The annual rainfall in a town has a mean of 54.57 inches and a standard deviation of 12.84 inches. Last year there was rainfall of 71 inches. How many standard deviations away from the mean is that? Round your answer to two decimal places.
Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…
A: given data, normal distribution , μ=100σ=15we have to find out the shaded region for the given…
Q: There are five people in a room, ages 10, 10, 15, 20 and 20. If the 15 year old leaves the room, the…
A:
Q: Suppose you select a sample of 2,000 high school seniors' verbal SAT scores. The mean and standard…
A:
Q: Find the standard deviation of the lengths of the wolves in the entire animal preserve.
A: The mean of the lengths of the wolves in the entire animal preserve is,…
Q: You throw a ball as far as you can 5 times, recording the distance for each throw: 165 feet, 184…
A: since only 5 observation is given we will consider them as sample (n = 5)and population (N = 100)…
Q: Use the body temperatures, in degrees Fahrenheit, listed in the accompanying table. The range of the…
A:
Q: In a population of ages where the mean age is 45 and the standard deviation is 5.25, what are the…
A: Given mean age = 45Standard deviation = 5.25The Z score with 0.0505 to its left is -1.64 and the Z…
Q: A nutritionist wants to determine how much time nationally people spend eating and drinking Suppose…
A: According to the given information in this question, we need to answer part c
Q: For a group containing 100 observations, the arithmetic mean and the standard deviation 9 a nd-/1O5…
A: In the given situation, there are 100 observations. The arithmetic mean is 8 and the standard…
Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…
A:
Q: The annual salaries for workers at a local mill are normally distributed with a mean of $45,000 and…
A: The annual salaries for workers at a local mill are normally distributed with a mean of $45,000 and…
Q: Cars on I-40 have a mean speed of 73 MPH at a certain mile marker, with a standard deviation of 8…
A: Let X = speed of the car. X~N73, 82 To calculate P[70<X<75]. So,…
Q: The following are data regarding number of minutes to accomplish a certain task: 121, 134, 145, 212,…
A: From the provided information, The data values are as follow: 121, 134, 145, 212, 289, 306, 367,…
Q: Suppose that you are designing an instrument panel for a large industrial machine. The machine…
A: Given data,For Women,Mean μ=2.5sd σ=0.5For Men:Mean μ=2.8sd σ=0.6The machine requires the…
Q: In my homework assignment, I have a concern about standard deviation do I have to round it to two…
A: Rounding-off must always be done as per the instruction in the question. In the absence of an…
Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…
A:
Q: sume that the readings on the themometers are normally distributed with a mean of 0" and standard…
A: We have find givan normal distribution...
Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…
A: normal distribution μ = 100σ = 15 P(85<x<110) = ?
Q: It takes an average of 12.1 minutes for blood to begin clotting after an injury. An EMT wants to see…
A: The random variable is time to blood clotting.We have to test whether the population mean time for…
Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…
A:
Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…
A:
Q: The amount of income taxes that people owe each year varies greatly from person to person because…
A:
Q: 1. The average test score of entire school is 78 with standard deviation 10. A teacher took a random…
A: (1) Average or mean (μ) = 78 and standard deviation (σ) = 10 and sample size (n) = 75 Note:…
Q: In which month is it more unusual to have a day with a high temperature of 57°? Explain
A: For January, mean = 36 and SD = 9 Fir July, mean = 77 and SD = 8 First we calucuate the z scores of…
Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…
A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…
Q: A standardized test has a pop. mean of 152 and a standard deviation of 16. Molly scores at the 91st…
A:
Q: help me need text answer urgently. Question. Molly injured her ankle 12 weeks ago. Each week, her…
A:
Q: Adult men have an average height of 69.0 inches with a standard deviation of 2.8 inches. Find the…
A: given data, μ=69.0σ=2.8height of a man with a z-score of -1.75 =?
Q: Human pregnancies are normally distributed with a mean of 267 days and a standard deviation of 15…
A: The mean is 267 days and the standard deviation is 15 days.
Q: In an administration to 2000 student the average score is 65 and the standard deviation is 25.…
A: Given in an administration to 2000 student the average score is 65 and the standard deviation is 25.…
Q: The amount of caffeine in a sample of five-ounce servings of brewed coffee is shown in the…
A: Solution: The frequency distribution for the data is f Midpoint x xf 2 70.5 141 10 92.5 925…
Q: pasting the output into Word and attaching it to your post. Graph the data as a histogram with a fit…
A:
Q: The average annual precipitation in Vancouver, British Columbia is 1300 mm. Assuming that the…
A: The value of μ=1300μ+σ=1530, μ+σ=1070μ+2σ=1760, μ+2σ=840μ+3σ=1990, μ+3σ=610 a) Annual…
Q: The mean and standard deviation for the final exam in Dr. Fudd's class were as follows: mean = 86…
A: Given that Mean = 86 , Standard deviation = 3 Bugs scored = 88
Q: Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard…
A:
Q: Data from the Bureau of Labor Statistics' Consumer Expenditure Survey show that annual expenditures…
A: Given: The average annual expenditure for cellular phone services=μ. The standard deviation of…
Q: The distribution of IQ (Intelligence Quotient) is approximately normal in shape with a mean of 100…
A: The random variable IQ follows normal distribution. We have to find the probability of people who…
Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…
A: Given,mean(μ)=100standard deviation(σ)=15
Q: The standard deviation in the sample means is called the margin of error.
A: Answer : False The given statement is incorrect.
Q: DECIMAL FORM: 15 17 18 19 20 21 22 23 24 P(X) 0.03 0.09 0.18 0.18 0.15 0.26 0.6 0.03 0.03
A: Formula used. E(x)= ∑x×p(x) E(x2 )=∑x2 ×p(x) Var(x)=E(x2 ) - [E(x)]2
Q: Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest…
A: The formula for calculation of z – score is shown below z = (x – xbar)/sd where, x…
Q: Refer to the accompanying table, which describes the number of adults in groups of five who reported…
A: Given Solution: The following is the data provided:
Q: Cars on I-40 have a mean speed of 73 MPH at a certain mile marker, with a standard deviation of 8…
A: Given data,μ=73σ=8P(X>78)=?
The annual rainfall in a town has a
Step by step
Solved in 2 steps
- You want to know the percentage of utility companies that earned revenue greater than 94 million dollars. If the mean revenue was 60 million dollars and the data has a standard deviation of 15 million, find the percentage. Assume that the distribution is normal. Round your answer to the nearest hundredth.If you buy one ticket everyday for 365 days, find the mean and standard deviation for the numbers of winning tickets in such groups of 365 tickets. Round to three decimal placesThe amount of caffeine in a sample of five-ounce servings of brewed coffee is shown in the histogram. Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. Click the icon to view the histogram. Complete the table. Round values to the nearest tenth as needed. Graph/chart f Midpoint x xf 70.5 Ay 30- 92.5 26 25- 114.5 136.5 20- 158.5 15- 12 Ef = Exf = 10- Find the mean of the data set. 5- X = (Round to the nearest tenth as needed.) 48.5 70.5 92.5 114.5 136.5 158.5 Complete the table. Round values to the nearest tenth as needed. Midpoint x (x-x)? (x-x)?f X-X 70.5 Print Done 92.5 114.5 136.5 158.5 (x-x)?r= ] of
- Adult men have an average height of 69.0 inches with a standard deviation of 2.8 inches. Find the height of a man with a z-score of 0.07. Round your answer to one decimal place. inchesYour cat weighs 13 lbs. If the mean for weight of cats is 10 pounds and the standard deviation is two pounds, what percentage of cats weigh more than your cat? Round to the nearest hundredth of a percent. Example: 0.0125 would be written as 1.25% Answer = Blank 1% of cats weigh more than your catThe heights of women follow a normal distribution with a mean height of 63.7, and a standard deviation in height of 2.9 in. What height separates the shortest 5% of women from the rest. Round your result to 1 decimal place. 68.5 inches 65.4 inches None of these 58.9 inches -1.6 inches
- The amount of caffeine in a sample of five-ounce servings of brewed coffee is shown in the histogram. Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. Click the icon to view the histogram. Graph/chart Midpoint x xt Ay 30+ 2 70.5 141 24 14 92.5 1295 25- 24 114.5 2748 20- 7 136.5 955.5 14 15- 3 158.5 475.5 10- 7 ΣΤ- 50 Exf = 5615 5- Find the mean of the data set. 48.5 70.5 92.5 114.5 136.5 158.5 x = 112.3 (Round to the nearest tenth as needed.) Complete the table. Round values to the nearest tenth as needed. Midpoint x (x-x)? (x-x)?f Print Done X-X 70.5 - 41.8 1747.2 3494.5 92.5 1295 85556.3 119787.5A study group takes a practice statistics exam. They find that the group has a mean score of 80 with a Standard Deviation of 5. Lily has a z-score of 1.9 and wants to know her raw score. Calculate her score. the answer is Between 89.4 and 89.6 can you please show me the work, how do I find her score?If the grades of 100 students have mean 18 and standard deviation 4. If we subtract 3 from each student, then we divide by -2. The new standard deviation is Select one: O a. 2 O b. 4 O c. -2 O d. -4
- You want to know the percentage of utility companies that earned revenue less than 67 million dollars. If the mean revenue was 50 million dollars and the data has a standard deviation of 7 million, find the percentage. Assume that the distribution is normal. Round your answer to the nearest hundredth.Find Test Statistic, P value, and Z score.
