reported the percentage of their wheat lost to hail. 16 9 7 13 12...
It is estimated that 3.2% of the general population will live past their 90th birthday. In a graduating class of 737 high school seniors, find the following probabilities. (Round your answers to four...
Ocean fishing for billfish is very popular in the Cozumel region of Mexico. In the Cozumel region about 46% of strikes (while trolling) resulted in a catch. Suppose that on a given day a fleet of...
What are the chances that a person who is murdered actually knew the murderer? The answer to this question explains why a lot of police detective work begins with relatives and friends of the victim...
A pet store has 14 puppies, including 5 poodles, 5 terriers, and 4 retrievers. If Rebecka and Aaron, in that order, each select one puppy at random without replacement, find the probability that both...
Find and interpret a 95% confidence interval for a population mean m for these values: n?? 36 x??-bar 13.1 s2 ??3.42
The number of calls coming to a call center follows a Poison distribution. On average 90 calls arrive every hour on Mondays between 10 am and 11 am. The probability that exactly three calls will arrive...
I have no idea evn how to start this question The average Demand for renatl skis on winter Saturdays at a particular area is 150 pairs which has been quites stable over time. There is variation...
Salaries of 3939 college graduates who took a statistics course in college have a? mean, x overbarx?, of $ 66 comma 300$66,300. Assuming a standard? deviation, sigmaσ?, of ?$17 comma 41217,412?, construct...
It says to use the normal curve, so using the binomial formula not the way to solve it? The answer is 6.38%, but I cannot figure out how to solve this.
Four balls with different colors: red, yellow, green, and blue, are placed in a box. Every time Amy picks up a ball, then puts it back to the box and draws one again, repeating it five times. a)...
I have a large amount of data with distance to object and probability of spotting the object. If I run Excel correlation (=correl(a,b)) on the data I get a small negative correlation, if I average...
Over the past 5 years, the mean time for a warehouse to fill a buyer’s order has been 25 minutes. Officials of the company believe that the length of time has increased recently, either due to a change...
Listed below are the amounts of mercury? (in parts per? million, or? ppm) found in tuna sushi sampled at different stores. The sample mean is 0.9460.946 ppm and the sample standard deviation is 0...
In a test of the effectiveness of garlic for lowering? cholesterol, 4747 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment...