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 less than 115.

Q: The amount of time it takes students to complete a biology exam is normally distributed with a…

A: Given that, The random variable X is the amount of time takes students to complete a biology exam It…

Q: Assume that a set of test scores is normally distributed with a mean of 110 and a standard deviation…

A: Empirical rule of probability:- Approx. 99.7% of the data lies between ± 3 SD limit of mean μ  ±3 σ…

Q: A 4 year college will accept any student ranked in the top 60% of a national exam. If the test…

A: From the given information,Mean (µ) =600Standard deviation (σ) = 100Let the test score be a x which…

Q: The distribution of grades in a final exam conforms to the normal distribution with an average of 60…

A:

Q: The weights of men in their 30s are normally distributed with a mean of 190 pounds and a standard…

A: From the provided information, Population mean (µ) = 190 pounds Population standard deviation (σ) =…

Q: The scores on a standardized test are normally distributed with a mean of 80 and standard deviation…

A:

Q: The admission committee of AUCA passes 61% of those who took the exam. If the scores follow a normal…

A: We have given that.   X~N( μ , ?^2 )   μ =350 , ? =25   Z-score =( x - μ )/?

Q: what percent of the students scored higher than 68?

A: It is given thatMean, μ = 70Standard deviation, σ = 3Z-Score, Z = ( X - μ )/σwhere, Z be the…

Q: A pediatrician claimed that the average time for a drug to take effect is. 15 minutes with a…

A:

Q: mean number of customers arriving at a restaurant during a 15-minute period is 9. Find the standard…

A: Given that :   The mean number of customers arriving at a restaurant during a 15-minute period is 9.…

Q: The scores on a standardized test are normally distributed with a mean of 95 and standard deviation…

A:

Q: A group of data has a mean of 65 with a standard deviation of 5. What z-score is possible if the…

A: According to the provided information,

Q: The weight of potato chips in a small​-size bag is stated to be 6 ounces. The amount that the…

A: It is given that the mean and standard deviation are 6.1 ounces and 0.08 ounces, respectively.By…

Q: Assume that body temperatures of healthy adults are normally distributed with a mean of 98.2 and a…

A: From the given information X follows normal distribution with mean µ = 98.2 standard deviation σ =…

Q: The distribution of raw scores on a chemistry final is approximately normal with a mean of about 50…

A: The random variable X is defined as the student will have a raw score which follows normal…

Q: The life of a semiconductor laser at a constant power is normally distributed with a mean of 7000…

A: It is given that  Mean, μ = 7000 Standard deviation, σ = 600 Z-Score, Z = ( X - μ )/σ   Note:…

Q: standford-binet iq test scores are normally distributed with a mean score of 100 and a standard…

A: standford-binet iq test scores are normally distributed with a mean score of 100 and a standard…

Q: The mean length of one-year-old spotted flounder, in millimeters, is 127 with standard deviation of…

A:

Q: The Coffee Bean and Tea Leaf morning customer load follows a normal distribution with mean 46 and…

A: Solution

Q: A soft drink machine outputs a mean of 24 ounces per cup. The machines output is normally…

A:

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 scores on a standardized test are normally distributed with a mean of 90 and standard deviation…

A:

Q: The number of cell phone minutes per month used by a collage student follows a normal distribution…

A: To solve this problem, we first need to standardize the given values using the standard normal…

Q: If the scores follow normal distribution with the mean of 84 and a standard deviation of 7, find…

A:

Q: The average age of UST employees is 34 years old. Assume the data is normally distributed. If the…

A: The average age of UST employees is 34 years old i.e. μ=34 The standard deviation is three years…

Q: The phenomenal data shows that the average of a player is 41 runs and mean score of team is 50 with…

A:

Q: Assume that people playing World of Warcraft in a week has a normal distribution with a mean of 54…

A: This question requires us to use the normal distribution to calculate the probability of a randomly…

Q: The time spent in days waiting for a heart transplant can be approximated by a normal distribution…

A: Given information- Population mean, μ = 127 days Population standard deviation, σ = 23.5 days Since…

Q: If a golfer hit drives a golf ball with a mean of 180 yards and a standard deviation of 20 yards,…

A: We have given that  A golfer hit drives a golf ball with a mean of 180 yards and a standard…

Q: A study of pregnant women found that the length of pregnancies is normally distributed with a mean…

A: Solution: Let X be the length of pregnancies. From the given information, X follows normal…

Q: are normally distributed with a mean of 100 and a standard deviation of 15. What IQ is in the 90th…

A: Kwe have to find out given probabiity..

Q: The scores on a standardized test are normally distributed with a mean of 90 and standard deviation…

A: The test score is 0.6 standard deviations above the mean is obtained below: From the given…

Q: Body temperatures of adults are normally distributed with a mean of 98.60 Fahrenheit and a standard…

A: The Z-value of a random variable X is defined as follows: Here, the mean and standard deviation of…

Q: Assume the random variable X is normally distributed with a mean of 50 and a standard deviation of…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.