The mear was 80 and the Standard deviation was 4, Kawhi scored 5, 8o his z-Score was more than one Standard deu iation below the mean True False

Q: A random sample of 80 tires showed that the mean mileage per tire was 41,700 mi, with a standard…

A: (a) A random sample of 80 tires showed that the mean mileage per tire was 41700 mi, with a standard…

Q: A lecturer noted that the grades of her students werenormally distributed with a mean of 73 and a…

A: We need to calculate Minimum score needed to make an Ahere alpha = 0.07,  from Z table we found…

Q: A professor at a local university noted that the grades of her students were normally distributed…

A: Given  X~N(mu=76, sigma^2=10^2) Note: According to Bartleby an expert can solve only one question…

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 242 cm.…

A: Thus, the standard z-score for the tallest man is 10.51.

Q: The income of a group of 10,000 persons was found to be normally distributed with mean AED 1750pm…

A: here given  mean =  1750  standard deviation  =  50  here use excel command for probability from…

Q: a department store on average, has daily sailes of $29,395.82. the sandard deviation of sales is…

A: Given that, Mean, mu= 29395.82 And standard deviation, sigma= 2000 We know that, z score is given…

Q: Do men take less time than women to get out of bed in the morning? The 42 men observed averaged 7.6…

A: Given , n1=42 , n2 =52  x¯1=7.6 , x¯2 =9 s1=2.2 , s2 =2.1 The hypothesis will be stated as below  H0…

Q: The grades on a midterm were Normally distributed with a mean of 120 and a standard deviation of 17.…

A: GivenMean(μ)=120standard deviation(σ)=17

Q: What raw score is needed to be in the bottom  28%? A group of students take a exam and the adverage…

A: Given that, For a normally distributed random variable, X with mean μ, and standard deviation σ, the…

Q: Do men take less time than women to get out of bed in the morning? The 57 men observed averaged 4.7…

A:

Q: John got 83 on a test, with a standard deviation of 10.73 and the class mean was 77.1. Paul got 88…

A: From the provided information, John got (X) 83 on a test with a standard deviation (σ) of 10.73 and…

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 233 cm.…

A:

Q: Do men take less time than women to get out of bed in the morning? The 45 men observed averaged 4.8…

A: Given that, The 45 men observed averaged 4.8 minutes to get out of bed after the alarm rang. Their…

Q: Suppose that you have a X= 75 on an exam with Ú=70. Which standard deviation would give you a better…

A: Given : Suppose that you have a X= 75 on an exam with Ú=70

Q: According to the Nielsen Company, the mean number of TV sets in a U.S. household in a recent year…

A:

Q: In a particular examination, the mean score is 82 and the standard deviation is 3.7. Wha is the Z-…

A: Given that the mean is 82 and standard deviation is 3.7. That is, μ=82σ=3.7

Q: A study at the University of Colorado at Boulder shows that running increases the percent resting…

A: Null Hypothesis: A hypothesis which is tested for plausible rejection is called the Null Hypothesis…

Q: A class midterm had an average score of 75% with a standard deviation of 4%. Based on your answer…

A: Unusual: When z-score is less than -1.5 and greater than 1.5 then the event is said to unusual. The…

Q: (c) If the standard deviation remains at 0.5 ounce, what must the mean weight be for the company to…

A: Givenstandard deviation(σ)=0.5x=13 ounces

Q: Would lun ne IS! 12. Antonio's height is 1 standard deviation below the mean for boys his age. If…

A: Antonio's height is 1 standard deviation below the mean for boys his age. The heights of boys are…

Q: Soum that the red blood cell counts of women are normally distributed with a mean of 4.577 million…

A: Solution: Let X be the red blood cell counts of women. From the given information, X follows normal…

Q: The mean test score for a history test is 63 with a standard deviation of 9. The mean test score for…

A: It is given that the mean test score and standard deviation for history test are 63 and 9, the mean…

Q: In English class the final exam grades average 78 with a stanard deviation of 12 and in a…

A: Given data,   For English exam, μ=78σ=12Score x=84   For mathematics exam, μ=72σ=15Score x=82

Q: A group of students take a exam and the adverage was m = 90 and the standard deviation was 7.8.…

A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: In the general population, the mean IQ is 100 with a standard deviation of 15. Dr. Robbins wants to…

A: From the provided information, Population mean (µ) = 100 Population standard deviation (σ) = 15

Q: A third student polled her class and wrote down the numbers from her data below population standard…

A: 6)  to find the 80% confidence interval of the mean mean = ∑xn=5723=2.48 standard deviation = 2.1

Q: The wind speeds throughout the month of April were normally distributed with a mean of 17 mph and a…

A: .

Q: Assume that the SAT test scores are normally distributed with a mean score of 1200 and a…

A:

Q: Jason's z- score in the 10-k run was -3. if the raw score standard deviation was 5, and the mean…

A:

Q: to 29-year old woman is 64.1 inches tall, with a standard deviation of 3.9 inches. Who is relatively…

A:

Q: the golf scores for a school team were normally with a mean of 68 and a standard deviation of 3. Use…

A:

Q: Suppose the weekly rent of international students in Sydney is normally distributed with a mean of…

A: Assume,  X be the random variable which represents the amount of weekly rent in dollars. μ be the…

Q: Use z scores to compare the given values.   The tallest living man at one time had a height of 243…

A: Given data μ = 173.68σ = 7.46Tallest man height is = 243Shortest man height is = 125.9

Q: John scored 60 in a quiz in Math for which the average score of the class was 50 with a standard…

A: Z score is given by where, X is score is mean  is standard deviation

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 225 cm.…

A: Normal distribution in the center is generally denser and basically less dense at the tails. There…

Q: Do men take less time than women to get out of bed in the morning? The 42 men observed averaged 7.6…

A: Given : Men  Sample size = nm = 42 Mean = xm = 7.6 Standard deviation = sm = 2.2 Women  Sample size…

Q: Assume that males have a mean hieght of 69.1 in. with a standard deviation of 2.9 in., and females…

A: Given  that  males have a mean height of 69.1 in. with a standard deviation of 2.9 in. and  female…

Q: Assume that the test scores from a college admissions test are normally distributed, with amean of…

A: Hence,the percentage of the people taking the test score between 400 and 500 is…

Q: The College Board National Office recently reported that in 2011-2012, the547,038 high school…

A: The given information is:

Q: stributed with a mean of 100 and a standard deviation of 16. Find the proportion of people in the…

A:

Q: The results of a common standa population mean is 105 and the standard deviation is 30. A subject…

A: A z-score is a numerical measurement that describes a value's relationship to the mean of a group of…

Q: Alice was told that her reading test score was one standard deviation below to me if test scores…

A: Given that, Alice was told that her reading test score was one standard deviation below to me if…

Q: The time is takes a studen to walk from the dorn to the chemistry lab follows roughly a Normal…

A: Mean(µ) = 20 Standard deviations (σ) = 3 X ~ N (µ, σ )= N ( 20, 3)

Q: It has been reported that the variance of the speeds of drivers Turnpike near Somerset, PA is 64 for…

A: From the provided information, Sample size (n) = 50 Sample standard deviation (s) = 10.5 Level of…

Q: Here * denotes the lost values. If it was known that the mean of the marks was 56 and the standard…

A: The combined mean is given by

Q: Assume that the results are normally distributed. Pedro took an exam in a class in which the mean…

A:

Q: a data set has a mean of 210 and a standard deviation of 40, what is the z- Score for a ralue of140…

A: We have given that  Mean =mu=210 , standard deviation(sigma)=40 and x=140 X~N(mu,sigma^2)…

Q: The scores for all high school seniors taking the verbal section of the Scholastic Aptitude Test…

A: Given distribution is bell shaped. In bell shaped distribution mean, median and mode are equal.…

Q: The mean daily temperature during January was -12.1 degrees Celcius with a standard deviation of 5.6…

A: