For a normally distributed random variable, the stnadard deviation is 3.7. What us the mean if 10% of the distribution is less than 31
Q: A particular fruit's weights are normally distributed, with a mean of 783 grams and a standard…
A: Given: Population mean (µ) = 783 Population standard deviation (σ) = 20 Sample size (n) = 24…
Q: A particular fruit's weights are normally distributed, with a mean of 771 grams and a standard…
A: Solution: Let X be the weight of a particular fruit. From the given information, X follows normal…
Q: A particular fruit's weights are normally distributed, with a mean of 418 grams and a standard…
A: Given that mean = 418,s.d=24,n=2, p value=0.06
Q: am 1 scores have a mean of 530 and a standard deviation of 110, while exam 2 scores have a mean ores…
A: The z score for exam 1 is:
Q: the mean for test 1 is 50. and the standard deviation is 7. then the probability that a group of 49…
A: Mean(μ)=50 standard deviation(σ)=7
Q: One of the conditions for one-sample z test is that the population standard deviation is known.…
A: It is given that the statement about to the z-test. Here need to find out the given statement is…
Q: Canadians usually spent around $940 on Christmas presents in 2005. Assume the standard deviation is…
A: Given: Mean=μ=940 and standard deviation=σ=210. Sample size=n=70.
Q: A normal population has a mean of 75 and a standard deviation of 5. You select a sample of 40.…
A: A normal population has a mean of 75 and a standard deviation of 5. You select a sample of 40.…
Q: The probability that a football game will go into overtime is 11%. In 480 randomly selected football…
A: given datap=0.11n=480here p=pobability of go into over timex= no. of games wnt to overime
Q: A particular fruit's weights are normally distributed, with a mean of 405 grams and a standard…
A: The normal distribution is the most useful theoretical distribution for continuous variable. For…
Q: A particular fruit's weights are normally distributed, with a mean of 724 grams and a standard…
A: Given Mean=724 Standard deviation=9 n=18
Q: CNNBC recently reported that the mean annual cost of auto insurance is 1002 dollars. Assume the…
A:
Q: A particular fruit's weights are normally distributed, with a mean of 256 grams and a standard…
A: given data normal distribution μ = 256σ = 29n = 8P(x¯>z) = 0.17
Q: The grades on a test follow a normal distribution with a mean mark of 70 and a standard deviation of…
A:
Q: Determine if the statement is true or false. In a normal distribution, about 95% of all data values…
A: we know the empirical rules…
Q: CNNBC recently reported that the mean annual cost of auto insurance is 977 dollars. Assume the…
A: Let X be the random variable from normal distribution with mean (μ) = 977 dollars, standard…
Q: A particular fruit's weights are normally distributed, with a mean of 302 grams and a standard…
A: From the provided information, Mean (µ) = 302 grams Standard deviation (σ) = 16 grams X~N (302, 16)
Q: A positively skewed population has a mean of ? = 100 and a standard deviation of ? = 15. a. What is…
A: Mean of , μ = 100 Standard deviation of , σ = 15 What is the mean of the distribution of sample…
Q: Suppose the mean starting salary for nurses is $66,613 nationally. The standard deviation is…
A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts. In case…
Q: A particular fruit's weights are normally distributed, with a mean of 421 grams and a standard…
A: Given Population Mean, μ=421 Population standard deviation, σ=20 Sample size, n=3
Q: CNNBC recently reported that the mean annual cost of auto insurance is 999 dollars. Assume the…
A: Hello! As you have posted more than 3 sub-parts, we are answering the first 3 sub-parts. In case…
Q: A particular fruit's weights are normally distributed, with a mean of 208 grams and a standard…
A: We have to find mean value for given data .
