A group of students take a Statistics Exam where the average was M = 85 and the standard deviation was SD = 6.8. Answer the following questions regarding this distribution using your normal curve table. Depending on the problem, be sure to identify the raw scores, Z scores, what in particular you shaded when creating a curve and the final answer. What raw score is needed to be in the bottom 16%?

Q: Americans spend an average of 5 hours per day online. If the standard deviation is 33 minutes, find…

A: Given,Mean, μ = 5 hours = 5×60 = 300 minutes.Standard deviation, σ = 33 minutes.We need to find the…

Q: For the data in the following sample: 1,1,9,1 A. Find the ss, variane, and standard deviation. B.…

A: Given data: 1,1,9,1

Q: of the cholesterol levels are assumed to be abnormally high, what would be the lowest cholesterol…

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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: Suppose that the exam scores of a statistics class were normally distributed with a mean of 94 and…

A: Solution: Let X be the exam score of a statistics class. From the given information, X follows…

Q: IQ scores have a mean of 100 and a standard deviation of 15. What percentile corresponds to an IQ…

A: Given that Mean =100  Standard deviation =15  We have to the percentile  corresponding to an IQ…

Q: A psychology exam has 300 questions with each question worth 1 point. Assume that the distribution…

A: It is given that mean score is μ=165 and Standard deviation is σ=30 for a normal distribution of…

Q: A medical lab tested a sample of 8 vials of blood for acidity on the pH scale.  Use this data to…

A:

Q: This looks like another problem. Read carefully. Sergio is doing a long hike and is carefully…

A:

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A:

Q: Provide a set of 20 data points that has a mean of 20, a median of 25, an IQR of 10, and a sample…

A: Data should have mean of 20, a median of 25, an IQR of 10, and a sample standard deviation between 9…

Q: You measure the height of 10 people and come up with an average of 70 inches and a standard…

A: x=70s=4n=10 The t scores for 68 inches, t=68-xsn=68-70410=-1.581139

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 some reports, the mean and coefficient of variation are given. For instance, one report gives the…

A: given data  cv = 1.9% μ = 3.2σ = ?

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: Decide if the following statement is true or false. Explain why. It is possible to have a standard…

A: We need to decide if the given statement that " It is possible to have a standard deviation of -2…

Q: The body temperatures of adults are normally distributed with a mean of 98.6° F and a standard…

A: Percentile:The percentile is the proportion of data lying below a certain value. For example, 56…

Q: You have collected a simple random sample of 39 students. On average (the average here is measured…

A: In this case, the minimum amount spent on books is $398 and maximum amount is $804.

Q: A standardized test has a pop. mean of 152 and a standard deviation of 16. Molly scores at the 91st…

A:

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: A medical lab tested a sample of 8 vials of blood for acidity on the pH scale.  Use this data to…

A:

Q: Create your Data Set. These are your X-values: 1. Choose a number between 50 and 100. And write your…

A:

Q: On a nationwide math test, the mean was 51 and the standard deviation was 4. If Roberto scored 85,…

A: We have given the mean and standard deviation of a nationwide math test.Mean μ = 51Standard…

Q: On a nationwide math test, the mean was 72 and the standard deviation was 7. If Roberto scored 90,…

A: Given that, Mean = 72 Standard deviation = 7

Q: The mean grade for chemistry exam was 76% with a standard deviation of 6%.the mean grade for…

A:

Q: in how you determined your findings. How many children scored lower than Emily? How many children…

A: The standard normal variate of the normal distribution is continuous and follows that z~N(0,1). The…

Q: Task: Consider a population consisting of the following data: 3, 5, 7, 9. 1. Solve for the…

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Q: What would a histogram look like if the mean is 50 the median is 50 and the standard deviation is…

A: Mean is 50.Median is 50.Standard deviation is 1.6.

Q: Report anything you noticed about the way the graphs were shaped, how they were different as the…

A: Considering the Reese’s Pieces candies manufactured by Hershey are 25 candies: Physical Sample:…

Q: In a statistics class of 150 students, the mean and standard deviation of scores was 70 and 5,…

A: Given: The total number of students are N=150. The mean scores of students in a statistics class is…

Q: The distribution of the lengths of long-stemmed roses is mound-shaped and symmetric with the mean…

A: The mean is 15 and the standard deviation is 2.

Q: A student studying statistics wants to look at data for his favorite sport, American football. He…

A: It is given that that a student collect data on the lengths of 100 field goals from various games…

Q: The prices of all college textbooks follow a bell-shaped distribution with a mean of $108 and a…

A: HERE GIVEN FOR BELL SHAPED DISTRIBUTION  MEAN=$108 S.D=$21

Q: percentile rank on each exam? Percentile rank of ACT  Percentile rank of SAT  On which exam did…

A: The mean and standard deviation for the ACT are 18 and 7. Carla scored 31 on her ACT. The value of…

Q: You want to know the percentage of utility companies that earned revenue greater than 94 million…

A: Given Mean(μ)=60standard deviation(σ)=15

Q: You are told that a set of data includes one score which is 0.8.The standard deviation for the set…

A: According to the provided information. The data consist one value which is 0.8. Now, also given that…