Find the probability that an observation taken from a standard normal population will be more than -2.16.
Q: Assume that adults have IQ scores that are normally distributed with a mean of 96.8 and a standard…
A: Let "X" be the IQ score of the adults.
Q: Assume that adults have IQ scores that are normally distributed with a mean of 105 and a standard…
A:
Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…
A: From the provided information,Mean (µ) = 162000Standard deviation (σ) = 36000Sample size (n) = 58
Q: The IQ scores of adults are normally distributed with a mean of 100 and a standard deviation of 15.…
A:
Q: A Cuckoo Maran hen lays a mean 300 eggs per year with a standard deviation of 12.7 eggs. The…
A:
Q: Working in the garden pulling weeds/planting flowers burns an average of 200 calories per hour. If…
A: It is given that Mean, μ = 200 Standard deviation, σ = 9 Z-Score, Z = ( X - μ )/σ
Q: What is the probability that your score on an exam will be less than a 60, if the mean on the exam…
A: We have to find probability that your score on an exam will be less than a 60....
Q: Bryse is 27 years old. Based on a normal distribution with mean 47.8 years and standard deviation…
A: GivenBryse is 27 years oldx=27Mean(μ)=47.8standard deviation(σ)=12.6
Q: What is the probability of a sample mean being between z-values of -1.58 and 0.79?
A: We have to find the probability of a sample mean being between z-values of -1.58 and 0.79?
Q: Assume that blood pressure readings are normally distributed with a mean of 123 and a population…
A: Solution: Let X be the blood pressure reading. From the given information, X follows normal…
Q: Suppose IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What…
A:
Q: Suppose IQ scores are normally distribut a mean of 100 and a standard deviation What is the…
A: Solution: Let X be the IQ scores are normally distributed with mean 100 and standard deviation 15.…
Q: Find the probability that a randomly selected adult has an IQ greater than 129.9.
A: Let X denote the IQ scores. Given that X follows N(mean = 98.6, SD = 18.5), then Z = (X - mean)/SD…
Q: The average GPA at a college is 2.79 with a standard deviation of 0.6. Find the probability that 7…
A: Let X, be the random variable of average GPA at a college follows Normal distribution with a mean…
Q: The time between aircraft landing at a local airport has an exponential distribution with a mean of…
A: Let X=The time between aircraft landing at a local airport Given that X follows an exponential…
Q: The average score of 100 students taking a statistics final was 78 with a standard deviation of 7.…
A: It is given that, the sample size is n=100. The population mean is μ=78. The population standard…
Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…
A: We are given,μ = 196σ = 22n = 60
Q: Assume that adults have IQ scores that are normally distributed with a mean of 95.9 and a standard…
A: Given: Mean μ = 95.9 Standard deviation σ = 15.6 Formula Used: Z-score: Z = X-μσ
Q: Suppose the probability a patient will recover from a disease following medication is 0.7. In a…
A: Given : the probability a patient will recover from a disease following medication is 0.7. In a…
Q: About 78% of all female heart transplant patients will survive for at least 3 years. Ninety…
A: From the given information, the sample size is 90 and the proportion is 78%. The mean of the sample…
Q: A final exam in science 160 has a mean of 73 with a standard deviation of 7.8. If 25 students are…
A: Given information- Population mean, µ = 73 Population standard deviation, σ = 7.8 Sample size, n =…
Q: Assume that adults have IQ scores that are normally distributed with a mean of 104.7 and a standard…
A: It is given that the IQ score follows normal distribution with mean 104.7 and standard deviation…
Q: Suppose IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What…
A: Given that : Mean =100 Standard Deviation =15 We have to find the probability a random person has an…
Q: The manufacturer of cans of salmon that are supposed to have a net weight of 6 ounces tells you that…
A:
Q: A normal population had a mean of 70 and a standard deviation of 12. You select a random sample of…
A: μ = 70σ = 12n = 9P(x¯>73) = ?
Q: Assume that adults have IQ scores that are normally distributed with a mean of 103.6 and a standard…
A: Given that adults have IQ scores that are normally distributed with, Mean = 103.6 Standard deviation…
Q: he manufacturer of cans of salmon that are supposed to have a net weight of 6 ounces tells you that…
A:
Q: If the normal operating life of a car is considered to be 150,000 miles, with a standard deviation…
A: The probability that a car will last 200,000 miles is calculated as follows:
Q: normal population had a mean of 70 and a standard deviation of 12. You select a random sample of 9.…
A: given data normal distributionμ = 70σ = 12n = 9 P(x¯<66) = ?
Q: Too much cholesterol in the blood increases the risk of heart disease. The cholesterol levels of…
A: We have to find given probability.
Q: if Z is a standard normal variable, find the probabilitythe probability that z lies between -1.10…
A: We have given that Z is standard normal variable. We have to find probability that- P (-1.10 < Z…
Q: will apply for graduate school. If the population standard deviation is 10 and the sample size is…
A: Given that Population proportion p=25%=0.25 Sample size n =100
Q: Assume that adults have IQ scores that are normally distributed with a mean of 98.1 and a standard…
A: Answer:- Given, IQ scores(X) are normally distributed with mean, μ = 98.1 and standard deviation, σ…
Q: Find the probability that a single randomly selected salary that doesn't exceed 181000 dollars.…
A: The random variable X is defined as the salary for graduates which follows normal distribution with…
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- Find the probability for the sample proportion of men who experience sleep apnea to be less than 18%?IQ scores are normally distributed with a mean of 100 and standard deviation of 15. Findthe probability of having an IQ between 130 and 150The time taken to complete an exam folows a normal probability distribution with a mean of 60 minutes and standard deviation of 10 minutes. What is the probability that a randomly chosen student will complete the exam in 50 minutes or longer?
- Research has shown that IQ scores form a normal distribution with a u = 100 and o = 15. We also know that individuals with IQs that are above 140 are classified in the genius category. Therefore, what proportion of the population consists of geniuses?The probability that a z-score will be between -1.4 and -1.04 is?Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability of randomly selected adult has an IQ score between 89 and 111.
- A population has a mean of 75 and a standard deviation of 15. You randomly sample 9 from the population. What is the likelihood that the sample mean will fall between 70 and 80?Assume that adults have IQ scores that are normally distributed with a mean of 101.3 and a standard deviation of 20.2. Find the probability that a randomly selected adult has an IQ greater than 136.4Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability of randomly selected adult has an IQ score less than 115.
- The quality control manager at a computer manufacturing company believes that the mean life of a computer is eighty one months with avariance of sixty four. If he is correct, what is the probability that the mean of a sample of sixty computers would differ from the population mean by less than two point 94 months.In a Normal distribution, the average is 45 and standard deviation is 12. What is the probability that the outcome is MORE than 40?On Mary’s FACEBOOK page, there is a 42% chance that one of her friends will write on her wall. If she has 2400 “hits” on her page, can the probability that less than 1071 people write on her wall be modelled with a normal approximation? Explain/justify your answer.