Q: A particular fruit's weights are normally distributed, with a mean of 465 grams and a standard…
A: Solution: Let X be the weight of a particular fruit. From the given information, X follows normal…
Q: A normal population has a mean of 37 and a standard deviation of 8 A.What proportion of the…
A: Given Population mean μ=37, standard deviations σ=8
Q: The percent fo Coloradans that own a Subaru is 56%. If you were to take a random sample of size 70,…
A: We have given that, Let X be the random variable from binomial distribution with probability (p) =…
Q: A particular fruit's weights are normally distributed, with a mean of 431 grams and a standard…
A: Let X be the mean weight in grams. X is normally distributed with mean, μ=431 grams and standard…
Q: A particular fruit's weights are normally distributed, with a mean of 678 grams and a standard…
A: Normal distribution is a continuous probability distribution which has many real life applications.…
Q: According to a recent study, 22% of people like sour candy. Suppose we obtain a random sample of 114…
A: Given: p=0.22 n=114
Q: A particular fruit's weights are normally distributed, with a mean of 648 grams and a standard…
A: The population mean and standard deviation are 648 grams and 16 grams respectively. It is given that…
Q: If you pick 25 fruits at random, then 9% of the time, their mean weight will be greater than how…
A:
Q: A particular fruit's weights are normally distributed with a mean of 598 grams and a standard…
A: Given mean= 598, standard deviations=34, n=4
Q: A particular fruit's weights are normally distributed, with a mean of 284 grams and a standard…
A: From the provided information, Mean (µ) = 284 grams Standard deviation (σ) = 32 grams X~N (284, 32)
Q: Suppose that people's heights (in centimeters) are normally distributed, with a mean of 170 and a…
A: GivenMean(μ)=170standard devaition(σ)=5No.of people(N)=80
Q: A grocer finds that the cantaloupes in his store have weights with mean 0.7 kg and standard…
A: Given, Mean weight of cantaloupes is 700 gm. Standard deviation is 53 gm
Q: A particular fruit's weights are normally distributed, with a mean of 422 grams and a standard…
A: The following information has been given: The population mean is μ=422. The population standard…
For a
Step by step
Solved in 2 steps with 1 images
- Which statement about the normal distribution is false? Approximately 68 % of the data lie within 1 standard deviation of the mean. Approximately 99.7% of the data lie within 3 standard deviation of the mean. None of these is true. Approximately 95% of the data lie within 2 standard deviation of the mean. SAMSUNG C Oll % & ★A particular fruit's weights are normally distributed, with a mean of 442 grams and a standard deviation of 35 grams. If you pick 9 fruits at random, then 10% of the time, their mean weight will be greater than how many grams? Give your answer to the nearest gram.A particular fruit's weights are normally distributed, with a mean of 419 grams and a standard deviation of 7 grams.If you pick 3 fruits at random, then 9% of the time, their mean weight will be greater than how many grams?Give your answer to the nearest gram.
- 1.Assume that the time a student stays in school is normally distributed with a mean of 5 hours and a standard deviation of 0.5 hours. Every day, Ian stays in school for 5.5 hours. What proportion of students stay fewer than 5.5 hours? 2.For a normally distributed random variable, the standard deviation is 3.7. What is the mean if 10% of the distribution is less than 31? 3.Scores of an achievement test shows that it follows a normal distribution. Its mean is 78 with a standard deviation of 8. Find the interval wherein the middle 80% of the scores lie. 4. Assume that family incomes are normally distributed with mean 30,000php and a standard deviation of 10,000php. If the poverty level is 10,000php, find the percentage of the population that lies in poverty. 5.In 2018, the braking distance of Toyota Camry cars on a wet surface follows a normal distribution. Its mean is 122 feet with a standard deviation of 20 feet. What is the probability that a randomly selected Toyota Camry will have a…A particular fruit's weights are normally distributed, with a mean of 613 grams and a standard deviation of 19 grams.If you pick 20 fruits at random, then 11% of the time, their mean weight will be greater than how many grams?Give your answer to the nearest gram.The Boeing 157-200 ER aircraft carries 200 passengers and has doors with a height of 72 inches. Male heights are normally distributed with a mean of 67.4 inches and a standard deviation of 3.8 inches. 1. If a male passenger is selected at random, find the probability that he can pass through the door without leaning over. Enter your answer to four decimal places. 2. If half of the 200 passengers are men, find the probability that the average height of the 100 men is less than 72 inches. Enter your answer to four decimal places.
- A particular fruit's weights are normally distributed, with a mean of 271 grams and a standard deviation of 28 grams.If you pick 3 fruits at random, then 7% of the time, their mean weight will be greater than how many grams?Give your answer to the nearest gram.2. For a normally distributed random variable, the standard deviation is 3.7. What is the mean if 10% of the distribution is less than 31? 3. Scores of an achievement test show that it follows a normal distribution. Its mean is 78 with a standard deviation of 8. Find the interval wherein the middle 80% of the scores lie.The cost of textbooks is normally distributed with a mean of $208. You do not know the population standard deviation, but you estimate the sample standard deviation to be $45.What is the probability that from a sample of 14 textbooks, their average cost will be between $226 and $262? (Report answer accurate to three decimal places.)
- The cost of textbooks is normally distributed with a mean of $222. You do not know the population standard deviation, but you know the sample standard deviation is $46.What is the probability that from a sample of 15 textbooks, their average cost will be less than $230? (Report answer accurate to three decimal places.)Imagine the mean women’s foot size is a 7.5 with standard deviations of 1.5. a. What percentage of women have a foot size larger than 10? b. If you select 30 people at random is it likely that any of them will have a foot size larger than 10? If so, how many?What is the standard deviation if the variance is 6.25? A, 2.5 B, 2.8 C. 3.5 D. 3.8
